Unit Conversion

Speed Converter

Convert km/h, mph, m/s, knots, ft/s and cm/s instantly. See running pace, journey time, distance covered and exact conversion steps in one clear tool.

Speed

Converted speed

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All equivalent values

Formula and calculation

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Conversions use exact metre, mile, foot and nautical-mile definitions. Pace is time per distance, so it cannot be calculated by a simple speed multiplier.

Try an example

Running pace

Minutes per kilometre (min/km)—
Minutes per mile (min/mi)—

Distance and travel time

Time needed—
Distance covered—

Times for common distances

Distance over time

mph to km/h and km/h to mph

Road speeds usually use miles per hour or kilometers per hour depending on country.

  • 1 mph = 1.609344 km/h.
  • 1 km/h = 0.621371 mph.
  • 60 mph = 96.56 km/h.

m/s, knots, and ft/s

Technical formulas, aviation, marine speed, and physics examples often use different speed units.

  • 1 m/s = 3.6 km/h.
  • 1 knot = 1 nautical mile per hour.
  • 1 ft/s = 0.3048 m/s.

Travel, sport, and physics uses

Use the result when comparing vehicle speeds, race pace, treadmill settings, wind speed, and motion problems.

  • Use km/h or mph for road travel.
  • Use m/s for physics and engineering formulas.
  • Use knots for marine and aviation speed.

Speed Converter FAQ

How do I convert mph to km/h?

Multiply miles per hour by 1.609344 to get kilometers per hour.

How do I convert km/h to mph?

Multiply kilometers per hour by 0.621371 to get miles per hour.

How do I convert m/s to km/h?

Multiply meters per second by 3.6.

What is a knot?

A knot is one nautical mile per hour, commonly used in marine and aviation contexts.

Is speed the same as velocity?

Speed is magnitude only. Velocity includes direction.

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Answer-first Speed Converter pages

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