ConvBolt — Unit ConverterKilograms to Tonnes Converter
Converting kilograms to tonnes is a multiplication by a fixed factor: 1 kg = 0.001 t. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one kilogram works out to 0.001 t, the tonne is the far smaller unit of the two: a figure given in tonne always carries a smaller number than the same measurement in kilogram. A chart drawn in kg can hide that, so check which label the axis uses before you compare two readings.
Where a legal or postal limit is set in tonnes, the same limit expressed in kilograms has to be exact — an overshoot of even one unit can change the chargeable band.
The conversion factor used here is 0.001 t per kilogram (3 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 kg a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 1000 kg per t, the exact reciprocal, so a round trip through both pages returns your original number.
Kilograms to Tonnes formula
Use this formula to convert any kilogram value to tonnes:
Worked example: 100 kg × 0.001 = 0.1 t.
Kilograms to Tonnes conversion table
| Kilograms (kg) | Tonnes (t) |
|---|---|
| 0.5 kg | 0.0005 t |
| 1 kg | 0.001 t |
| 2 kg | 0.002 t |
| 5 kg | 0.005 t |
| 10 kg | 0.01 t |
| 20 kg | 0.02 t |
| 50 kg | 0.05 t |
| 100 kg | 0.1 t |
| 500 kg | 0.5 t |
| 1000 kg | 1 t |
How to convert kilograms to tonnes
Multiply the kilogram value by 0.001 to get the equivalent in tonnes. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Tonnes to Kilograms converter instead of dividing by hand; both pages use the same source factors. For every other kg conversion in one place, see the kg conversion hub.
Frequently asked questions
How many tonnes are in 1 kilogram?
1 kilogram = 0.001 t.
What is 100 kilograms in tonnes?
100 kg = 0.1 t.
Is converting kilograms to tonnes the same as tonnes to kilograms?
No — the direction changes the multiplier. The reverse conversion (1 t = 1000 kg) is on the Tonnes to Kilograms page.
Related conversions
Try the ConvBolt Unit Converter for any other weight unit, browse the Weight conversions, or read our conversion guides.