How to Choose a Scale for Postage

Posted by AWS Team on Sep 6th 2026

Choosing the right scale for postage starts with a simple question:

What is the heaviest fully packed package you realistically expect to ship?

Then ask:

How much measurement detail do you actually need?

Those two answers will determine most of your decision.

For lightweight sellers, a scale with approximately 13 lb capacity may be enough.

For a broader home-business or eCommerce workflow:

55 lb × 0.1 oz

is a highly practical range.

For larger cartons and growing shipping operations:

110 lb × 0.1 oz

provides substantially more capacity.

The best postage scale is not automatically the one with the highest capacity or the most decimal places. It should balance:

Capacity
Readability
Accuracy
Repeatability
Platform size
Tare
Calibration
Display placement
Weighing units
Power options
Your actual package range

This guide explains how to choose the right combination.

Quick Guide: What Postage Scale Do You Need?

Shipping Application	Capacity to Consider	Useful Readability
Letters and very light parcels	Low-capacity scale	Fine ounce/gram increments
Jewelry and accessories	5–13 lb	0.1 oz or finer
Beauty products	13–25 lb	0.1 oz
Apparel orders	13–25 lb	0.1 oz
Small eCommerce parcels	25–55 lb	0.1 oz
General small-business shipping	55 lb	0.1 oz
Larger eCommerce cartons	55–110 lb	0.1 oz
Wholesale packages	110 lb+	Appropriate shipping resolution
Heavy commercial shipments	Higher-capacity scale	Appropriate to workflow

For many small businesses:

55 lb × 0.1 oz

offers an excellent balance between useful capacity and shipping-oriented readability.

Step 1: Start With Your Heaviest Fully Packed Shipment

Do not choose capacity based on the weight of your individual products.

Choose based on:

the heaviest realistic completed order.

Suppose your heaviest product weighs:

8 lb

That does not necessarily mean a 13 lb scale is enough.

A customer could order:

4 products × 8 lb = 32 lb

Box = 2 lb

Packing material = 1 lb

Complete shipment:

35 lb

A 13 lb scale would be unusable.

A 55 lb scale could handle the shipment.

Step 2: Include Packaging in Your Calculation

The scale needs to support everything you actually send.

That can include:

Product
Box
Mailer
Bubble wrap
Paper
Padding
Inserts
Manuals
Promotional material
Tape
Shipping label

Suppose:

Product = 15.0 oz

Mailer = 1.1 oz

Padding = 0.5 oz

Insert = 0.2 oz

Tape and label = 0.1 oz

Actual completed package:

16.9 oz

For postage purposes, weigh the finished shipment rather than only the item inside.

USPS recommends having a kitchen or postage scale available when preparing applicable packages from home, making actual packaged weight an important part of the shipping process. USPS: How to Ship a Package

Step 3: Decide Whether 13 lb Capacity Is Enough

A scale around 13 lb can work well if you consistently ship lightweight products such as:

Jewelry
Accessories
Cosmetics
Small electronics
Replacement parts
Collectibles
Lightweight clothing
Books
Small household products

Suppose your normal package range is:

4 oz to 7 lb

A 13 lb scale provides useful headroom.

But if you occasionally send:

Multi-item orders
Wholesale orders
Large boxes

you may outgrow it quickly.

Step 4: Decide Whether 55 lb Capacity Is Better

For many eCommerce businesses, 55 lb is a strong general-purpose capacity.

It can accommodate:

Lightweight mailers
Standard parcels
Multi-item orders
Medium cartons
Larger product bundles
Returns
Small wholesale shipments

The AWS PS-25 Digital Package Postage Scale provides:

55 lb capacity × 0.1 oz readability

making this configuration particularly useful for general home and small-business shipping.

Step 5: Know When You Need 110 lb

If you regularly ship:

Large cartons
Wholesale orders
Multiple heavy products
Home goods
Equipment
Bulk inventory

a 55 lb scale may be too restrictive.

For example:

Products = 63 lb

Box and packing material = 4 lb

Total shipment:

67 lb

A 55 lb scale cannot measure it.

The AWS SE-50 Digital Shipping Scale provides:

110 lb capacity × 0.1 oz readability

which gives significantly more room for heavier shipping workflows.

Step 6: Leave Capacity Headroom

Do not choose a scale whose maximum capacity is almost identical to your normal package weight.

Suppose:

Scale capacity = 55 lb

Typical large package = 52 lb

Remaining capacity:

3 lb

That gives you little flexibility for:

Larger orders
Heavier cartons
Extra packing
Product bundles

If you routinely approach 50 lb, a 110 lb model may be a better long-term choice.

Step 7: Understand Readability

Readability describes the smallest increment shown on the scale.

A postage scale might display weight in:

Pounds
Ounces
Pounds and ounces
Grams
Kilograms

For example, a scale with:

0.1 oz readability

can display:

2 lb 4.1 oz

2 lb 4.2 oz

2 lb 4.3 oz

rather than only rounding to a much larger increment.

Step 8: Is 0.1 oz Readability Good for Postage?

For many home and small-business shipping workflows:

yes.

0.1 oz readability is useful for:

Lightweight parcels
Small products
Mailers
eCommerce orders
Packages near weight boundaries

It provides useful measurement detail without requiring the extreme resolution associated with laboratory or jewelry scales.

Step 9: Do You Need Gram Measurements?

Gram mode can be helpful for:

Lightweight parcels
International documentation
Product-weight records
Metric shipping workflows
Comparing packaging materials

For example:

Package A = 425 g

Package B = 438 g

That difference may be useful when comparing packaging options.

However, for a 50 lb carton, extremely fine gram-level detail is generally less important than adequate capacity and reliable readings.

Step 10: Do You Need 0.1g or 0.01g?

For ordinary postage:

usually not.

A 0.01g scale is ideal for applications such as:

Jewelry
Pigments
Precision ingredients
Small components

But shipping a package weighing several pounds does not normally require hundredth-of-a-gram resolution.

For postage, prioritize:

appropriate capacity + useful ounce readability + repeatability

instead.

Step 11: Do Not Confuse Readability With Accuracy

Suppose a scale displays:

5 lb 8.2 oz

That tells you something about its readability.

It does not automatically guarantee that the true mass differs by no more than 0.1 oz.

Accuracy and readability are separate concepts.

When choosing a postage scale, also consider:

Repeatability
Calibration
Platform stability
Proper load placement
Manufacturer specifications

NIST's Calibration of Mass Standards provides broader technical context for mass calibration and traceability.

Step 12: Look for Repeatable Measurements

For shipping, repeatability is highly useful.

Suppose you weigh the same sealed package three times.

Good consistency might look like:

8 lb 5.2 oz

8 lb 5.3 oz

Now compare:

8 lb 5.2 oz

8 lb 11.4 oz

7 lb 15.9 oz

That second pattern deserves investigation.

AWS explains several common causes in Why Does My Digital Scale Give Different Readings?.

Possible causes include:

Unstable surface
Package touching another object
Improper load placement
Weak batteries
Platform interference
Calibration issues

Step 13: Evaluate Platform Size

Capacity alone does not tell you whether a scale is practical.

Suppose a scale supports:

110 lb

but your carton is so large that it:

Covers the display
Touches the workbench
Leans against a wall
Cannot sit securely

You still have a poor weighing setup.

Before purchasing, compare:

package dimensions with platform dimensions.

Step 14: Make Sure the Package Is Fully Supported

Your parcel should sit securely on the weighing platform.

Avoid letting the package:

Lean against a wall
Rest on a shelf
Touch another box
Sit partly on the floor
Receive support from the packing table

External support can alter the amount of weight transferred to the scale.

Step 15: Decide Whether You Need a Remote Display

A large box can completely cover an integrated display.

This makes a:

remote display

especially useful.

A remote display allows the box to remain on the weighing platform while the measurement remains visible.

This is particularly helpful for:

Large cartons
Wholesale packages
Wide boxes
Fulfillment stations

The AWS SE-50 uses a remote display, making it well suited to larger shipping packages.

Step 16: Consider Awkward Package Shapes

Not every shipment is a normal rectangular box.

You may ship:

Mailing tubes
Large envelopes
Rolled posters
Long narrow packages
Irregular products

The platform should support these securely without the package touching another surface.

Some postage-scale designs provide specialized platform features to make awkward items easier to weigh.

Step 17: Decide Whether You Need Tare

Tare resets the displayed value after an object is placed on the scale.

Example:

Empty tote = 2.5 lb

Place it on the scale.

Press tare.

Display:

0 lb

Add merchandise.

The display now shows only the merchandise weight.

Tare can be useful for:

Packing
Inventory
Product batching
Warehouse preparation

Step 18: Remember That Tare Does Not Increase Capacity

Suppose:

Scale capacity = 55 lb

Container = 10 lb

Press tare.

Display:

0 lb

The scale is still physically supporting:

10 lb

You therefore do not have another full 55 lb available.

Tare affects the display.

It does not change the scale's physical capacity.

Step 19: Do Not Tare Away Packaging When Calculating Postage

When preparing the final shipping label, you generally want:

the weight of the complete finished shipment.

That includes:

Product
Box
Mailer
Protective material
Inserts
Tape
Label

If the carrier transports it, it contributes to actual weight.

Step 20: Check Calibration Features

Before purchasing a scale, ask:

Can it be calibrated?
What calibration weight does it require?
Is calibration user-accessible?
Is the calibration weight included?
Are instructions available?

AWS provides general guidance in How to Calibrate a Digital Scale for Accurate Results.

Always follow the exact instructions for your specific model.

Step 21: Never Assume Capacity Equals Calibration Weight

55 lb scale

does not automatically require a:

55 lb calibration weight.

The required reference mass depends on the model.

Always check the manufacturer's instructions.

Step 22: Use an Appropriate Calibration Reference

When reliable calibration matters, do not assume objects such as:

Dumbbells
Water bottles
Packages
Books
Household items

are suitable calibration references.

NIST publishes Calibration Procedures for Weights and Measures Laboratories, which provides broader technical context for proper mass calibration.

For a normal shipping scale, use the calibration method and reference specified by its manufacturer.

Step 23: Use a Stable Packing Surface

Place the scale on a:

Hard
Flat
Stable
Rigid

surface.

Avoid:

Carpet
Foam
Flexible mats
Unstable shelving
Wobbly tables

A dedicated packing bench is ideal.

Step 24: Center Packages Appropriately

Place the package securely on the platform.

Avoid:

Excessive edge loading
Leaning cartons
Boxes touching surrounding objects
Loose cords interfering with the platform

Consistent positioning helps produce more stable measurements.

Step 25: Choose Useful Weighing Units

For U.S. postage workflows, useful units can include:

lb:oz

as well as:

A lb:oz mode is especially convenient because a lightweight package may display directly as:

3 lb 5.4 oz

without requiring manual conversion.

Step 26: Consider Battery vs. Continuous Power

Battery Power

Useful for:

Mobile shipping stations
Home businesses
Temporary workspaces
Occasional shipping

Continuous Power

Useful for:

Daily fulfillment
Warehouses
High-volume eCommerce
Permanent packing stations

Depending on the model, continuous power may use:

AC
USB
Another wired connection

Step 27: Think About Auto-Off

Auto-off can extend battery life.

But it may become annoying if you are weighing dozens of packages in sequence.

For high-volume fulfillment, a model with convenient continuous power may provide a smoother workflow.

Step 28: Understand Actual Weight vs. Billable Weight

Your scale measures:

actual package weight.

But actual weight is not always the only number used for shipping charges.

UPS explains that dimensional weight reflects the amount of space a package occupies relative to actual weight and may apply to domestic and international package services. UPS Shipping Dimensions and Weight

Therefore:

an accurate scale does not necessarily tell you the final billable weight.

Step 29: Understand Dimensional Weight

Suppose:

Package A weighs 8 lb

and is compact.

Package B also weighs 8 lb

but is extremely large.

They have the same actual weight but consume very different amounts of transportation space.

FedEx explains that shipping charges may be based on dimensional weight or actual weight, whichever is greater for applicable shipments. FedEx: What Is Dimensional Weight?

That means your shipping station needs more than a scale.

Step 30: Pair Your Scale With a Tape Measure

A good eCommerce shipping station should generally include:

digital postage scale + measuring tape + shipping software

The scale determines:

actual weight

The tape measure determines:

length × width × height

The carrier or shipping platform then applies its current pricing rules.

Step 31: Choose a Scale for USPS Shipping

If you primarily ship through USPS, consider:

Your normal package range
Your heaviest finished package
Ounce readability
Platform size
Display visibility

For small home shipments, a lightweight scale may be adequate.

For a growing eCommerce business:

55 lb

provides significantly more flexibility.

Remember that carrier limits and service requirements are separate from the scale's capacity.

Step 32: Choose a Scale for UPS Shipping

UPS states that packages can generally weigh up to 150 lb, while noting that specific shipments may have different size and weight limits. UPS Shipping Dimensions and Weight

That does not mean every UPS seller needs a 150 lb scale.

Choose based on your actual package range.

For example:

Maximum package = 25 lb

A 55 lb scale gives generous room.

Maximum package = 85 lb

A 110 lb scale makes much more sense.

Step 33: Choose a Scale for FedEx Shipping

For FedEx packages, you need accurate actual weight while also accounting for package dimensions when applicable.

A seller whose normal packages range from:

1–40 lb

may find a 55 lb scale highly practical.

A business whose packages frequently exceed:

55 lb

should move to a higher-capacity model.

Step 34: Choose a Scale for eCommerce

Online sellers should consider combined orders.

Suppose your catalog includes:

Product A = 3 lb

Product B = 5 lb

Product C = 7 lb

A customer buys:

2 × Product A = 6 lb

2 × Product B = 10 lb

2 × Product C = 14 lb

Products total:

30 lb

Packaging adds:

3 lb

Finished shipment:

33 lb

A 13 lb scale is no longer useful even though every individual product weighs less than 7 lb.

Step 35: Choose a Scale for Etsy Shipping

Many Etsy sellers ship:

Jewelry
Candles
Crafts
Art
Clothing
Ceramics
Handmade home products

If everything stays lightweight:

13 lb

may be enough.

For candles, ceramics, bundled products or larger décor:

25–55 lb

provides more flexibility.

Step 36: Choose a Scale for eBay Shipping

eBay inventories can include almost anything:

Trading cards
Collectibles
Electronics
Tools
Auto parts
Appliances
Home products

Because order weight varies significantly, general resellers may benefit from:

55–110 lb capacity

rather than a very low-capacity postal scale.

Step 37: Choose a Scale for a Small Business

For many small businesses, the ideal scale is one that covers:

today's packages plus realistic future growth.

Consider whether you may introduce:

Larger SKUs
Product bundles
Wholesale
Subscription boxes
Larger packaging
Multi-item orders

A 55 lb scale may provide plenty of flexibility for many businesses.

A 110 lb model makes more sense if heavy cartons are part of the normal workflow.

Step 38: Choose a Scale for Lightweight Products

If you sell:

Jewelry
Small cosmetics
Accessories
Small electronics
Collectibles

your key priorities may be:

Fine ounce readability
Compact design
Easy storage
Simple display

You may not need 110 lb capacity.

Buying excessive capacity offers little benefit if every shipment weighs under 3 lb.

Step 39: Choose a Scale for Large Boxes

Large-box shipping changes your priorities.

Look for:

Higher capacity
Stable platform
Remote display
Adequate support
Appropriate shipping readability

For large cartons:

platform usability may matter as much as raw capacity.

Step 40: Compare 55 lb vs. 110 lb

Choose 55 lb If:

Most packages are below 30–40 lb.
You want a compact general-purpose shipping scale.
You ship typical eCommerce parcels.
Heavy cartons are rare.

Choose 110 lb If:

Packages regularly exceed 40–50 lb.
You ship wholesale orders.
You handle larger products.
You want greater capacity headroom.
Larger cartons frequently cover integrated displays.

A Practical 55 lb AWS Postage Scale

For many home businesses and eCommerce operations, the AWS PS-25 provides a practical balance.

Its:

55 lb × 0.1 oz

configuration can handle:

Mailers
Small parcels
Medium cartons
Multi-item orders
General eCommerce shipments

This makes it a strong option when you need substantially more capacity than a lightweight bench scale without moving into a much larger shipping setup.

A Practical 110 lb AWS Shipping Scale

For heavier packages, the AWS SE-50 provides:

110 lb × 0.1 oz

The greater capacity is useful for:

Larger cartons
Wholesale shipments
Bulk orders
Heavier merchandise

Its remote display is also particularly useful when a large box would otherwise block the readout.

When You Need Even More Capacity

If your business routinely handles packages above 110 lb, choose an appropriately rated higher-capacity scale rather than trying to split the shipment into multiple weighing steps.

You can compare additional options in the AWS Shipping Scales collection.

Match capacity to the complete shipment.

Example 1: Small Beauty Order

Products = 1 lb 4.2 oz

Box = 3.5 oz

Packing = 1.0 oz

Complete package:

1 lb 8.7 oz

A postage scale with 0.1 oz readability is appropriate.

Example 2: Apparel Order

Products = 6.5 lb

Box = 1 lb

Finished shipment:

7.5 lb

A 13 lb scale can accommodate it.

Example 3: Large Multi-Item Order

Products = 41 lb

Packaging = 4 lb

Total:

45 lb

A 55 lb scale can handle it.

However, if orders frequently get heavier, a 110 lb model provides more headroom.

Example 4: Heavy Shipment

Products = 74 lb

Box and packaging = 5 lb

Total:

79 lb

A 55 lb scale cannot measure this shipment.

A 110 lb scale can.

Example 5: Lightweight Oversized Package

Actual weight:

8 lb

But the carton is unusually large.

Your scale accurately tells you:

8 lb actual weight

but that does not necessarily mean 8 lb will be the carrier's billable weight.

Package dimensions may also affect the rate.

How an Accurate Scale Can Support Shipping Cost Control

Accurate package information can help businesses:

Enter weights correctly
Compare carrier services
Compare packaging choices
Reduce guessing
Identify unnecessarily heavy packaging

AWS discusses these applications further in How to Reduce Shipping Costs Using a Digital Scale.

The scale itself does not lower rates.

It provides better data for shipping decisions.

Common Mistakes When Choosing a Postage Scale

Choosing Based Only on Price

A cheap scale is not useful if it cannot support your packages.

Buying Too Little Capacity

Consider combined orders and packaging.

Buying Excessive Capacity

A 300 lb scale may be unnecessary if every package weighs under 5 lb.

Choosing Based on Decimal Places

Extreme precision is usually unnecessary for postage.

Confusing Readability With Accuracy

They are different characteristics.

Forgetting Packaging Weight

The completed parcel matters.

Ignoring Capacity Headroom

Avoid operating constantly near the maximum.

Ignoring Platform Size

A large box needs proper physical support.

Allowing a Package to Touch Another Surface

This can affect measurements.

Ignoring Display Location

Large boxes may hide integrated screens.

Ignoring Tare

It can be useful in packing workflows.

Assuming Tare Restores Capacity

It does not.

Taring Away Packaging Before Buying Postage

Your final shipment weight should include its packaging.

Ignoring Calibration

Follow model-specific procedures.

Guessing the Calibration Weight

Use the mass specified by the manufacturer.

Ignoring Dimensional Weight

A scale only measures actual mass.

Assuming Scale Capacity Equals Carrier Limits

Carrier/service restrictions are separate.

Ignoring Future Growth

A scale that barely works today may quickly become inadequate.

Postage Scale Selection Checklist

Before buying, ask:

What products do I ship?
What is my lightest parcel?
What is my heaviest individual product?
What is my heaviest realistic combined order?
How much does packaging add?
What is my heaviest completed package?
Do I need 13 lb capacity?
Do I need 25 lb?
Do I need 55 lb?
Do I need 110 lb?
Do I need more than 110 lb?
How much capacity headroom will remain?
Is 0.1 oz readability sufficient?
Do I need grams?
Do I need lb:oz mode?
What accuracy specifications are provided?
Are readings repeatable?
Is the platform large enough?
Will my packages sit securely?
Will a large box cover the display?
Would a remote display help?
Do I ship envelopes or mailing tubes?
Does the scale offer tare?
Can the scale be calibrated?
What calibration weight is required?
Is the calibration reference included?
Do I want battery power?
Do I want continuous power?
Is my packing table stable?
Do I measure package dimensions too?
Do I understand dimensional weight?
Will this scale still work if my business grows?

Frequently Asked Questions

How do I choose a scale for postage?

Start with:

your heaviest realistic fully packed shipment.

Then choose sufficient capacity with useful readability and enough headroom.

Also consider:

Repeatability
Platform size
Tare
Calibration
Display placement
Power

What capacity postage scale should I buy?

For lightweight shipping:

13–25 lb

may be sufficient.

For broad eCommerce use:

55 lb

is highly practical.

For larger packages:

110 lb or more

may be appropriate.

Is a 55 lb postage scale enough?

For many home businesses and eCommerce sellers, yes.

If your packages routinely approach 50 lb, consider 110 lb instead.

Should I buy a 110 lb shipping scale?

Choose 110 lb if:

Your packages exceed 55 lb.
You frequently ship heavier cartons.
You want substantially more headroom.
You expect order sizes to grow.

What resolution should a postage scale have?

For many parcel-shipping applications:

0.1 oz readability

is useful.

Extremely fine 0.01g or milligram resolution is generally unnecessary.

Do I need 0.01g for postage?

Normally no.

That level of readability is much better suited to small precision-measurement applications.

Does packaging count toward postage weight?

Yes.

The fully prepared package includes:

Merchandise
Box
Mailer
Padding
Inserts
Tape
Label

Should I weigh the package before or after packing?

For shipping purposes:

after packing.

You want the actual weight of the finished shipment.

Does tare increase capacity?

No.

Tare changes the display but does not increase the scale's physical capacity.

Is platform size important?

Yes.

A scale may have enough capacity but still be difficult to use if your box cannot sit securely on its platform.

Should I get a remote display?

A remote display is useful for medium and large cartons that might obscure an integrated screen.

Is lb:oz mode useful?

Yes.

For U.S. shipping workflows, lb:oz can make package readings easier to enter directly.

Do I need gram mode?

Gram mode can be useful for lightweight products, international workflows and product records.

Should a postage scale be calibratable?

A clear calibration procedure is a valuable feature when you rely on the scale regularly.

Follow the exact instructions for your model.

Can I calibrate a shipping scale with any known object?

For reliable calibration, use the reference mass specified by the manufacturer rather than assuming a household object's nominal weight is appropriate.

Can a shipping scale calculate postage?

A normal scale measures actual weight.

Shipping rates can also depend on:

Dimensions
Service
Destination
Carrier
Dimensional weight
Surcharges

Your carrier or shipping platform performs the final rate calculation.

Does a scale calculate dimensional weight?

No.

You need the package's:

length × width × height

to evaluate dimensional weight.

What postage scale should an eCommerce seller use?

For many eCommerce businesses:

55–110 lb capacity with approximately 0.1 oz readability

is a strong starting range.

What scale should I choose for large packages?

Prioritize:

Adequate capacity
Platform support
Remote display
Repeatable readings
Suitable readability

For many larger small-business shipments, 110 lb provides a useful range.

Final Verdict: How to Choose a Scale for Postage

To choose the right scale for postage, begin with:

your heaviest realistic completed shipment.

Then determine how much measurement detail you need.

For lightweight sellers:

13–25 lb

may provide enough capacity.

For many home businesses and eCommerce sellers:

55 lb × 0.1 oz

is an excellent general-purpose configuration.

For larger packages and expanding fulfillment operations:

110 lb × 0.1 oz

provides considerably more flexibility.

Before buying, compare:

capacity, readability, accuracy specifications, repeatability, tare, calibration, platform size, display placement, weighing units and power options.

And remember that the scale solves only one part of the shipping equation.

It measures:

actual package weight.

Your final shipping charge may also depend on:

package dimensions, dimensional weight, destination, service and current carrier rules.

For many small businesses, the most practical choice is therefore:

a 55–110 lb shipping scale with approximately 0.1 oz readability

paired with:

accurate package measurements and current carrier shipping software.

Choose enough capacity for your largest completed order, leave reasonable headroom, and avoid paying for extreme precision that ordinary postage does not require.