| 1 ft = 0.0000631 lea |
| 2 ft = 0.000126 lea |
| 3 ft = 0.000189 lea |
| 4 ft = 0.000253 lea |
| 5 ft = 0.000316 lea |
| 6 ft = 0.000379 lea |
| 7 ft = 0.000442 lea |
| 8 ft = 0.000505 lea |
| 9 ft = 0.000568 lea |
| 10 ft = 0.000631 lea |
| 15 ft = 0.000947 lea |
| 50 ft = 0.00316 lea |
| 100 ft = 0.00631 lea |
| 500 ft = 0.0316 lea |
| 1000 ft = 0.0631 lea |
| 5000 ft = 0.316 lea |
| 10000 ft = 0.631 lea |