The following drag racing correction factors come from the National Hot Rod Association. To convert your Quarter Mile Elapsed Time (ET) and MPH to sea level times, multiply the applicable factor by your ET or MPH.
| Altitude above Sea Level (in feet) | Elapsed Time Factor | MPH Factor |
|---|---|---|
| 1200 | .9874 | 1.0129 |
| 1300 | .9861 | 1.0143 |
| 1400 | .9848 | 1.0157 |
| 1500 | .9835 | 1.0171 |
| 1600 | .9822 | 1.0185 |
| 1700 | .9809 | 1.0199 |
| 1800 | .9796 | 1.0213 |
| 1900 | .9783 | 1.0227 |
| 2000 | .9770 | 1.0241 |
| 2100 | .9757 | 1.0255 |
| 2200 | .9744 | 1.0269 |
| 2300 | .9731 | 1.0283 |
| 2400 | .9718 | 1.0297 |
| 2500 | .9705 | 1.0311 |
| 2600 | .9692 | 1.0325 |
| 2700 | .9679 | 1.0339 |
| 2800 | .9666 | 1.0353 |
| 2900 | .9653 | 1.0367 |
| 3000 | .9640 | 1.0381 |
| 3100 | .9627 | 1.0395 |
| 3200 | .9614 | 1.0409 |
| 3300 | .9601 | 1.0423 |
| 3400 | .9588 | 1.0437 |
| 3500 | .9575 | 1.0451 |
| 3600 | .9562 | 1.0465 |
| 3700 | .9549 | 1.0479 |
| 3800 | .9536 | 1.0493 |
| 3900 | .9523 | 1.0507 |
| 4000 | .9510 | 1.0521 |
| 4100 | .9497 | 1.0535 |
| 4200 | .9484 | 1.0549 |
| 4300 | .9471 | 1.0563 |
| 4400 | .9458 | 1.0577 |
| 4500 | .9445 | 1.0591 |
| 4600 | .9432 | 1.0605 |
| 4700 | .9419 | 1.0619 |
| 4800 | .9406 | 1.0633 |
| 4900 | .9393 | 1.0647 |
| 5000 | .9380 | 1.0661 |
| 5100 | .9367 | 1.0675 |
| 5200 | .9354 | 1.0689 |
| 5300 | .9341 | 1.0703 |
| 5400 | .9328 | 1.0717 |
| 5500 | .9315 | 1.0731 |