Parcel and air
Shipping Girth Calculator
Find the longest side, girth, and combined length plus girth for any box orientation.
Enter shipment details
Planning result
Enter valid values, then calculate.
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Results are estimates. Verify changing carrier, classification, and equipment rules before shipping.
How this calculator works
This calculator automatically treats the longest side as length and wraps girth around the other two dimensions.
Girth = 2 x (width + height). Combined size = longest side + girth.
Worked example
For a 30 x 20 x 10 inch package, girth is 60 inches and combined length plus girth is 90 inches.
What to measure
Use the outside packaged dimensions as the shipment will be tendered. Include pallets, skids, cartons, wrapping, overhang, and projections. Weigh the complete packaged unit, not only its contents.
Assumptions and limitations
Service limits and nonstandard fees can differ. Verify the current carrier guide and the exact product used.
Rules and sources used
Frequently asked questions
Is this result exact?
Geometry and unit conversions are calculated directly from your entries. Class, billing, and packing results are planning estimates because official rules, equipment, and real loading conditions can vary.
Does Freight Totals save my shipment?
No. Calculator inputs remain in your browser and are not sent to Freight Totals analytics.
Can I use metric and US units?
Tools show the unit system that fits the workflow, and the density and volume tools support both systems. Equivalent secondary results are shown where useful.