100 km to nmi — 100 kilometres in nautical miles
Exact 100 ÷ 1.852 = 53.99568
100 kilometres in other units
| Nanometres | 100,000,000,000,000 | nm |
|---|---|---|
| Micrometres | 100,000,000,000 | µm |
| Millimetres | 100,000,000 | mm |
| Centimetres | 10,000,000 | cm |
| Metres | 100,000 | m |
| Inches | 3,937,007.87 | in |
| Feet | 328,083.99 | ft |
| Yards | 109,361.33 | yd |
| Miles | 62.137119 | mi |
| Nautical miles | 53.99568 | nmi |
km to nmi at a glance
| Kilometres | Nautical miles |
|---|---|
| 1 km | 0.5399568 nmi |
| 2 km | 1.079914 nmi |
| 3 km | 1.61987 nmi |
| 5 km | 2.699784 nmi |
| 10 km | 5.399568 nmi |
| 20 km | 10.799136 nmi |
| 25 km | 13.49892 nmi |
| 50 km | 26.99784 nmi |
| 100 km | 53.99568 nmi |
| 250 km | 134.989201 nmi |
| 500 km | 269.978402 nmi |
| 1,000 km | 539.956803 nmi |
How to convert kilometres to nautical miles
Multiply by 0.5399568 — one kilometre is 0.5399568 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 100 ÷ 1.852 = 53.99568
In words: about fifty-four nautical miles.
What these units are
The kilometre 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 kilometre?
One kilometre is 0.5399568 nautical miles. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 100 kilometres in nautical miles?
100 kilometres is 53.99568 nautical miles. The working is 100 ÷ 1.852 = 53.99568.
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.