Free tools
6 small tools that work out a number or build a code. No account, nothing sent anywhere — they run in your browser.
- Margin calculatorWhat is left after the goods, the delivery, the payment fee and the parcels that come back.
- A/B test calculatorWhether the difference between two versions is real, or just the week you happened to measure.
- SKU generatorBuild product codes that stay readable when you have two thousand of them.
- EAN-13 check digitWork out the last digit of a barcode, or check whether one you were given is valid.
- UTM link builderTag a link so you can tell later where a visitor came from.
- URL slug generatorTurn a product name into the address it will live at.