Calculators

Calculate percentages, convert units, and compute age in seconds. From simple percentage calculations to comprehensive unit conversions across length, weight, temperature, and more. Quick calculations without the clutter.

Percentage Calculator

Calculate percentages quickly and easily. What is X% of Y? What percent is A of B?

Age Calculator

Calculate your exact age in years, months, days and hours. See how many days until your next birthday.

Unit Converter

Convert units: length, weight, temperature, area, volume, speed and data.

About these tools

These tools are designed for speed and simplicity. No registration, no downloads, no ads. Use them directly in your browser with full keyboard support.

Pro tip: Press K to search quickly.