About TabUtils

TabUtils is a collection of free online tools built by a web developer who got tired of utility sites that upload your data, hide the tool under ten ads, or stop working without an account. Every tool here runs entirely in your browser using standard web APIs. Nothing you paste, type or calculate is sent to a server.

What you will find

• Developer utilities: JSON formatting, encoding and decoding, hashing, regex testing.
• Text tools: word and character counting, case conversion, password generation.
• Finance calculators: loan payments, compound interest, percentages.
• Converters for units and colors.

How the site is funded

The site is free and supported by advertising. Ads are served by Google AdSense and are kept out of the tool area so they never get in the way of your work. See the privacy policy for how advertising cookies are handled.

Accuracy

Calculators use standard formulas that are documented on each tool page. They are intended for estimates and education. For financial, legal or medical decisions, confirm results with a qualified professional.

Contact

Found a bug or want a new tool? Reach out via the contact page.