CartonMetricPlan a package
Size thresholds

Length plus girth calculator

The longest side is length. Girth is twice the sum of the other two sides. See all three values before checking a service limit.

Transparent formulaInputs stay on-deviceVerify before shipping
Package size

Calculate length, girth and combined size.

The longest side becomes length; the other two form the girth calculation.

01Finished package
0 saved on this device
02Planning result
Length + girth58 in

Longest side + twice each remaining side

Length18 in
Girth40 in
Check the exact service limit; a combined measurement can trigger a fee, oversized price or ineligibility.
Calculated on this device. Inputs are not sent to analytics.

Measure the extreme points

Use the finished package after sealing. Handles, bulges and irregular ends can change the dimensions a carrier records.

Thresholds depend on service

A combined measurement can trigger a surcharge, oversized price or ineligibility. This calculator does not replace the selected service guide.