Speed Converter
Convert between miles per hour (mph), kilometers per hour (km/h), knots, meters per second (m/s), and more. Includes pace units for runners (min/mi, min/km). Free, fast, and accurate speed conversions.
Enter a speed to see conversions
Reference Table
| MPH | KM/H | M/S | Knots |
|---|---|---|---|
| 1 | 1.6093 | 0.44704 | 0.86898 |
| 5 | 8.0467 | 2.2352 | 4.3449 |
| 10 | 16.093 | 4.4704 | 8.6898 |
| 20 | 32.187 | 8.9408 | 17.38 |
| 30 | 48.28 | 13.411 | 26.069 |
| 50 | 80.467 | 22.352 | 43.449 |
| 60 | 96.561 | 26.822 | 52.139 |
| 70 | 112.65 | 31.293 | 60.828 |
| 100 | 160.93 | 44.704 | 86.898 |
| 120 | 193.12 | 53.645 | 104.28 |
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How to Use
- 1 Enter your speed value in the input field. You can type any positive number, including decimals (e.g., 60, 100.5, 26.2).
- 2 Select your source unit from the "From" dropdown. Choose from 12 speed units including mph, km/h, knots, m/s, and pace units like min/mi.
- 3 Select your target unit from the "To" dropdown. Use the swap button to quickly reverse the conversion direction.
- 4 View your result instantly along with common equivalents in mph, km/h, m/s, and knots. The speed context shows real-world comparisons.
- 5 Use quick speed buttons (10, 30, 60, 100, 120) to test common speeds, or copy your result with one click.
Pro Tip: For runners, pace units (min/mi and min/km) work inversely - a lower number means faster speed! A 6:00 min/mi pace equals about 10 mph.
Frequently Asked Questions
How do I convert mph to km/h?
To convert miles per hour (mph) to kilometers per hour (km/h), multiply by 1.60934. For example, 60 mph equals about 96.6 km/h. Our converter does this calculation instantly - just enter your mph value and select km/h as the target unit. The formula is: km/h = mph × 1.60934.
What are knots and when are they used?
Knots are a unit of speed used in maritime and aviation contexts. One knot equals one nautical mile per hour (approximately 1.15 mph or 1.85 km/h). Knots are preferred in navigation because nautical miles are directly related to latitude/longitude coordinates, making calculations easier for pilots and sailors.
What is Mach speed?
Mach is a ratio comparing speed to the speed of sound. Mach 1 equals the speed of sound (approximately 767 mph or 1,235 km/h at sea level). Mach 2 is twice the speed of sound. This unit is commonly used for aircraft speed. The actual speed varies with altitude and temperature since sound travels differently in different conditions.
How do pace units (min/mi, min/km) work?
Pace units measure time per distance rather than distance per time. A 10:00 min/mi pace means it takes 10 minutes to travel one mile. Runners often prefer pace because it directly relates to their training. Note that pace and speed are inversely related - a faster pace (lower number) means higher speed. To convert: speed (mph) = 60 ÷ pace (min/mi).
What's the difference between m/s and km/h?
Both are metric units but measure different scales. Meters per second (m/s) is the SI base unit for speed, commonly used in physics and science. Kilometers per hour (km/h) is more practical for everyday use like driving. To convert: km/h = m/s × 3.6. For example, 10 m/s equals 36 km/h.