How dimensional weight works
Carriers may charge based on package size, not just actual weight.
Learn more →Free shipping tool
Shipping Weight & Cost Calculator
Calculate dimensional weight, estimate billable weight, and understand your shipping costs in seconds.
- Accurate calculations
- Supports metric & imperial
- No signup required
Package dimensions
Enter the outer dimensions of your packed parcel and its actual weight.
cm
cm
cm
kg
Common starting points: 5000 for metric and 139 for imperial. Carrier rules vary.
cm³/kg
Estimate shipping costs
Use your known shipping rate to estimate the cost of sending this parcel.
Estimates are based on values you enter. ShipCalc does not provide official carrier quotes.
USD
USD
USD
Cost breakdown
Estimated shipping-related expenses from your inputs.
- Base shipping charge
- $0.00
- Additional charges
- $0.00
- Packaging cost
- $0.00
Total estimated cost
$0.00
This is a user-input estimate, not an official carrier quote.
Shipping guides
How billable weight is calculated
The higher of actual weight and dimensional weight is used as the billable weight.
Learn more →How to estimate shipping costs
Use your shipping rate, additional charges, and packaging cost to get an estimate.
Learn more →Limitations
Actual carrier charges may vary based on service, route, surcharges, and other factors.
Learn more →Frequently Asked Questions
View all FAQs →ShipCalc supports metric units (centimetres and kilograms) and imperial units (inches and pounds). You can switch systems at any time. When all values are filled, ShipCalc converts your inputs and recalculates results so unit systems are not mixed incorrectly.