converters
Speed & Velocity Converter
Convert speed limits, wind speeds, aviation knots, and projectile velocities between metric, imperial, and nautical standards.
Calculated locally in browser.
Unit Converters
Speed & Velocity Converter
km/h
mph
1 Kilometers per hour = 0.621371 Miles per hour
Quick Reference Conversion Table (km/h to mph)
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 30 km/h | 18.641136 mph |
| 50 km/h | 31.06856 mph |
| 80 km/h | 49.709695 mph |
| 100 km/h | 62.137119 mph |
| 120 km/h | 74.564543 mph |
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How to Use Speed & Velocity Converter
1
Enter Speed
Input velocity number.
2
Select Units
Choose starting unit (e.g. MPH) and target unit (e.g. KM/H).
3
Copy Result
Copy the converted speed.
About Speed & Velocity Converter
Converts input velocity to base SI meters per second (m/s) before applying target unit scaling multipliers.
Supported Formats
MetricImperialNautical
Operational Limits
- •Values must be positive
Key Features
- Supports km/h, mph, m/s, knots, ft/s, and Mach
- Instant unit swap button
- Exact mathematical conversion formula
- High-precision calculations
Frequently Asked Questions
60 mph is equal to approximately 96.56 km/h.