20 nmi to km — 20 nautical miles in kilometres
Exact 20 × 1.852 = 37.04
37 kilometres 40 metres
20 nautical miles in other units
| Nanometres | 37,040,000,000,000 | nm |
|---|---|---|
| Micrometres | 37,040,000,000 | µm |
| Millimetres | 37,040,000 | mm |
| Centimetres | 3,704,000 | cm |
| Metres | 37,040 | m |
| Kilometres | 37.04 | km |
| Inches | 1,458,267.72 | in |
| Feet | 121,522.31 | ft |
| Yards | 40,507.44 | yd |
| Miles | 23.015589 | mi |
nmi to km at a glance
| Nautical miles | Kilometres |
|---|---|
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 3 nmi | 5.556 km |
| 5 nmi | 9.26 km |
| 10 nmi | 18.52 km |
| 20 nmi | 37.04 km |
| 25 nmi | 46.3 km |
| 50 nmi | 92.6 km |
| 100 nmi | 185.2 km |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 1,000 nmi | 1,852 km |
How to convert nautical miles to kilometres
Multiply by 1.852 — one nautical mile is 1.852 kilometres. 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 × 1.852 = 37.04
In words: about thirty-seven kilometres.
What these units are
The nautical mile and the kilometre are covered in the length unit guide, along with every other unit on this page.
Questions
How many kilometres are in a nautical mile?
One nautical mile is 1.852 kilometres. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 20 nautical miles in kilometres?
20 nautical miles is 37.04 kilometres. The working is 20 × 1.852 = 37.04.
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.