Unit Converter

The converter has five categories: Speed (mph, kph, m/s, knots), Temperature (Celsius, Fahrenheit, Kelvin), Angle (degrees, radians, gradians), Length (meters, km, cm, mm, inches, feet, miles), and Weight (kg, grams, mg, pounds, ounces).

Yes. All conversions use standard formulas and conversion factors. Results are displayed to 6 decimal places. For temperature, the proper offset formulas are used (not just multiplication).

A statute mile = 1.609 km (land distance). A nautical mile = 1.852 km (sea/air navigation, based on Earth's circumference — 1 minute of latitude). A kilometer = 1000 meters (metric standard). Nautical miles are used with knots (nautical miles per hour) for maritime and aviation navigation.

Conversions use standard mathematical formulas with high precision. However, floating-point arithmetic in JavaScript may produce tiny rounding errors for some values (e.g., 0.1 + 0.2 != 0.3). For scientific or engineering work requiring perfect precision, use a specialized conversion tool or library.

Absolutely. Select your "from" unit and "to" unit from the dropdowns. The converter works bidirectionally for all unit types. Switch units in either dropdown to see the opposite conversion.