Shipping Cost Estimator

Estimate shipping costs for USPS, UPS, and FedEx based on package dimensions and weight. Calculates dimensional weight, compares domestic and international rates, finds the cheapest option, and includes insurance cost estimates.

Package Details

Shipping Zone

Package Dimensions

Length

Width

Height

Package Weight

Add Shipping Insurance

How Shipping Cost Is Calculated

Dimensional weight = (Length x Width x Height) / 139 (domestic divisor)
Billable weight = the greater of actual weight or dimensional weight
Carriers charge based on billable weight to account for large, lightweight packages
Rates shown are estimates based on 2024 published rates. Actual rates may vary by account, origin/destination ZIP, and surcharges.

How to Use Shipping Cost Estimator

1Enter your package dimensions (length, width, height).
2Enter the package weight and select units.
3Choose domestic or international shipping.
4Compare rates across USPS, UPS, and FedEx to find the best option.

Frequently Asked Questions

What is dimensional weight?▾

Dimensional weight (DIM weight) is calculated as Length x Width x Height divided by a divisor (139 for domestic, 166 for international). Carriers charge based on the greater of actual weight or DIM weight.

Which carrier is cheapest for shipping?▾

It depends on package size and weight. USPS is often cheapest for small, light packages under 1 lb. UPS and FedEx Ground are competitive for heavier packages. This calculator compares all three.

Are these shipping rates exact?▾

These are estimates based on standard published rates. Actual costs may vary based on your account discounts, surcharges, fuel adjustments, and specific origin/destination. Use carrier websites for exact quotes.

About Shipping Cost Estimator

NexTool's Shipping Cost Estimator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.