Parcel limits

Package Girth Calculator

Calculate girth and combined length plus girth for parcel size checks.

Live calculator

The longest entered side is treated as length, regardless of field order.

Measure the package

Side 1cmWidthcmHeightcmUnit

Your estimate

Girth140 cm

Length + girth220 cm

Longest side80 cm

Planning estimate only. Confirm measurements, rounding, service rules, payload, and rates with the carrier.

Load a worked example

Each link fills the calculator with the measurements shown. Change a value to see what changes. Reference examples are covered by automated calculation checks; they are not physical shipping tests.

Length plus girth in inches

48 × 20 × 16 in

Calculation: 48 + 2 × 20 + 2 × 16

Expected: 120 in

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Girth and length plus girth are different results

Use the longest side as length. Girth goes around the other two sides: 2 × width + 2 × height. The combined measurement adds the longest side once. Keep all three dimensions in the same unit.

For a box measuring 48 × 20 × 16 inches, girth is 72 inches and length plus girth is 120 inches. Compare the combined figure only with a limit that explicitly uses length plus girth; a longest-side limit is a different check.

This calculator measures the package. It does not select a carrier service or certify that the package is accepted. Check the current service limits, weight and any oversize conditions separately.

How it works

A clear answer from the numbers you already have.

Carriers often express oversize rules as length plus girth. Identify the longest side as length; the distance around the two smaller sides is the girth.

FormulaGirth = 2 × width + 2 × height; combined size = length + girth

How to use this calculator

1
Use the longest side as package length.
2
Measure the other two sides at their widest points.
3
Compare the combined result with your carrier's current service limit.

What to check before booking

The result is a planning estimate, not a freight quote or load-safety approval. Measure the finished package, confirm the correct carrier service and divisor, and apply the rounding method in your current contract. For pallets and containers, also verify maximum payload, door clearance, stacking strength, load restraint, and local transport rules.

Equipment specifications and tariff rules can change. Cargoivo keeps common presets visible while letting the carrier's own documentation remain the final authority.

Calculator behavior is checked with repeatable examples documented in How We Test and the Cargoivo Lab.

Learn the method

Guides for this calculation

All shipping guides →

Packaging

How to Measure a Box for Shipping Correctly

Measure external length, width, height and weight in a way that supports CBM, DIM-weight and girth calculations.

2 min read →Packaging

Package Girth and Length Plus Girth Explained

Understand the geometry behind carrier girth limits and calculate the combined size of a parcel.

2 min read →

Frequently asked