Free Online Tools & Calculators
Handy tools for everyday tasks. Generate passwords, calculate BMI, convert currencies, create QR codes, and more.
Password Generator
Generate strong, secure passwords for your online accounts.
BMI Calculator
Calculate your Body Mass Index and understand your weight status.
Age Calculator
Calculate your exact age in years, months, and days.
Currency Converter
Convert between different world currencies with up-to-date rates.
QR Code Generator
Create custom QR codes for URLs, text, contact info, and more.
Word Counter
Count words, characters, sentences, and paragraphs in your text.
Random Number Generator
Generate random numbers within a specified range.
Color Picker
Select colors and get their HEX, RGB, and HSL values.
Tip Calculator
Calculate tips for restaurants, delivery, and other services.
Time Zone Converter
Convert time between different time zones worldwide.
Featured Articles
How to Create Strong Passwords and Keep Them Secure
Learn the best practices for creating and managing strong passwords to protect your online accounts from hackers.
Understanding BMI: What It Means for Your Health
A comprehensive guide to Body Mass Index (BMI), its calculation, and what the numbers really mean for your health.
Currency Conversion Basics for Travelers and Businesses
Everything you need to know about currency conversion rates, fees, and how to get the best deals when exchanging money.
About Cerr Tools
Welcome to Cerr Tools, your one-stop destination for free online tools and calculators designed to make your life easier. Our mission is to provide simple, intuitive, and powerful tools that help you with everyday tasks.
Whether you need to generate a secure password, calculate your BMI, convert currencies, or create a QR code, we've got you covered. All our tools are completely free to use with no registration required.
We're constantly adding new tools and improving existing ones based on user feedback. If you have any suggestions or feature requests, please don't hesitate to contact us.