Parcel calculator

Dimensional Weight Calculator with FedEx, UPS, DHL & USPS Divisors

Calculate dimensional and chargeable weight with planning presets for FedEx, UPS, DHL, and USPS, or enter your own divisor and rounding rule for a contracted service.

CostFree

AccountNot required

ResultUpdates live

Rules reviewedAugust 2026

Prefilled worked example

50 × 40 × 30 cm parcel at a 5,000 divisor

Compare the parcel's actual weight with dimensional weight before you accept a carrier quote or choose packaging.

Dimensional weight = (length × width × height) ÷ divisor

Run the example ↓

Your inputs

Live result

Carrier / rate preset

Length

Width

Height

Actual weight / parcel

Add parcel count, divisor or roundingOptional

Number of identical parcels

DIM divisor

5,000 cm³/kg

Chargeable-weight rounding

DIM-weight decision flow

Measure, divide, compare, then round

FedEx, UPS, DHL and USPS public guidance reviewed August 6, 2026

01Outer dimensions
Measure the finished parcel at its widest points
02Volume
Length × width × height
03Divisor
Use the service and rate-card rule that actually applies
04DIM weight
Package volume ÷ divisor
05Compare
Use the greater of dimensional and actual weight
06Round
Apply the carrier billing increment per package

Use this when

Questions this estimate can answer

You need a quick FedEx, UPS, DHL or USPS divisor comparison.
You want to see whether cube or scale weight controls the billable basis.
You are checking a finished outside package, not the product alone.

Not for

Checks you still need to make

A binding negotiated rate, accessorial fee or service-eligibility decision.
Irregular freight that needs carrier measurement or dimensional inspection.
Replacing the divisor and rounding rule shown on your current rate card.

Need the repeatable version?

Carry this result into the $19 operations workbook.

Batch calculations, quote comparisons, landed cost, pallet planning, and margin sheets stay connected in one editable Excel file.

Preview the workbook ↗

Method & limits

How this estimate works

FreightKit keeps the working visible so you can sense-check the answer before using it in a decision.

Dimensional weight = (length × width × height) ÷ divisor

Carriers use different divisors by service, account, and destination. Confirm the divisor and rounding rules on your rate card before quoting.

Explore the complete Dimensional weight reference ↗

Primary referencesFedEx dimensional weight guidance ↗UPS dimensional weight and rate-type divisors ↗DHL volumetric weight guidance ↗USPS dimensional weight example ↗

This calculator is a planning aid, not a carrier quotation, engineering assessment, or professional advice. Verify critical figures against current supplier and carrier documentation.

Worked example

50 × 40 × 30 cm parcel at a 5,000 divisor

Volume: 50 × 40 × 30 = 60,000 cm³.
Dimensional weight: 60,000 ÷ 5,000 = 12 kg.
Compare with 7 kg actual weight, then apply the selected billing increment per parcel.

ResultThe planning chargeable basis is 12 kg per parcel before any service-specific measurement rule or surcharge.

Avoid these errors

Common mistakes that change the answer

Mixing centimetre/kilogram and inch/pound divisors.
Using product dimensions instead of the finished outside package.
Rounding only the shipment total when the carrier bills each parcel.
Treating a public preset as the rule in a negotiated contract.

A calculator can expose the arithmetic; the applicable carrier rate card, handling standard, or freight quotation still controls the real transaction.

Free to embed

Put this calculator on your site.

Paste one iframe into a logistics article, supplier portal, or internal knowledge base. The calculator stays hosted and updated by FreightKit.

<iframe src="https://shipmathlab.com/embed/dimensional-weight-calculator" title="Dimensional Weight Calculator with FedEx, UPS, DHL & USPS Divisors" width="100%" height="820" loading="lazy" style="border:0"></iframe>

Formula source on GitHub ↗

Use the number well

7 minA practical dimensional-weight packaging audit ↗

Find cartons that are quietly increasing parcel charges, then test changes without weakening the pack.

8 minDimensional-weight divisors for FedEx, UPS, DHL, and USPS ↗

Compare common parcel DIM factors without treating a public rule as a substitute for your service contract.

7 minDimensional-weight rounding: worked parcel examples ↗

See why measuring and rounding at the correct step can change billed weight across a multi-parcel shipment.

8 minActual weight vs dimensional weight: which one controls the parcel charge? ↗

Compare scale weight and package cube correctly, then identify the packaging change that can actually reduce billable weight.

Keep calculating