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CalculatorBuddy

Conversion Calculator

Convert length, temperature, area, volume, and weight between metric, US customary, and imperial units. See the result and the same amount in every unit of that category.

ExampleSample values — edit any field to see your result.

Spaces, tabs, and commas are ignored. Negative values are allowed (temperature).

Results update as you type.

Result

Result: 1 Meter = 0.001 Kilometer

Estimated result

All units

UnitValue
Meter1
Kilometer0.001
Centimeter100
Millimeter1000
Micrometer1000000
Nanometer1000000000
Mile0.0006213712
Yard1.0936132983
Foot3.280839895
Inch39.37007874
Light Year1.057008707E-16
ResultResult: 1 Meter = 0.001 Kilometer

Convert between commonly used units of length, temperature, area, volume, and weight. Enter a value, choose the current unit and the unit you want, and read the result plus a table of every equivalent in that category.

Formula

Each category reduces to one base unit, then expands into the target unit:

base  = toBase(from unit, value)
result = fromBase(to unit, base)

Linear units use a constant factor (value × factor to the base, then ÷ factor from the base). Temperature is affine:

Celsius     = value
Kelvin      = value − 273.15     (to Celsius)
            = value + 273.15     (from Celsius)
Fahrenheit  = 5/9 × (value − 32) (to Celsius)
            = 9/5 × value + 32    (from Celsius)
The result line is formatted with a 12-digit budget (the same gnumberFormat rules as calculator.net), including uppercase E for scientific notation. Very large or tiny amounts such as a light year in meters keep those digits rather than rounding to a short decimal.

Units by category

CategoryBase unitExamples
LengthMeterKilometer, Foot, Inch, Mile, Light Year
TemperatureCelsiusKelvin, Fahrenheit
AreaSquare MeterHectare, Acre, Square Foot, Square Mile
VolumeCubic MeterLiter, US Gallon, Imperial Gallon, Cubic Foot
WeightKilogramGram, Pound, Ounce, Carrat, Metric Ton

Examples

1 meter to kilometers and feet

1 Meter = 0.001 Kilometer and 3.280839895 Foot. 100 Yard = 300 Foot; 5.5 Foot = 66 Inch.

25 C to Kelvin and Fahrenheit

25 Celsius = 298.15 Kelvin and 77 Fahrenheit. 0 Celsius = 32 Fahrenheit; 100 Celsius = 212 Fahrenheit; 32 Fahrenheit = 0 Celsius.

1 kilogram and 1 pound

1 Kilogram = 1000 Gram and 2.2046244202 Pound. 1 Pound = 0.453592 Kilogram and 16 Ounce.

Frequently asked questions

How does this conversion calculator work?
Pick a category (length, temperature, area, volume, or weight), enter a value, and choose the From and To units. The value is converted to the category's base unit, then into the target unit. A table lists the same amount in every unit of that category.
What is 1 meter in feet and kilometers?
1 meter is 0.001 kilometer and 3.280839895 feet. Going the other way, 1 foot is 0.3048 meter, 1 mile is 1.609344 kilometers, and 1 inch is 2.54 centimeters.
How do I convert Celsius to Fahrenheit or Kelvin?
Fahrenheit = 9/5 × Celsius + 32, and Kelvin = Celsius + 273.15. So 0 °C is 32 °F, 100 °C is 212 °F, and 25 °C is 298.15 K. 32 °F is 0 °C. Negative temperatures are allowed.
Which measurement systems are included?
Metric SI units (meter, kilogram, liter, and their multiples) plus US customary and imperial units such as foot, mile, US gallon, Imperial gallon, pound, and acre. Length also includes Light Year. Weight includes Carrat (the spelling used here) and atomic mass unit.
Why is a pound not exactly 0.45359237 kilograms?
This calculator uses the same factors as the long-lived conversion.js tables: 1 pound = 0.453592 kg, 1 US gallon = 0.00378541 m³, 1 square mile = 2,589,990 m², and 1 light year = 9.46066×10¹⁵ m. Those constants are kept for display parity with calculator.net, not replaced with later SI definitions.

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