Professional Unit Converter Professional Unit Converter Length From Millimeter (mm) Centimeter (cm) Meter (m) Kilometer (km) Inch (in) Foot (ft) Yard (yd) Mile (mi) To Millimeter (mm) Centimeter (cm) Meter (m) Kilometer (km) Inch (in) Foot (ft) Yard (yd) Mile (mi) Weight From Milligram (mg) Gram (g) Kilogram (kg) Metric Ton (t) Ounce (oz) Pound (lb) Stone (st) To Milligram (mg) Gram (g) Kilogram (kg) Metric Ton (t) Ounce (oz) Pound (lb) Stone (st) Temperature From °C (Celsius) °F (Fahrenheit) K (Kelvin) To °C (Celsius) °F (Fahrenheit) K (Kelvin) Volume From Milliliter (ml) Liter (l) Cubic Meter (m³) Teaspoon (tsp) Tablespoon (tbsp) Fluid Ounce (fl oz) Cup (cup) Pint (pt) Quart (qt) Gallon (gal) To Milliliter (ml) Liter (l) Cubic Meter (m³) Teaspoon (tsp) Tablespoon (tbsp) Fluid Ounce (fl oz) Cup (cup) Pint (pt) Quart (qt) Gallon (gal) Area From Square Millimeter (mm²) Square Centimeter (cm²) Square Meter (m²) Hectare (ha) Square Kilometer (km²) Square Inch (in²) Square Foot (ft²) Square Yard (yd²) Acre (ac) Square Mile (mi²) To Square Millimeter (mm²) Square Centimeter (cm²) Square Meter (m²) Hectare (ha) Square Kilometer (km²) Square Inch (in²) Square Foot (ft²) Square Yard (yd²) Acre (ac) Square Mile (mi²) Speed From Meters per second (m/s) Kilometers per hour (km/h) Miles per hour (mph) Feet per second (ft/s) Knot (kn) To Meters per second (m/s) Kilometers per hour (km/h) Miles per hour (mph) Feet per second (ft/s) Knot (kn) Time From Nanosecond (ns) Microsecond (μs) Millisecond (ms) Second (s) Minute (min) Hour (h) Day (d) Week (wk) Month (mo) Year (yr) To Nanosecond (ns) Microsecond (μs) Millisecond (ms) Second (s) Minute (min) Hour (h) Day (d) Week (wk) Month (mo) Year (yr)