Key takeaways
- Place the scale on a flat, firm surface. Soft surfaces can distort readings.
- Zero the scale before each weighing and avoid touching the platform.
- Do not exceed capacity, and avoid dropping heavy items on the platform.
- Keep the scale away from drafts, vibrations and heat sources.
- For legal-for-trade needs, look for scales the maker certifies as such in your region, and follow local weights and measures rules.
- Carriers publish their own weight and dimension rules and may re-weigh parcels. Weigh with packaging included.
A compact digital postal scale in the 5 to 10 pound range, such as the Dymo M5 or M10, suits most home-based sellers who ship small parcels and letters, while a 25 to 50 pound platform scale suits anyone shipping heavier boxes, and a USB scale that connects to shipping software suits high-volume sellers. Capacity, readability, platform size and power source matter more than extras.
Our top picks
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Postage Scales at a Glance
| Type | Best for | Key traits makers describe | Limits |
|---|---|---|---|
| Dymo M5 / M10 / M25 | Letters, small parcels, home business | Model numbers indicate pound capacity; digital display and tare function | Smaller platform; confirm size for large boxes |
| Pelouze postal scales | Office and mailroom use | Long-running postal brand, multiple capacities | Check display and power details for each model |
| Greater Goods digital scale | Light parcels, kitchen and craft dual-use | Compact design, battery powered | Capacity is limited; not made only for postage |
| Ohaus or Brecknell platform scale | Heavy parcels and trade use | Larger platform, higher capacity, durable build | Heavier, higher cost |
| USB shipping scale | High-volume sellers | Connects to a computer and shipping software | Needs compatible software and a computer |
| Mechanical spring scale | Backup or no-power use | No batteries needed | Lower accuracy and harder to read |
Key Features to Compare
Capacity
Capacity is the maximum weight the scale can read. Pick one that covers your heaviest typical parcel with some headroom. Scales named with a number, such as the Dymo M5, M10 and M25, indicate the pound capacity in the model name. Overloading a scale can damage the load cell and the maker typically states a maximum limit.
Readability and Accuracy
Readability is the smallest weight step the display shows, such as a tenth of an ounce or a gram. Postal rates are set in ounces and pounds, so look for ounce readability for light mail and pound readability for heavy parcels. Accuracy claims are listed by makers and can vary, so look for a stated tolerance and consider calibrating with a known weight.
Platform Size and Shape
A platform too small for your parcels leads to tipping and misreads. Check that your largest box fits, or that you can place it centred. Some scales have a pull-out display that keeps readouts visible when a large box sits on top.
Tare and Hold Functions
Tare lets you zero out a container or box weight, so only the contents are shown. A hold function freezes the reading after you remove the item, helpful for parcels that cover the display. Most mid-range models include both.
Power
Many scales run on AAA or AA batteries, and some offer an AC adaptor. USB models draw power from the computer. Look for auto shut-off to conserve batteries, and be aware that low batteries can cause inconsistent readings.
Units and Display
Switchable units such as pounds, ounces, grams and kilograms help international sellers. A backlit display is easier to read in dim rooms, and a large display helps when the parcel sits near the front.
Software Connectivity
USB scales connect to a computer and can send weights directly to shipping or label software. The software must list support for your scale, so check compatibility before buying.
Choosing by Budget Tier
Budget
Budget scales are compact digital units with limited capacity, often 5 pounds or less. They fit occasional letters and light packages for hobby sellers. Expect basic displays, smaller platforms and a shorter service life.
Mid-range
Mid-range includes Dymo’s M-series, Pelouze models and similar brands. They offer larger platforms, tare, hold, unit switching, and capacities from about 5 pounds up to 25 pounds in the Dymo line. Reviewers commonly point to this tier for small online shops and offices.
Premium
Premium choices include higher-capacity platform scales from makers such as Ohaus and Brecknell, with metal platforms, USB or serial output and better stated accuracy. They suit heavier items and shipping stations where the scale is used all day. Some are rated as legal for trade, which matters if you sell goods by weight.
Fit and Setup Notes
- Place the scale on a flat, firm surface. Soft surfaces can distort readings.
- Zero the scale before each weighing and avoid touching the platform.
- Do not exceed capacity, and avoid dropping heavy items on the platform.
- Keep the scale away from drafts, vibrations and heat sources.
- For legal-for-trade needs, look for scales the maker certifies as such in your region, and follow local weights and measures rules.
- Carriers publish their own weight and dimension rules and may re-weigh parcels. Weigh with packaging included.
Calibration and Care
Many digital scales can be calibrated with a known test weight, following the manual. Test the scale from time to time using a known weight such as a sealed item with a printed net weight, then recalibrate if the readout drifts. Keep the platform clean, replace weak batteries early, and store the scale flat. Avoid wiping with strong liquids that can seep into the load cell.
Pick X If You Want…
| Pick this | If you want… | Watch out for |
|---|---|---|
| Dymo M5 or M10 | A well-known home-business scale for small parcels | Platform size and capacity limit |
| Dymo M25 or similar | Heavier parcels in a compact format | Slightly less fine readability |
| Pelouze postal scale | Office or mailroom use | Compare power and display features |
| Greater Goods digital scale | A light-duty scale for letters and crafts | Limited capacity |
| Ohaus or Brecknell platform scale | Heavy, daily shipping | Size, weight and cost |
| USB scale with software | High-volume label printing | Software compatibility |
Alternatives Worth Considering
- Kitchen scale: fine for light items under a few pounds, but the platform and capacity may be small and it may not display ounces to postal precision.
- Bathroom scale: can weigh heavy boxes by subtraction but lacks the readability for postage rates.
- Carrier counter or print-and-ship store: an option if you ship rarely and do not want to buy equipment.
Frequently Asked Questions
What capacity postage scale do I need?
Pick one that covers your heaviest typical parcel with some margin. A 5 or 10 pound model suits most letters and small boxes. If you ship items near 20 pounds or more, choose a higher-capacity platform scale.
How accurate does a postage scale need to be?
Carriers charge by weight bands, so small errors rarely change the rate, but errors near a band boundary can. Choose a scale with ounce readability or better and check it against a known weight. Calibrate according to the manual if readings drift.
Can I use a kitchen scale for postage?
Yes for light items, provided it reads in ounces or grams with enough capacity. Its platform may be small and the unit may not suit heavy parcels. A dedicated postal scale is easier for repeated shipping.
Do postage scales need batteries?
Many use AAA or AA batteries and some include an AC adaptor. USB scales draw power from the computer. Replace weak batteries promptly because low power can cause unstable readings.
What does tare mean on a scale?
Tare zeroes the display with an empty box or container on the platform so only the added contents are weighed. It is useful when packing items in different boxes. Always clear the tare when you remove the container.
Do I need a scale that connects to a computer?
Only if you print many labels and want weights transferred automatically. A standalone digital scale is enough for occasional shipping. Check that your shipping software lists support for the model.
FAQ
What capacity postage scale do I need?
How accurate does a postage scale need to be?
Can I use a kitchen scale for postage?
Do postage scales need batteries?
What does tare mean on a scale?
Do I need a scale that connects to a computer?
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