Free Online Calculator & Tools

Fast, accurate, and mobile-friendly tools for everyday calculations. No registration required, completely free to use.

Popular Tools

Scientific calculator with memory functions and history

Generate random numbers for games, lottery, or any purpose

Calculate your Body Mass Index quickly and easily

Count words, characters, sentences and analyze your text

Calculate your daily calorie needs for weight goals

Calculate body fat percentage using Navy method and BMI

Calculate your Total Daily Energy Expenditure for fitness goals

Calculate your due date and track pregnancy milestones

Track your fertile window and optimize conception timing

Create custom QR codes for text, URLs, WiFi, and contact info

Generate secure passwords with customizable options

Pick colors, convert formats, and generate palettes

Calculators for basic and advanced mathematical operations

Mortgage, loan, and investment calculators

BMI, calorie, and fitness calculators

Word counters, text analyzers and writing utilities

Color pickers, palette generators and design utilities

Date calculators, age calculators and time utilities

Unit converters for length, weight, temperature and more

Password generators, QR codes and encryption utilities