Shipping & logistics
Volumetric shipping weight
Compare package actual weight with dimensional weight.
Calculators / Shipping & logistics / Shipping box girth
Shipping box girth calculator
Calculate a rectangular parcel’s girth and length-plus-girth measurement.
On this page
Box girth100cm
Length plus girth150cm
Box volume30,000cm³
Calculator controls
How to calculate
Calculate a rectangular parcel’s girth and length-plus-girth measurement.
Box girth =
2*(width+height) cmLength plus girth =
length+2*(width+height) cmBox volume =
length*width*height cm³Worked example
- Longest side (cm): 50
- Second side (cm): 30
- Third side (cm): 20
- Box girth: 100 cm
- Length plus girth: 150 cm
- Box volume: 30,000 cm³
Assumptions and limits
The length must be the longest measured outside side. Carrier rules, rounding, bulges and service limits differ; this is geometry, not a shipping acceptance guarantee.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Calculate a rectangular parcel’s girth and length-plus-girth measurement. Trace the perimeter around the two shorter sides, then add the longest side once.
When this tool is useful
Trace the perimeter around the two shorter sides, then add the longest side once.
Understanding your inputs
| Input | Example |
|---|---|
Longest side (cm) length | 50 |
Second side (cm) width | 30 |
Third side (cm) height | 20 |
Frequently asked questions
What assumptions should I check?
The length must be the longest measured outside side. Carrier rules, rounding, bulges and service limits differ; this is geometry, not a shipping acceptance guarantee.
How can I check the result?
Start with the labelled example. Keep units consistent, calculate without intermediate rounding and change one input at a time. The diagram explains the model; the result table supplies the numerical answer.