Speed Converter
Convert between km/h, mph, m/s, knots, and feet per second instantly.
Convert Speed
All Conversions
Kilometres/hour (km/h)
100
Miles/hour (mph)
62.1371
Metres/second (m/s)
27.7778
Knots (kn)
53.9957
Feet/second (ft/s)
91.1344
Extended
Speed Limits & Travel Time
Nigerian road speed limits reference and travel time calculator
FRSC (Federal Road Safety Corps) speed limits in Nigeria
| Road Type | km/h | mph | Note |
|---|---|---|---|
| Residential street (Lagos) | 30 | 19 | Federal Road Safety Corps guideline |
| Urban road (cities) | 50 | 31 | FRSC urban limit |
| State highway | 90 | 56 | Inter-city roads |
| Federal highway (Expressway) | 120 | 75 | Lagos-Ibadan, Abuja-Kaduna |
| School zone | 25 | 16 | During school hours |
| Heavy vehicles (trucks) | 60 | 37 | Maximum for tankers/lorries |
| Motorcycle (okada) | 60 | 37 | Urban motorcycle limit |
| Tricycle (keke napep) | 40 | 25 | Urban tricycle limit |
Professional
Fuel Efficiency & Distance-Time-Speed Solver
Calculate fuel cost at different speeds and solve the distance-time-speed triangle
Estimate fuel consumption and cost at a given speed
Fuel Efficiency at 100 km/h
Est. consumption at this speed
10.50 L/100km
Fuel needed (100 km trip)
10.50 L
Trip cost
₦9,450
Cost per 100 km
₦9,450
How to Use This Converter
Enter a speed value, select the starting unit, and all equivalents are shown instantly. Useful for understanding car speedometers, aviation speeds, weather data, and international speed limits.
Key Facts
100 km/h62.1 mph = 27.8 m/s = 54.0 knots
60 mph96.6 km/h = 26.8 m/s
1 knot1.852 km/h = 1.151 mph
FAQ
The Federal Road Safety Corps (FRSC) sets speed limits: 100 km/h on highways (62 mph), 50 km/h in urban areas (31 mph), 25 km/h in school zones. Articulated trucks are limited to 80 km/h. Exceeding limits by 30+ km/h constitutes reckless driving under the FRSC regulations. Speed limit enforcement uses speed guns and fixed cameras on major routes.
A knot (kn) is a nautical mile per hour = 1.852 km/h. It's used internationally in aviation and maritime navigation because it relates directly to geographic coordinates — one nautical mile equals one minute of arc of latitude. Nigerian ports (Lagos, Apapa, Tin Can Island) and the Nigerian Maritime Administration use knots for vessel speeds.
The trip is approximately 800 km. Legal highway speed is 100 km/h, putting minimum travel time at 8 hours. In practice, the journey takes 9–12 hours due to traffic in Lagos, road conditions, checkpoints, fuel stops, and construction. Average actual speed is often 70–80 km/h over the full journey. Night driving is not recommended due to safety risks.