Speed Converter
Convert between speed units
50.8
cm/s
rate：1 in/s = 2.54 cm/s
Results in all units
20 in/s| Unit | Symbol | Value |
|---|---|---|
| Metric | ||
| Meters/second | m/s | 0.508 |
| Kilometers/hour | km/h | 1.8288 |
| Centimeters/second | cm/s | 50.8 |
| Millimeters/second | mm/s | 508 |
| Kilometers/second | km/s | 0.000508 |
| Meters/minute | m/min | 30.48 |
| Imperial / Nautical | ||
| Miles/hour | mph | 1.136364 |
| Feet/second | ft/s | 1.666667 |
| Feet/minute | ft/min | 100 |
| Inches/second | in/s | 20 |
| Yards/second | yd/s | 0.555556 |
| Knots | kn | 0.987473 |
| Special | ||
| Mach (sea level) | Ma | 0.001493 |
| Speed of light | c | 1.694506e-9 |
Popular Speed Conversions
Recent Conversions
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20 Inches/second
→
50.8 Centimeters/second
353 Millimeters
→
1,000.629921 Points
30 Centimeters per second squared
→
0.030591 Standard gravity
81 Millifarads
→
81,000 Microfarads
910 Square decimeters
→
9,100,000 Square millimeters
88 Millinewtons
→
8.973503 Gram force
73 Picofarads
→
0.000073 Microfarads
100 Picofarads
→
1e-10 Farads
64 Minutes
→
3,840 Seconds
20 Ton force (US)
→
177.928865 Kilonewtons
Trending Conversions
Just Converted
78 Kilometers/second
→
15,354,330.7087 Feet/minute
20 Inches/second
→
50.8 Centimeters/second
30 Feet/second
→
32.9184 Kilometers/hour
2 Kilometers/hour
→
109.3613 Feet/minute
75 Millimeters/second
→
14.7638 Feet/minute
97 Mach (sea level)
→
1,980,487.8 Meters/minute
82 Millimeters/second
→
2.7352e-10 Speed of light
69 Feet/second
→
0.021 Kilometers/second
6 Yards/second
→
5.4864 Meters/second
35 Kilometers/hour
→
1,913.8233 Feet/minute
Common Scenarios
Speed conversion is closely linked to transportation, aviation, navigation, and sports. In China, speed limits use kilometers per hour (km/h), while in the US and UK, speedometers often use miles per hour (mph). In navigation and aviation, ships and aircraft use "knots."
History & Background
The elegant unit "knot" originated in the great age of sail. Sailors threw a wooden board tied to a rope with knots over the stern and counted the knots that slipped into the water over a set time to calculate speed.
Conversion Details
Speed conversion is based on meters per second (m/s).
Common conversions: 1 m/s = 3.6 km/h, 1 mph ≈ 1.609 km/h, 1 knot = 1.852 km/h.