I use percentage calculators quite a lot. And we all know that the best one out there is one that looks exactly as it did when it launched in 2007.

So I decided to build one that looks more like 2025. A clean one.

Some extra features were also added:

- I removed the calculate button. Now it happens automatically, 0.75 seconds to be more precise. And that is because it takes me about 1s to get from the input to result and copy it.

- Result fields have built in copy functionality. Just click or tap the field and the result is in your clipboard.

- Dark mode support

- Theme display based on os theme

- A cookie to remember the theme for 1 year (the only cookie actually)

I tried to keep it clean for fast loading, so there are no libraries or google analytics. Just a small script for a CloudFlare worker that tracks how people use it.