20 mi to nmi — 20 miles in nautical miles
Exact 20 ÷ 1.150779 = 17.379525
32 kilometres 186 metres 88 centimetres
20 miles in other units
| Nanometres | 32,186,880,000,000 | nm |
|---|---|---|
| Micrometres | 32,186,880,000 | µm |
| Millimetres | 32,186,880 | mm |
| Centimetres | 3,218,688 | cm |
| Metres | 32,186.88 | m |
| Kilometres | 32.18688 | km |
| Inches | 1,267,200 | in |
| Feet | 105,600 | ft |
| Yards | 35,200 | yd |
| Nautical miles | 17.379525 | nmi |
mi to nmi at a glance
| Miles | Nautical miles |
|---|---|
| 1 mi | 0.86897624 nmi |
| 2 mi | 1.737952 nmi |
| 3 mi | 2.606929 nmi |
| 5 mi | 4.344881 nmi |
| 10 mi | 8.689762 nmi |
| 20 mi | 17.379525 nmi |
| 25 mi | 21.724406 nmi |
| 50 mi | 43.448812 nmi |
| 100 mi | 86.897624 nmi |
| 250 mi | 217.24406 nmi |
| 500 mi | 434.488121 nmi |
| 1,000 mi | 868.976242 nmi |
How to convert miles to nautical miles
Multiply by 0.86897624 — one mile is 0.86897624 nautical miles. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 20 ÷ 1.150779 = 17.379525
In words: about seventeen nautical miles.
What these units are
The mile and the nautical mile are covered in the length unit guide, along with every other unit on this page.
Questions
How many nautical miles are in a mile?
One mile is 0.86897624 nautical miles. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 20 miles in nautical miles?
20 miles is 17.379525 nautical miles. The working is 20 ÷ 1.150779 = 17.379525.
Is an inch exactly 2.54 centimetres?
Yes, exactly. Since 1959 the international inch has been defined as 25.4 millimetres, so the figure is a definition rather than a measurement. Every foot, yard and mile figure on this page follows from it and is equally exact.
Why is a nautical mile different from a mile?
It is tied to the Earth rather than to a body part. One nautical mile is one minute of latitude, fixed at exactly 1,852 metres, which makes chart work straightforward for anyone navigating by degrees.
How do I write my height in metric?
Convert the whole thing to inches first, then multiply by 2.54. Five foot ten is 70 inches, which is 177.8 cm. Converting the feet and the inches separately is where the arithmetic usually goes wrong.
Meter or metre?
Both name the same unit. "Metre" is the international spelling used by the SI and most English-speaking countries; "meter" is standard in the United States. Either spelling will find this page.