01 · Calculator

Every package. Its own comparison.

Calculate dimensional weight in kg from cm measurements. Compare each package with actual weight, choose rounding and inspect an explainable total.

Dimensional weight calculator

Use cm and kg, up to three decimal places with a decimal point. Dimensions 0.001–1000 cm, weight 0.001–10000 kg. These are tool bounds, not shipping eligibility limits.

1. State the assumptions

Divisor (cm³/kg)Dimension roundingSelected weight rounding

5000 is a starting assumption, not a value for every service. Enter the integer divisor 1–100000 that you want to test.

I understand that results depend on these assumptions; carrier rules need separate confirmation.

2. Enter each package group

One row is only for packages with identical dimensions and actual weight. Maximum 20 rows, 1–999 packages per row.

Group 1

Length (cm)Width (cm)Height (cm)Actual weight (kg)Identical count

Measuring tape and parcel on a workbench

Check units first

Enter dimensions in cm and weight in kg. This tool does not automatically convert inches or pounds. Mixed units produce incorrect results.

Keep assumptions with results

The result lists the selected divisor and rounding. Editing an input invalidates the old result so it cannot be mistaken for the current calculation.

Read each group

Quantity multiplies the selected weight after each package’s comparison and rounding. The number of groups is not the number of packages.

Next step

An assumption still unclear?

Start with a question about measurement, divisors or rounding. Confirm the actual service policy before making a shipping decision.

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References & scope

Official references reviewed on 4 October 2026. Policies vary by service. Examples and images are illustrative; scale markings in images are not inputs for the worked examples.