Estimate travel duration from road distance and average speed using uniform motion math.
Formula
time (hours) = distance_km ÷ speed_kmh
The result is formatted into human-readable hours and minutes. Example: 150 km at 75 km/h → 2 hours exactly.
When to use it
Rough ETA planning for highway trips, classroom physics exercises, or logistics back-of-envelope scheduling when traffic is light and steady.
Limitations
Assumes constant speed — no stops, congestion, toll queues, or elevation changes. Urban driving rarely sustains the entered average. Use navigation apps for real-world routing; this is a straight-line time estimate, not map-aware routing.