How many tonnes are in 1 gram?

1 g equals 0.000001 t. This is an exact conversion factor defined by NIST.

How do I convert grams to tonnes?

Multiply the value in g by the conversion factor. For example, 10 g = 0.00001 t. Use our calculator above for instant results.

Is the grams to tonnes conversion exact?

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

Can I convert grams to tonnes 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 grams and tonnes?

Grams (g) and Tonnes (t) are both units of mass but belong to different measurement systems. 1 g = 0.000001 t. Use the converter above to switch between them instantly.

Grams to Tonnes (g → t) — Free Online Converter

g → t Reference Table

g	t
0.001 g	1.000000e-9 t
0.002 g	2.000000e-9 t
0.003 g	3.000000e-9 t
0.004 g	4.000000e-9 t
0.005 g	5.000000e-9 t
0.006 g	6.000000e-9 t
0.007 g	7.000000e-9 t
0.008 g	8.000000e-9 t
0.009 g	9.000000e-9 t
0.01 g	1e-8 t
0.02 g	2e-8 t
0.03 g	3e-8 t
0.04 g	4e-8 t
0.05 g	5e-8 t
0.06 g	6e-8 t
0.07 g	7e-8 t
0.08 g	8e-8 t
0.09 g	9e-8 t
0.1 g	1e-7 t
0.2 g	2e-7 t
0.3 g	3e-7 t
0.4 g	4e-7 t
0.5 g	5e-7 t
0.6 g	6e-7 t
0.7 g	7e-7 t
0.8 g	8e-7 t
0.9 g	9e-7 t
1 g	0.000001 t
1.5 g	0.0000015 t
2 g	0.000002 t
2.5 g	0.0000025 t
3 g	0.000003 t
3.5 g	0.0000035 t
4 g	0.000004 t
4.5 g	0.0000045 t
5 g	0.000005 t
5.5 g	0.0000055 t
6 g	0.000006 t
6.5 g	0.0000065 t
7 g	0.000007 t
7.5 g	0.0000075 t
8 g	0.000008 t
8.5 g	0.0000085 t
9 g	0.000009 t
9.5 g	0.0000095 t
10 g	0.00001 t
11 g	0.000011 t
12 g	0.000012 t
13 g	0.000013 t
14 g	0.000014 t
15 g	0.000015 t
16 g	0.000016 t
17 g	0.000017 t
18 g	0.000018 t
19 g	0.000019 t
20 g	0.00002 t
25 g	0.000025 t
30 g	0.00003 t
35 g	0.000035 t
40 g	0.00004 t
45 g	0.000045 t
50 g	0.00005 t
55 g	0.000055 t
60 g	0.00006 t
65 g	0.000065 t
70 g	0.00007 t
75 g	0.000075 t
80 g	0.00008 t
85 g	0.000085 t
90 g	0.00009 t
95 g	0.000095 t
100 g	0.0001 t
120 g	0.00012 t
125 g	0.000125 t
130 g	0.00013 t
140 g	0.00014 t
150 g	0.00015 t
160 g	0.00016 t
175 g	0.000175 t
180 g	0.00018 t
200 g	0.0002 t
225 g	0.000225 t
250 g	0.00025 t
275 g	0.000275 t
300 g	0.0003 t
350 g	0.00035 t
400 g	0.0004 t
450 g	0.00045 t
500 g	0.0005 t
600 g	0.0006 t
700 g	0.0007 t
750 g	0.00075 t
800 g	0.0008 t
900 g	0.0009 t
1000 g	0.001 t
1200 g	0.0012 t
1250 g	0.00125 t
1500 g	0.0015 t
1750 g	0.00175 t
2000 g	0.002 t
2500 g	0.0025 t
3000 g	0.003 t
4000 g	0.004 t
4500 g	0.0045 t
5000 g	0.005 t
6000 g	0.006 t
7000 g	0.007 t
7500 g	0.0075 t
8000 g	0.008 t
9000 g	0.009 t
10000 g	0.01 t
15000 g	0.015 t
20000 g	0.02 t
25000 g	0.025 t
50000 g	0.05 t
75000 g	0.075 t
100000 g	0.1 t

Values based on NIST SP 811 conversion factors

Why Convert Grams to Tonnes?

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

Mass conversions from g to t 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 Grams to Tonnes

To convert grams to tonnes, use the following formula:

t = g × 0.000001

Example: 1 g = 0.000001 t

For example, 5 g = 0.000005 t, 10 g = 0.00001 t, and 100 g = 0.0001 t. For larger values, 1000 g = 0.001 t. Conversely, 1 t = 1000000 g. 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 Gram?

The gram (g) is a metric unit of mass equal to one-thousandth of a kilogram (0.001 kg). Originally defined as the mass of one cubic centimeter of water at 4°C.

Grams are widely used for small weights in cooking (ingredients), nutrition facts, chemistry, and postal services worldwide.

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).

Grams → Tonnes

Grams to Tonnes Formula