ToolFesto LogoToolFesto.
Explore
14 Production-Ready Utility Tools

Free online tools for everyday tasks.

A premium suite of calculators, converters, and generators. No tracking cookies, no paywalls, 100% executed in your browser.

Daily Utilities

Online Ruler

Use our free, accurate online ruler to measure objects in inches and cm directly on your screen. Calibrate screen for actual size measurements in mm, cm, or inches.

Fast, 0KB APILaunch Tool →
Daily Utilities

Age Calculator

Calculate your exact age in years, months, weeks, days, hours, and seconds. Find out the countdown to your next birthday.

Fast, 0KB APILaunch Tool →
Finance & Math

EMI Calculator

Calculate monthly home loan, car loan, or personal loan EMIs. Get a complete amortization breakdown and principal vs interest split.

Fast, 0KB APILaunch Tool →
Health & Fitness

BMI Calculator

Calculate your Body Mass Index (BMI) and find out if you are within a healthy weight range. Supports metric and imperial units.

Fast, 0KB APILaunch Tool →
Finance & Math

Percentage Calculator

Calculate percentages easily with 4 common percentage formulas. Great for discounts, tips, growth rates, and math tasks.

Fast, 0KB APILaunch Tool →
Finance & Math

GST Calculator

Calculate Goods and Services Tax (GST) easily. Compute GST inclusive and exclusive prices along with CGST and SGST breakdowns.

Fast, 0KB APILaunch Tool →
Converters

Unit Converter

Convert between different units of length, weight, area, volume, and temperature in real-time. Full conversion tables included.

Fast, 0KB APILaunch Tool →
Daily Utilities

Password Generator

Generate secure, random passwords client-side to protect your accounts. Customize length, symbols, numbers, and strength indicators.

Fast, 0KB APILaunch Tool →
Design & Graphics

QR Code Generator

Use our free QR code generator with no sign up required. Create custom QR codes for URLs, text, or Wi-Fi, customize colors, and download them instantly with no expiration.

Fast, 0KB APILaunch Tool →
Text & Content

JSON Formatter

Format, validate, beautify, and minify JSON text client-side. Find exact line syntax errors instantly with detailed logs.

Fast, 0KB APILaunch Tool →
Text & Content

Text Case Converter

Convert text case instantly between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and more.

Fast, 0KB APILaunch Tool →
Text & Content

Word Counter

Free online word counter to track characters, words, sentences, lines, reading time, and top keyword frequencies in real-time.

Fast, 0KB APILaunch Tool →
Design & Graphics

Image Compressor

Compress PNG, JPEG, and WEBP images offline. Drag and drop to compress and convert images in your browser without uploading.

Fast, 0KB APILaunch Tool →
Design & Graphics

Color Converter

Convert colors between HEX, RGB, HSL, and CMYK formats. Built-in WCAG contrast checker and custom color palette generator.

Fast, 0KB APILaunch Tool →

Frequently Asked Questions.

Everything you need to know about the ToolFesto utility platform.

ToolFesto is a fast, free, and privacy-first online tools platform providing everyday utilities like calculators, converters, formatting tools, and builders. It is designed to help you solve small tasks instantly without setting up accounts or signing up.

Yes, 100%. All processing runs client-side in your web browser. No files, passwords, or numbers are ever uploaded to our servers. Your data stays entirely in your browser.

Yes. Because all tool logic executes entirely inside your browser using standard HTML5/JS APIs, you can continue to use all loaded tools even without an active internet connection.

ToolFesto is built using Astro, a modern web framework that delivers zero client-side framework overhead. The JavaScript for each tool is only downloaded when you open that specific page, keeping initial loads incredibly lightweight.

We are constantly expanding our collection of tools. Feel free to contact us or suggest new feature categories. All tools we build are free and will remain free for everyone.