Convert knots to miles per hour
Converting knots to miles per hour is a common speed task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 kn equals 1.15078 mph, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert knots to miles per hour
To convert knots to miles per hour, multiply the number of knots by 1.15078. For example, 10 kn × 1.15078 = 11.5078 mph.
mph = kn × 1.15078
- Write down the value in knots you want to convert.
- Multiply it by 1.15078 (the exact kn→mph factor).
- The result is your value in miles per hour. Check it below with the converter or the table.
Conversion table
Common values of knots and their equivalents in miles per hour:
| kn | mph |
|---|---|
| 1 | 1.15078 |
| 2 | 2.30156 |
| 3 | 3.45234 |
| 4 | 4.60312 |
| 5 | 5.7539 |
| 10 | 11.5078 |
| 20 | 23.0156 |
| 25 | 28.7695 |
| 50 | 57.539 |
| 100 | 115.078 |
| 250 | 287.695 |
| 500 | 575.39 |
About these units
Knot (kn). A knot is one nautical mile (exactly 1,852 meters) per hour. It is the standard speed unit in aviation, maritime navigation and meteorology worldwide.
Mile per Hour (mph). Miles per hour is the road speed unit in the United States and the United Kingdom, expressing how many statute miles are covered in one hour. One mph equals exactly 0.44704 m/s.
Frequently asked questions
How do I convert knots to miles per hour?
To convert knots to miles per hour, multiply the number of knots by 1.15078. For example, 10 kn × 1.15078 = 11.5078 mph. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many miles per hour are in 1 knot?
1 kn = 1.15078 mph. That is the fixed relationship used by this converter and by international standards.
How many knots are in 1 mile per hour?
1 mph = 0.868976 kn. If you are converting in the opposite direction, use our Mile per Hour to Knot converter for the dedicated table and FAQ.
Is the knots to miles per hour conversion exact?
Yes. Both units are defined by international agreement, so the factor of 1.15078 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is knot used for?
A knot is one nautical mile (exactly 1,852 meters) per hour. It is the standard speed unit in aviation, maritime navigation and meteorology worldwide.