Convert feet per second to miles per hour

1 ft/s=0.6818mph

Use the converter below to change any feet per second value into miles per hour instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.68182

Conversion formula

Forward

miles per hour = feet per second × 0.6818

Reverse

feet per second = miles per hour × 1.46667

Example: 10 ft/s × 0.6818 = 6.81818 mph.

About both units

From

Foot per Second

ft/s

Feet per second (ft/s) is used in some US engineering, ballistics (bullet velocity) and older US physics textbooks. Typical handgun muzzle velocity: 1000–1400 ft/s. Rifle muzzle velocity: 2500–3500 ft/s.

Real-world: 9mm bullet muzzle velocity: ~1150 ft/s. .308 rifle: ~2700 ft/s. Free fall terminal velocity: ~195 ft/s.

Read full foot per second reference →

Mile per Hour

mph

Miles per hour (mph) is the standard road-speed unit in the US, UK and a few other countries. US highways typically 65–75 mph; UK motorways 70 mph. US weather reports wind speed in mph, while meteorologists also use knots.

Real-world: US interstate: 70 mph typical. UK motorway: 70 mph limit. Cycling pro speed: 25 mph. Tornado winds: 110+ mph.

Read full mile per hour reference →

Foot per Second to Mile per Hour conversion table

Common feet per second to miles per hour values for quick reference.

Foot per Second (ft/s)	Mile per Hour (mph)
1 ft/s	0.6818 mph
5 ft/s	3.40909 mph
10 ft/s	6.81818 mph
25 ft/s	17.0455 mph
50 ft/s	34.0909 mph
100 ft/s	68.1818 mph
150 ft/s	102.273 mph
200 ft/s	136.364 mph
300 ft/s	204.545 mph
500 ft/s	340.909 mph

Tips & common mistakes

Quick tips

1 ft/s = 0.3048 m/s = 1.097 km/h = 0.682 mph.
Multiplying ft/s by 0.682 gives mph.
US engineering often uses ft/s; metric countries use m/s.

Avoid these

Confusing ft/s with fps (frames per second in video/gaming).
Mixing ft/s with mph without conversion.
Using ft/s instead of m/s in international scientific contexts.

Frequently asked questions

How many miles per hour in a foot per second?

One foot per second equals 0.6818 miles per hour.

How do I convert feet per second to miles per hour?

Multiply the foot per second value by 0.6818 to get the equivalent in miles per hour.

What is 100 feet per second in miles per hour?

100 feet per second equals 68.1818 miles per hour.

Is a foot per second bigger than a mile per hour?

No. 1 foot per second equals 0.6818 miles per hour, so one foot per second is smaller.

How to convert feet per second to miles per hour without a calculator?

Multiply by 0.68 for a quick estimate; use a calculator for precise results.

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