ConvBolt — Unit ConverterKnots to Miles per hour Converter
Converting knots to miles per hour is a multiplication by a fixed factor: 1 kn = 1.150779 mph. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one knot works out to 1.150779 mph, the mile per hour is the slightly larger unit of the two: a figure given in mile per hour always carries a larger number than the same measurement in knot. A chart drawn in kn can hide that, so check which label the axis uses before you compare two readings.
Driving and sport are the everyday sources of this pair: a dashboard reading in knots against a speed limit posted in miles per hour, or a training plan written in one while a device reports the other.
The conversion factor used here is 1.150779 mph per knot (6 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 kn a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 0.8689762 kn per mph, the exact reciprocal, so a round trip through both pages returns your original number.
Knots to Miles per hour formula
Use this formula to convert any knot value to miles per hour:
Worked example: 100 kn × 1.150779 = 115.0779 mph.
Knots to Miles per hour conversion table
| Knots (kn) | Miles per hour (mph) |
|---|---|
| 0.5 kn | 0.5753897 mph |
| 1 kn | 1.150779 mph |
| 2 kn | 2.301559 mph |
| 5 kn | 5.753897 mph |
| 10 kn | 11.50779 mph |
| 20 kn | 23.01559 mph |
| 50 kn | 57.53897 mph |
| 100 kn | 115.0779 mph |
| 500 kn | 575.3897 mph |
| 1000 kn | 1150.779 mph |
How to convert knots to miles per hour
Multiply the knot value by 1.150779 to get the equivalent in miles per hour. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Miles per hour to Knots converter instead of dividing by hand; both pages use the same source factors. For every other kn conversion in one place, see the kn conversion hub.
Frequently asked questions
How many miles per hour are in 1 knot?
1 knot = 1.150779 mph.
What is 100 knots in miles per hour?
100 kn = 115.0779 mph.
Is converting knots to miles per hour the same as miles per hour to knots?
No — the direction changes the multiplier. The reverse conversion (1 mph = 0.8689762 kn) is on the Miles per hour to Knots page.
Related conversions
Try the ConvBolt Unit Converter for any other speed unit, browse the Speed conversions, or read our conversion guides.