Miles to Nautical Miles (mi to nmi)
Free online mile to nautical mile converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
LENGTH CONVERTER — INSTANT RESULT
Formula: multiply the mile value by 0.86897624 — i.e. nmi = mi × 0.86897624
Quick check: 1 mi = 0.86897624 nmi
Quick check: 1 mi = 0.86897624 nmi
Miles to Nautical Miles conversion table
| Miles (mi) | Nautical Miles (nmi) |
|---|---|
| 1 mi | 0.86897624 nmi |
| 2 mi | 1.73795248 nmi |
| 3 mi | 2.60692873 nmi |
| 4 mi | 3.47590497 nmi |
| 5 mi | 4.34488121 nmi |
| 6 mi | 5.21385745 nmi |
| 7 mi | 6.08283369 nmi |
| 8 mi | 6.95180994 nmi |
| 9 mi | 7.82078618 nmi |
| 10 mi | 8.68976242 nmi |
| 15 mi | 13.03464363 nmi |
| 20 mi | 17.37952484 nmi |
| 25 mi | 21.72440605 nmi |
| 30 mi | 26.06928726 nmi |
| 40 mi | 34.75904968 nmi |
| 50 mi | 43.4488121 nmi |
| 75 mi | 65.17321814 nmi |
| 100 mi | 86.89762419 nmi |
| 250 mi | 217.24406048 nmi |
| 500 mi | 434.48812095 nmi |
| 1,000 mi | 868.9762419 nmi |
How to convert miles to nautical miles
To convert miles to nautical miles, multiply the amount in miles by 0.86897624. For example, 10 mi = 8.68976242 nmi. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between metric and imperial/US customary length units, plus nautical, astronomical and survey units. The meter is the SI base unit of length; all factors below are exact definitions where a legal definition exists.
Frequently asked questions
How many nautical miles are in one mile?
One mile is exactly 0.86897624 nautical miles.
How do I convert mi to nmi?
Multiply the mi value by 0.86897624 to get nmi. The converter at the top of this page does this automatically and works in both directions.
How much is 100 miles in nautical miles?
100 miles equals 86.89762419 nautical miles.