Free Online Tools
Fast, private utilities that run entirely in your browser. No sign-up, no downloads, no tracking — just tools that work.
Our Tools
Unit Converter
Convert length, weight, temperature, volume, and speed instantly. Metric, imperial, and US customary units.
Convert units →QR Code Generator
Create QR codes from any text or URL in seconds, then download them as PNG images — free forever.
Generate QR code →Password Generator
Generate strong, random passwords with a live strength meter. One click to copy — nothing is stored.
Generate password →Word Counter
Count words, characters, sentences, and paragraphs live as you type, with reading and speaking time estimates.
Count words →JSON Formatter
Validate, pretty-print, and minify JSON with clear error messages and one-click copy.
Format JSON →Base64 Encoder
Encode text to Base64 or decode it back, with full Unicode and emoji support.
Encode Base64 →URL Encoder
Percent-encode URLs for links and APIs, or decode them back to readable text.
Encode URL →Color Converter
Convert colors between HEX, RGB, and HSL with a live preview and color picker.
Convert colors →BMI Calculator
Calculate your Body Mass Index in metric or imperial units and see your weight category.
Calculate BMI →Age Calculator
Your exact age in years, months, and days, plus total days lived and a birthday countdown.
Calculate age →Loan Calculator
Monthly payment, total interest, and total cost for any loan, with a yearly payoff breakdown.
Calculate loan →Percentage Calculator
X% of Y, X is what percent of Y, and percentage increase or decrease — with live results.
Calculate percent →Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, or snake_case.
Convert case →Simple tools, zero hassle
Geneva Tools is a collection of free online utilities designed to do one thing well. Need to convert miles to kilometers, pounds to kilograms, or Fahrenheit to Celsius? Our unit converter handles length, weight, temperature, volume, and speed with instant results. Sharing a link or Wi-Fi details? The QR code generator turns any text or URL into a scannable, downloadable image. And when you need a secure credential, the password generator creates cryptographically random passwords with an at-a-glance strength meter.
Newer additions cover everyday text, data, and math tasks: a word counter with reading-time estimates, a JSON formatter and validator, Base64 and URL encoders, a HEX/RGB/HSL color converter, and BMI, age, loan, and percentage calculators — plus a case converter for headlines and code. Every tool on this site runs 100% in your browser using JavaScript — nothing is uploaded to a server, nothing is logged, and nothing requires an account. That makes them fast, private, and available whenever you need them.
Frequently Asked Questions
Are these tools really free?
Yes. Every tool on Geneva Tools is completely free to use, with no account, no trial period, and no hidden limits. The site is supported by advertising.
Do you store or track what I enter into the tools?
No. All tools run entirely in your browser — your input never leaves your device and is never sent to our servers. Close the tab and it's gone.
Do I need to sign up or download anything?
No. Everything works directly in your web browser on any device — phone, tablet, or desktop. There are no apps to install and no accounts to create.
Will you add more tools?
Yes — this is just the beginning. New free utilities are added regularly, so check back often or bookmark the site.