Craft Maths Calculators
Business calculators for pricing, profit margins, Etsy fees, market stalls and postage costs.
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.
Market Stall Calculator
Work out break-even and profit targets for craft market stalls and fairs.
Etsy Fee Calculator
Calculate Etsy listing, transaction and payment processing fees on your sales.
Postage Calculator
Estimate Royal Mail and courier postage costs by weight and parcel size.
8 free calculators in Craft Maths
Pricing Your Handmade Products for UK Craft Markets and Online Sales
One of the biggest challenges UK craft sellers face is pricing their work fairly. Many makers undervalue their time and forget to account for overheads like craft fair pitch fees, packaging, and platform charges. Our cost per item calculator helps you build a true cost figure that includes materials, your hourly rate, and fixed overheads. From there, the selling price calculator applies your target profit margin so you are not selling at a loss — something that is surprisingly common among new sellers at local craft fairs and Christmas markets.
If you sell on Etsy, understanding fees is essential. Etsy charges a listing fee, a transaction fee as a percentage of the sale price (including postage), and payment processing fees that vary by country. For UK sellers, VAT on Etsy fees adds another layer. Our Etsy fee calculator breaks all of this down so you can see your actual take-home amount before you set prices. Pair it with the profit margin calculator to make sure each product line is genuinely profitable after all deductions.
Selling at UK craft fairs — from village hall pop-ups to large events like the Handmade Festival at the NEC or the Country Living Fair — means factoring in stall fees that can range from 20 pounds to over 200 pounds per day. Our market stall calculator helps you work out your break-even point: how many items you need to sell just to cover the pitch cost, travel, and display materials. Meanwhile, the postage calculator estimates Royal Mail and courier costs by weight and parcel size, which is vital if you offer online ordering alongside your market stall.