Example: To convert 5 femtogram to tonne, multiply 5 by 1e+21 to get 5.0000e+21 t (5.0000e+21 t).
| fg | t |
|---|---|
| 1e-21 fg | 1 t (1.0000e+0 t) |
| 1 fg | 1.0000e+21 t (1.0000e+21 t) |
| 2 fg | 2.0000e+21 t (2.0000e+21 t) |
| 3 fg | 3.0000e+21 t (3.0000e+21 t) |
| 4 fg | 4.0000e+21 t (4.0000e+21 t) |
| 5 fg | 5.0000e+21 t (5.0000e+21 t) |
| 6 fg | 6.0000e+21 t (6.0000e+21 t) |
| 7 fg | 7.0000e+21 t (7.0000e+21 t) |
| 8 fg | 8.0000e+21 t (8.0000e+21 t) |
| 9 fg | 9.0000e+21 t (9.0000e+21 t) |
| 10 fg | 1.0000e+22 t (1.0000e+22 t) |
| 11 fg | 1.1000e+22 t (1.1000e+22 t) |
| 12 fg | 1.2000e+22 t (1.2000e+22 t) |
| 13 fg | 1.3000e+22 t (1.3000e+22 t) |
| 14 fg | 1.4000e+22 t (1.4000e+22 t) |