How many kilograms are in 1 tonne?

1 t equals 1000 kg. This is an exact conversion factor defined by NIST.

How do I convert tonnes to kilograms?

Multiply the value in t by the conversion factor. For example, 10 t = 10000 kg. Use our calculator above for instant results.

Is the tonnes to kilograms conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Can I convert tonnes to kilograms offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between tonnes and kilograms?

Tonnes (t) and Kilograms (kg) are both units of mass but belong to different measurement systems. 1 t = 1000 kg. Use the converter above to switch between them instantly.

Tonnes to Kilograms (t → kg) — Free Online Converter

t → kg Reference Table

t	kg
0.001 t	1 kg
0.002 t	2 kg
0.003 t	3 kg
0.004 t	4 kg
0.005 t	5 kg
0.006 t	6 kg
0.007 t	7 kg
0.008 t	8 kg
0.009 t	9 kg
0.01 t	10 kg
0.02 t	20 kg
0.03 t	30 kg
0.04 t	40 kg
0.05 t	50 kg
0.06 t	60 kg
0.07 t	70 kg
0.08 t	80 kg
0.09 t	90 kg
0.1 t	100 kg
0.2 t	200 kg
0.3 t	300 kg
0.4 t	400 kg
0.5 t	500 kg
0.6 t	600 kg
0.7 t	700 kg
0.8 t	800 kg
0.9 t	900 kg
1 t	1000 kg
1.5 t	1500 kg
2 t	2000 kg
2.5 t	2500 kg
3 t	3000 kg
3.5 t	3500 kg
4 t	4000 kg
4.5 t	4500 kg
5 t	5000 kg
5.5 t	5500 kg
6 t	6000 kg
6.5 t	6500 kg
7 t	7000 kg
7.5 t	7500 kg
8 t	8000 kg
8.5 t	8500 kg
9 t	9000 kg
9.5 t	9500 kg
10 t	10000 kg
11 t	11000 kg
12 t	12000 kg
13 t	13000 kg
14 t	14000 kg
15 t	15000 kg
16 t	16000 kg
17 t	17000 kg
18 t	18000 kg
19 t	19000 kg
20 t	20000 kg
25 t	25000 kg
30 t	30000 kg
35 t	35000 kg
40 t	40000 kg
45 t	45000 kg
50 t	50000 kg
55 t	55000 kg
60 t	60000 kg
65 t	65000 kg
70 t	70000 kg
75 t	75000 kg
80 t	80000 kg
85 t	85000 kg
90 t	90000 kg
95 t	95000 kg
100 t	100000 kg
120 t	120000 kg
125 t	125000 kg
130 t	130000 kg
140 t	140000 kg
150 t	150000 kg
160 t	160000 kg
175 t	175000 kg
180 t	180000 kg
200 t	200000 kg
225 t	225000 kg
250 t	250000 kg
275 t	275000 kg
300 t	300000 kg
350 t	350000 kg
400 t	400000 kg
450 t	450000 kg
500 t	500000 kg
600 t	600000 kg
700 t	700000 kg
750 t	750000 kg
800 t	800000 kg
900 t	900000 kg
1000 t	1000000 kg
1200 t	1200000 kg
1250 t	1250000 kg
1500 t	1500000 kg
1750 t	1750000 kg
2000 t	2000000 kg
2500 t	2500000 kg
3000 t	3000000 kg
4000 t	4000000 kg
4500 t	4500000 kg
5000 t	5000000 kg
6000 t	6000000 kg
7000 t	7000000 kg
7500 t	7500000 kg
8000 t	8000000 kg
9000 t	9000000 kg
10000 t	10000000 kg
15000 t	15000000 kg
20000 t	20000000 kg
25000 t	25000000 kg
50000 t	50000000 kg
75000 t	75000000 kg
100000 t	100000000 kg

Values based on NIST SP 811 conversion factors

Why Convert Tonnes to Kilograms?

Converting between tonnes (t) and kilograms (kg) is one of the most common mass conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert t to kg saves time and prevents errors.

Mass conversions from t to kg are vital in culinary arts, logistics, and pharmaceutical industries. Professional chefs and home bakers rely on precise ingredient conversions to replicate international recipes — a slight variation in flour or leavening agents can ruin the texture of a dish. In global shipping, freight costs and vehicle load limits depend on accurate weight calculations to ensure safety and compliance with transport regulations. Furthermore, in healthcare and chemistry, dosage calculations must be exact; confusing mass units can lead to ineffective treatments or dangerous overdoses. Reliable mass conversion ensures consistency across borders and disciplines.

How to Convert Tonnes to Kilograms

To convert tonnes to kilograms, use the following formula:

kg = t × 1000

Example: 1 t = 1000 kg

For example, 5 t = 5000 kg, 10 t = 10000 kg, and 100 t = 100000 kg. For larger values, 1000 t = 1000000 kg. Conversely, 1 kg = 0.001 t. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

Mass vs Weight: confusing mass (kg) with weight/force (Newtons or lbs-force).
Ton variations: mixing up Short Ton (US), Long Ton (UK), and Metric Tonne.
Ounce confusion: confusing Ounces (weight) with Fluid Ounces (volume).

Pro Tips

Kitchen scales: Use the 'Tare' button to zero out container weight.
Water weight: 1 Liter of water weighs exactly 1 kg (at 4°C). Useful benchmark.
Conversion rule: To get kg from lbs, divide by 2.2 (approx halve it).

What is a Tonne?

The tonne (t), or metric ton, is a non-SI unit accepted for use with SI, equal to 1,000 kilograms (approximately 2,204.6 pounds).

Tonnes are used worldwide for measuring heavy loads, such as cargo shipping, vehicle weights, and industrial production (steel, grain, coal).

What is a Kilogram?

The kilogram (kg) is the base unit of mass in the International System of Units (SI). Originally defined by a platinum-iridium artifact, since 2019 it is defined by the Planck constant (h) set to 6.62607015×10⁻³⁴ J⋅s.

Kilograms are the global standard for measuring mass and weight in science, commerce, and daily life (body weight, groceries). Used nearly everywhere except the US.

Tonnes → Kilograms

Tonnes to Kilograms Formula