Knots to MPH Converter
Quick answer: To convert knots to MPH, multiply by 1.150779. For example, 10 kn is 11.50779 mph. One knot equals 1.150779 mph.
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Use the Knots to MPH Converter
Knots to MPH formula and what each symbol means
mph = kn × 1.150779
| Symbol | Meaning |
|---|---|
| kn | Knot |
| mph | Mile per hour |
Knots to MPH examples
1 kn
1 kn × 1.150779 = 1.150779 mph.
10 kn
10 kn × 1.150779 = 11.50779 mph.
100 kn
100 kn × 1.150779 = 115.0779 mph.
Knots compared with MPH
One kn is 1.151 times as large as one mph, so your number gets bigger when you convert knots to MPH and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About knots and MPH
Knot (kn): Nautical miles per hour, exactly 1852/3600 m/s. Mile per hour (mph): Miles per hour, exactly 0.44704 m/s.
Where knots to MPH conversions are used
Wind and weather reports mix m/s, km/h, mph and knots. Road signs use km/h or mph depending on the country, and aviation and shipping use knots.
How to calculate Knots to MPH step by step
- Enter the value in kn (the starting unit).
- Multiply by 1.150779, because 1 kn = 1.150779 mph.
- The product is the value in mph. To go back, divide by 1.150779 or multiply by 0.8689762.
Popular speed conversions
How to read your Knots to MPH result
Quick estimate: multiply by about 1.15 to get MPH from knots; this is within 0.1% of the exact factor. To go from km/h to m/s divide by 3.6.
| KNOTS | MPH |
|---|---|
| 1 | 1.150779 |
| 2 | 2.301559 |
| 5 | 5.753897 |
| 10 | 11.50779 |
| 20 | 23.01559 |
| 50 | 57.53897 |
| 100 | 115.0779 |
| 1,000 | 1,150.779 |
MPH to Knots: quick table
| MPH | KNOTS |
|---|---|
| 1 | 0.8689762 |
| 5 | 4.344881 |
| 10 | 8.689762 |
| 25 | 21.72441 |
| 50 | 43.44881 |
| 100 | 86.89762 |
| 250 | 217.2441 |
| 500 | 434.4881 |
Common mistakes when calculating Knots to MPH
- Forgetting to divide by 3.6 for km/h to m/s.
- Dividing when you should multiply: from kn to mph multiply by 1.150779; from mph to kn divide by 1.150779.
Knots to MPH FAQ
How many mph are in 1 kn?
1 kn equals 1.150779 mph.
How many kn are in 1 mph?
1 mph equals 0.8689762 kn.
Is 1 kn = 1.150779 mph an exact conversion?
Yes. The knot and the mile per hour are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 1.150779 is just that ratio shown to 7 significant figures.
What is a mile per hour (mph)?
Miles per hour, exactly 0.44704 m/s.
How can I estimate knots to MPH in my head?
Quick estimate: multiply by about 1.15 to get MPH from knots; this is within 0.1% of the exact factor.
What is 80 kn in MPH?
80 kn = 92.06236 mph (since 80 × 1.150779).
What is 500 kn in MPH?
500 kn = 575.3897 mph (since 500 × 1.150779).
What is 15 kn in MPH?
15 kn = 17.26169 mph (since 15 × 1.150779).
How many decimals should I keep when converting kn to mph?
Match the precision of your original measurement. For example, 11.50779 mph rounds to 11.5 mph at 3 significant figures; keep more digits only for engineering or scientific work.
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors