Milligrams to Tonnes Converter
1 milligram = 1e-9 tonnes
Distinct from the US short ton (2,000 lb) and the imperial long ton (2,240 lb).
1 milligram equals 1e-9 tonnes
How to convert milligrams to tonnes
These units measure mass. Pounds and ounces mean avoirdupois unless the unit explicitly says troy; a fluid ounce measures volume and requires a density to relate it to mass.
t = mg × 1e-9One milligram is 1e-9 tonnes, so a single multiplication converts any value.
1e-8 t = 10 × 1e-9Distinct from the US short ton (2,000 lb) and the imperial long ton (2,240 lb).
Milligrams to tonnes conversion table
Common values in milligrams, converted to tonnes.
| Milligrams (mg) | Tonnes (t) |
|---|---|
| 1 | 1e-9 |
| 2 | 2e-9 |
| 3 | 3e-9 |
| 4 | 4e-9 |
| 5 | 5e-9 |
| 10 | 1e-8 |
| 20 | 2e-8 |
| 25 | 2.5e-8 |
| 50 | 5e-8 |
| 100 | 0.0000001 |
| 250 | 0.00000025 |
| 500 | 0.0000005 |
| 1,000 | 0.000001 |
About these units
milligrammg
One thousandth of a gram, the standard unit for medication doses.
tonnet
The metric ton: exactly 1,000 kilograms.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.