ConvBolt — Unit ConverterTonnes to Kilograms Converter
Converting tonnes to kilograms is a multiplication by a fixed factor: 1 t = 1000 kg. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one tonne works out to 1000 kg, the kilogram is the much larger unit of the two: a figure given in kilogram always carries a larger number than the same measurement in tonne. A chart drawn in t can hide that, so check which label the axis uses before you compare two readings.
Where a legal or postal limit is set in kilograms, the same limit expressed in tonnes has to be exact — an overshoot of even one unit can change the chargeable band.
The conversion factor used here is 1000 kg per tonne (0 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 t a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 0.001 t per kg, the exact reciprocal, so a round trip through both pages returns your original number.
Tonnes to Kilograms formula
Use this formula to convert any tonne value to kilograms:
Worked example: 100 t × 1000 = 100000 kg.
Tonnes to Kilograms conversion table
| Tonnes (t) | Kilograms (kg) |
|---|---|
| 0.5 t | 500 kg |
| 1 t | 1000 kg |
| 2 t | 2000 kg |
| 5 t | 5000 kg |
| 10 t | 10000 kg |
| 20 t | 20000 kg |
| 50 t | 50000 kg |
| 100 t | 100000 kg |
| 500 t | 500000 kg |
| 1000 t | 1000000 kg |
How to convert tonnes to kilograms
Multiply the tonne value by 1000 to get the equivalent in kilograms. 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 Kilograms to Tonnes converter instead of dividing by hand; both pages use the same source factors. For every other t conversion in one place, see the t conversion hub.
Frequently asked questions
How many kilograms are in 1 tonne?
1 tonne = 1000 kg.
What is 100 tonnes in kilograms?
100 t = 100000 kg.
Is converting tonnes to kilograms the same as kilograms to tonnes?
No — the direction changes the multiplier. The reverse conversion (1 kg = 0.001 t) is on the Kilograms to Tonnes page.
Related conversions
Try the ConvBolt Unit Converter for any other weight unit, browse the Weight conversions, or read our conversion guides.