Tonnes to Kilograms
Convert tonne to kilogram instantly — type a value and read the result, with the exact formula shown.
Example
1 t = 1,000 kg, 5 t = 5,000 kg, 10 t = 10,000 kg.
How it works
Kilogram = Tonne × 1,000. Every value is converted through a single kilogram base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting tonnes to kilograms is everyday arithmetic in shipping, construction, freight, and agriculture, where bulk loads are quoted in tonnes but invoices, scales, and safe-working-load limits are often expressed in kilograms. A truck rated for "7.5 t" carries up to 7,500 kg; a container said to hold "2 t" of cargo holds 2,000 kg. Because both units sit on the metric ladder, the move is always a clean multiply by 1,000 — no awkward decimals like you get with pounds or stones.
Both units are metric (SI). The kilogram is the SI base unit of mass and, since 2019, is defined by the fixed value of the Planck constant rather than the old platinum cylinder near Paris. The tonne is not strictly an SI unit but is officially accepted for use with SI; it is simply a convenient name for 1,000 kg (1 megagram). That shared decimal heritage is why the conversion factor is exactly 1,000, with no rounding involved.
The rule of thumb is the easiest in all of unit conversion: shift the decimal point three places to the right, or just bolt three zeros onto the end. So 3.2 t becomes 3,200 kg, and 0.05 t becomes 50 kg.
The main trap is mixing up the metric tonne with the US "short ton" (2,000 lb ≈ 907 kg) or the British "long ton" (2,240 lb ≈ 1,016 kg). When a source uses the spelling "ton" rather than "tonne," confirm which one is meant before multiplying — assuming 1,000 kg can throw a heavy-cargo figure off by 8 to 10 percent.
Frequently asked questions
How do you convert tonne to kilogram?
Multiply the number of tonnes by 1,000 to get kilograms. For example, 1 t = 1,000 kg.
What is 1 tonne in kilograms?
1 tonne equals 1,000 kilograms (1 t = 1,000 kg).
How many tonnes are in 1 kilogram?
There are 0.001 tonnes in 1 kilogram.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many kg are in 2.5 tonnes?
2.5 tonnes equals 2,500 kg. Multiply the tonnes by 1,000: 2.5 × 1,000 = 2,500 kg.
Is a tonne the same as a metric ton?
Yes. "Tonne" and "metric ton" are two names for the same unit, both equal to exactly 1,000 kilograms. The spelling "tonne" is preferred internationally to avoid confusion with the US and British tons.
How do I convert kilograms back to tonnes?
Divide the kilograms by 1,000 (or move the decimal three places left). For example, 4,500 kg = 4.5 tonnes.
Is a metric tonne 1000 kg or 2000 lbs?
A metric tonne is exactly 1,000 kg, which is about 2,204.6 lb. The 2,000 lb figure is the US short ton, which is a different unit equal to roughly 907 kg.
How many kilograms is half a tonne?
Half a tonne is 500 kg, since 0.5 × 1,000 = 500.
What is the symbol for tonne and kilogram?
The tonne uses the symbol "t" and the kilogram uses "kg". So 5 tonnes is written 5 t, and 5,000 kilograms is written 5,000 kg.
How many kg is 10 tonnes?
10 tonnes equals 10,000 kg. Just add three zeros to the tonne figure: 10 → 10,000.
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