Convert kg to tonnes
Convert kg to tonnes instantly. 1 kg = 0.001 t. Formula, worked examples and a quick reference table.
Last updated
One kilogram equals 0.001 metric tons. To convert any number of kilograms to metric tons, multiply by 0.001.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Weight and mass conversions matter most in three places: shipping, where a rate band can turn on a single kilogram; cooking, where recipes cross between metric grams and imperial ounces; and personal weight, where Britain and Ireland use stones, the United States uses pounds, and everywhere else uses kilograms. Strictly these are mass units rather than weight units, and the distinction only bites in physics, where weight is a force measured in newtons.
kg to tonnes formula
To go the other way, use kilogram = metric ton ÷ 0.001.
About these units
Since 2019 the kilogram has been defined by the Planck constant rather than a metal cylinder in Paris, making it reproducible in any properly equipped laboratory.
The tonne is 1,000 kilograms — close enough to the imperial long ton to be confused with it, and about 10% larger than the US short ton of 2,000 pounds.
Kilogram is also written kilogramme, kilogrammes, kilograms, kilos, kilo and kgs. Metric Ton is also written tonne, tonnes, metric tonne, ton, tons and mt.
Sources
kg to tonnes conversion table
| Kilogram | Metric Ton |
|---|---|
| 1 kg | 0.001 t |
| 2 kg | 0.002 t |
| 3 kg | 0.003 t |
| 5 kg | 0.005 t |
| 10 kg | 0.01 t |
| 20 kg | 0.02 t |
| 25 kg | 0.025 t |
| 50 kg | 0.05 t |
| 100 kg | 0.1 t |
| 250 kg | 0.25 t |
| 500 kg | 0.5 t |
| 1,000 kg | 1 t |
Frequently asked questions
How many metric tons are in a kilogram? +
There are 0.001 metric tons in one kilogram.
What is 10 kg in t? +
10 kg equals 0.01 t. Multiply 10 by 0.001.
How do I convert metric ton back to kilogram? +
Use kilogram = metric ton ÷ 0.001. The converter above handles both directions, or see our dedicated tonnes to kg page.
How accurate is this kilogram to metric ton conversion? +
The factor used is 0.001, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate kg to t in my head? +
Divide by 1,000. That matches the true factor of 0.001 exactly, so no adjustment is needed for a mental estimate.