Open & Free

Tools
That
Work

90+ dev tools and financial calculators. Runs entirely in your browser—your data never touches our servers.

90+

Tools

30+

Countries

100%

Client-side

0

Data collected

utensil.dev

Developer
Essentials

JSON Formatter

Format, validate & convert

Regex Tester

Test patterns live

Base64 Tools

Encode & decode

UUID Generator

Generate v1, v4, v7

JWT Decoder

Decode & verify tokens

API Builder

Build & test requests

utensil.pro/finance

Financial
Calculators

Mortgage

Calculate payments

Compound Interest

Project growth

Retirement

Plan your future

Tax Calculator

Estimate taxes

Loan Calculator

Any loan type

Budget Planner

Track expenses

Why Utensil?

Tools That
Respect You

Your Data Stays Here

Everything runs in your browser. We can't see what you type because it never leaves your machine.

Actually Fast

Results update as you type. Once loaded, it even works offline.

30+ Countries

Tax brackets, pension ages, and currency formatting for wherever you are.

Start Using
Free Tools
Today

Pick a tool. Get your answer. That's it. Works on any device, saves nothing, tracks nothing.