About ToolNook

ToolNook is a small, independently-run collection of free everyday calculators and utilities. The goal is simple: when you need to do a one-off bit of math or text manipulation, you should get an answer in seconds — not be funneled through a sign-up flow or a wall of unrelated content.

How it works

Every tool on the site runs entirely in your browser. Your inputs never leave your device. We don't store your numbers, your passwords, your text, or your dates.

How we keep it free

ToolNook is supported by ads served through Google AdSense. Ads make it possible to keep every tool free for everyone, with no account and no "premium" tier. If you'd like to support the site, allow-listing it in your ad blocker is the most direct way to help.

Suggestions and bug reports

Found a calculation that looks wrong, or have an idea for a tool we should add? Get in touch via the contact page.