ShippingMath
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Straightforward terms

Useful estimates, checked decisions.

ShippingMath helps you inspect shipping math. Your carrier agreement remains the final source for charges and service rules.

Using the tools

You may use the calculators and local CSV audit for personal or business planning. Do not use the service to break laws, disrupt the site, or attempt unauthorized access.

Estimates, not carrier quotes

Results depend on the measurements, divisor, rounding method and costs you enter. Carrier rules vary by service, country and contract and may change. Confirm important decisions with the current carrier documentation or your negotiated agreement.

Your data

You are responsible for the data you enter and for keeping customer information confidential. The free calculator is designed to process package and CSV data locally in your browser.

Availability

The service is provided as available and may change while we improve calculation coverage. If you spot a calculation issue, please report the carrier, service, country and a public source without sharing customer data.