How to Convert Tonnes to Grams (t to g)
Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds. This guide shows how to convert tonnes into grams by hand, with examples and a quick-reference table.
The conversion
To convert tonnes to grams, multiply the value by 1,000,000. To go the other way, divide by the same number (or multiply by 1.000000e-06). For a quick estimate, multiply by about 1,000,000.
Grams = tonnes × 1,000,000
Worked examples
- 3 t = 3,000,000 g
- 12.5 t = 12,500,000 g
- 75 t = 75,000,000 g
Tonnes to Grams table
| Tonnes | Grams |
|---|---|
| 1 t | 1,000,000 g |
| 2 t | 2,000,000 g |
| 5 t | 5,000,000 g |
| 10 t | 10,000,000 g |
| 20 t | 20,000,000 g |
| 25 t | 25,000,000 g |
| 50 t | 50,000,000 g |
| 100 t | 100,000,000 g |
| 250 t | 250,000,000 g |
| 500 t | 500,000,000 g |
| 1,000 t | 1,000,000,000 g |
Common questions
Is t to g exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Grams to Tonnes converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Tonnes to Grams Converter or browse all weight converters.
Run your own numbers: Tonnes to Grams Converter