To convert US survey chains to fermis, multiply the value by 2.01168 × 10¹⁶. To go the other way, multiply fermis by 4.97096 × 10⁻¹⁷ to get US survey chains.
| US Survey Chains (chUS) | Fermis (fm) |
|---|---|
| 1 chUS | 2.01168 × 10¹⁶ fm |
| 2 chUS | 4.02337 × 10¹⁶ fm |
| 3 chUS | 6.03505 × 10¹⁶ fm |
| 4 chUS | 8.04674 × 10¹⁶ fm |
| 5 chUS | 1.00584 × 10¹⁷ fm |
| 6 chUS | 1.20701 × 10¹⁷ fm |
| 7 chUS | 1.40818 × 10¹⁷ fm |
| 8 chUS | 1.60935 × 10¹⁷ fm |
| 9 chUS | 1.81052 × 10¹⁷ fm |
| 10 chUS | 2.01168 × 10¹⁷ fm |
| 12 chUS | 2.41402 × 10¹⁷ fm |
| 14 chUS | 2.81636 × 10¹⁷ fm |
| 15 chUS | 3.01753 × 10¹⁷ fm |
| 20 chUS | 4.02337 × 10¹⁷ fm |
| 21 chUS | 4.22454 × 10¹⁷ fm |
| 24 chUS | 4.82804 × 10¹⁷ fm |
| 25 chUS | 5.02921 × 10¹⁷ fm |
| 30 chUS | 6.03505 × 10¹⁷ fm |
| 40 chUS | 8.04674 × 10¹⁷ fm |
| 50 chUS | 1.00584 × 10¹⁸ fm |
| 60 chUS | 1.20701 × 10¹⁸ fm |
| 75 chUS | 1.50876 × 10¹⁸ fm |
| 80 chUS | 1.60935 × 10¹⁸ fm |
| 100 chUS | 2.01168 × 10¹⁸ fm |
| 200 chUS | 4.02337 × 10¹⁸ fm |
| 250 chUS | 5.02921 × 10¹⁸ fm |
| 300 chUS | 6.03505 × 10¹⁸ fm |
| 400 chUS | 8.04674 × 10¹⁸ fm |
| 500 chUS | 1.00584 × 10¹⁹ fm |
| 750 chUS | 1.50876 × 10¹⁹ fm |
| 1,000 chUS | 2.01168 × 10¹⁹ fm |
25 chUS × 2.01168 × 10¹⁶ = 5.02921 × 10¹⁷ fm
Try this example →250 chUS × 2.01168 × 10¹⁶ = 5.02921 × 10¹⁸ fm
Try this example →US survey chain (chUS). The US survey chain is 66 US survey feet, about 20.1168 m.
Fermi (fm). A fermi (femtometer) is 10⁻¹⁵ meters, roughly the size of a proton, used in nuclear physics.
There are 2.01168 × 10¹⁶ fermis in one US survey chain.
Multiply the number of US survey chains by 2.01168 × 10¹⁶. For example, 10 US survey chains equal 2.01168 × 10¹⁷ fermis.
One fermi equals 4.97096 × 10⁻¹⁷ US survey chains.
2.41402 × 10¹⁷ fermis. Other common values: 5 US survey chains = 1.00584 × 10¹⁷ fermis and 100 US survey chains = 2.01168 × 10¹⁸ fermis.