Everyday examples
Convert inches to centimetres, pounds to kilograms, Celsius to Fahrenheit, or miles to kilometres with live results.
Calculators · Local processing
Unit Converter
Convert length, weight, temperature, area, volume, speed, time, storage, pressure, energy, and power.
Live conversion on this device
Convert common units
The practical guide
Use one precise converter for common measurement families.
Choose a category, enter decimals or scientific notation, and swap units without retyping the value.
Sensible number formatting
Results avoid binary floating-point noise while retaining useful precision and scientific notation for extreme magnitudes.
Compatible units only
Each category uses a consistent base unit. Temperature uses separate offset-aware formulas rather than a simple multiplication factor.
Privacy by architecture
Your files and tool inputs stay in your browser.
The selected files, inputs, settings, and outputs are processed in this page and are not uploaded to any server.
Questions, answered
Frequently asked questions
Are conversion values sent anywhere?
No. Every formula runs in this page.
Does storage use 1,000 or 1,024?
The KB, MB, GB, and TB options use decimal SI units: 1 KB is 1,000 bytes.
Can I enter scientific notation?
Yes. Number inputs accept values such as 1e6 where the browser supports standard numeric notation.