Cookies
Updated on 22 Oct 2026
goodcalcs sets no cookies of its own. It keeps a few settings in your browser’s local storage, which never leaves your device.
Local storage we use
| Name | What it keeps | How long |
|---|---|---|
calc:… | Your last inputs on each calculator | Until you clear it |
mynumbers | My numbers | Until you clear it |
country | The country you picked | Until you clear it |
theme | Light, dark or system | Until you clear it |
journey:… | Journey steps you have opened | Until you clear it |
Ad cookies
Pages that show Google ads load Google’s ad code, which may set cookies to show and measure ads. In the UK, EU and other places that require it, you are asked first, and you can say no and still use every calculator.
Turning them off
Clear this site’s data in your browser settings to remove everything above. Your calculators will start from their examples again.