Postage Calculator — Royal Mail & Courier Costs
Estimate Royal Mail postage costs by weight and parcel size for your craft items.
Adds approx. £1.50 surcharge
How We Calculate This
The calculator checks your item dimensions and weight against Royal Mail size categories: Letter, Large Letter, Small Parcel and Medium Parcel.
It then applies the approximate postage rate for the selected service class and adds a tracking surcharge if selected.
Actual prices may vary. Always check the Royal Mail website for current rates before purchasing postage.
Frequently Asked Questions
Related Calculators
Cost Per Item Calculator
Calculate the total cost to make each item including materials, time and overheads.
Selling Price Calculator
Work out the right selling price based on costs, desired margin and platform fees.
Material Cost Calculator
Track and total material costs across multiple supplies for a project.
Time Calculator
Calculate your effective hourly rate from time spent and items produced.
Profit Margin Calculator
Calculate gross and net profit margins on your handmade products.
Last updated: 2025-02-20
All calculations are estimates. Always verify quantities before purchasing materials.