Which measurement systems are supported?

We support Metric (SI), Imperial, US Customary, and standard scientific units across Length, Weight, Temperature, Area, Volume, and Time.

Are the conversion factors exact?

Yes, conversions use international standards (such as 1 inch = exactly 25.4 mm and 1 lb = exactly 453.59237 g).

Converters 100% Free & Privacy-First

Convert between metric and imperial measurement units for length, weight, temperature, area, volume, and time.

Unit Converter Interactive Workspace

Client-side calculations and instant parameter controls are initializing. All processing occurs securely in your browser.

1 Select a measurement category tab (Length, Weight, Temperature, Area, Volume, or Time).
2 Enter the numerical value in the source unit input field.
3 Select the source and target measurement units from the dropdown menus.
4 Use the swap button to reverse the conversion direction with a single click.

Target Value = Source Value × Conversion Factor

Calculations are performed with IEEE floating point mathematical precision directly in your device memory.

Input: 10 Kilograms (kg) to Pounds (lbs)

Result: 22.0462 lbs

10 kg × 2.20462 = 22.0462 pounds

Input: 100 Meters (m) to Feet (ft)

Result: 328.084 ft

100 m × 3.28084 = 328.084 feet

Input: 25°C to Fahrenheit

Result: 77.0°F

(25 × 9/5) + 32 = 77.0°F

Which measurement systems are supported?: We support Metric (SI), Imperial, US Customary, and standard scientific units across Length, Weight, Temperature, Area, Volume, and Time.
Are the conversion factors exact?: Yes, conversions use international standards (such as 1 inch = exactly 25.4 mm and 1 lb = exactly 453.59237 g).

Convert length and distance between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.

Convert weight and mass between milligrams, grams, kilograms, metric tonnes, ounces, and pounds.

Convert temperatures instantly between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with reference benchmarks.

Convert digital storage sizes between Bytes, KB, MB, GB, TB, and PB with Decimal (base 1000) and Binary (base 1024) support.

Two-way conversion between standard Arabic numbers and Roman numerals with step-by-step arithmetic breakdown.

Convert between Binary (Base 2), Decimal (Base 10), Hexadecimal (Base 16), and Octal (Base 8) with 8-bit and 16-bit word displays.