221 mg ≈ 2.21 × 10^-7 t. To convert milligrams to metric tonnes, divide by 1,000,000,000: 221 ÷ 1,000,000,000 = 2.21 × 10^-7.
How to convert milligrams to metric tonnes
t = mg × 1 × 10^-9
- 1 mg = 1 × 10^-9 t (and 1 t = 1,000,000,000 mg).
- Multiply the amount by the factor: 221 × 1 × 10^-9 = 2.21 × 10^-7.
- Answer: 221 mg ≈ 2.21 × 10^-7 t (rounded to 6 significant figures).
Shortcut: dividing by 1,000,000,000 gives the same result as multiplying by 1 × 10^-9.
Milligrams to Metric Tonnes table
| Milligrams (mg) | Metric Tonnes (t) |
|---|---|
| 216 mg | 2.16 × 10^-7 t |
| 217 mg | 2.17 × 10^-7 t |
| 218 mg | 2.18 × 10^-7 t |
| 219 mg | 2.19 × 10^-7 t |
| 220 mg | 2.2 × 10^-7 t |
| 221 mg | 2.21 × 10^-7 t |
| 222 mg | 2.22 × 10^-7 t |
| 223 mg | 2.23 × 10^-7 t |
| 224 mg | 2.24 × 10^-7 t |
| 225 mg | 2.25 × 10^-7 t |
| 226 mg | 2.26 × 10^-7 t |
| mg | t |
|---|---|
| 1 mg | 1 × 10^-9 t |
| 5 mg | 5 × 10^-9 t |
| 10 mg | 1 × 10^-8 t |
| 50 mg | 5 × 10^-8 t |
| 100 mg | 1 × 10^-7 t |
| 1,000 mg | 0.000001 t |