How many kilometers is 1 foot?

One foot equals exactly 0.0003048 km. For quick estimation, divide feet by 3,281 to get kilometers.

How many feet are in 1 kilometer?

One kilometer contains approximately 3,280.84 feet. This is about 3,281 feet for practical purposes.

How do I convert airplane altitude from feet to km?

Multiply feet by 0.0003048. For example, 35,000 feet x 0.0003048 = 10.668 km. Or divide by 3,281: 35,000 / 3,281 = 10.67 km.

Feet to Kilometers (ft to km) Converter

1 ft = 0.0003 km

1 Foot equals 0.0003 Kilometers (1 ft = 0.0003 km). Convert Feet to Kilometers with formula, table, and examples.

One foot equals exactly 0.0003048 kilometers. This conversion is commonly needed when expressing aircraft altitude (in feet) as a metric ground distance, or when comparing American building heights with metric geographic features. About 3,281 feet make one kilometer.

How to Convert Feet to Kilometers

km = ft × 0.0003048

Multiply the value in Feet by 0.0003048

Take your value in Feet
Multiply by 0.0003048
Read the result in Kilometers

Common Feet to Kilometers Conversions

Feet (ft)	Kilometers (km)	Status
1 ft	0.0003 km
5 ft	0.0015 km
10 ft	0.003 km
50 ft	0.0152 km
100 ft	0.0305 km
500 ft	0.1524 km
1,000 ft	0.3048 km
3,281 ft	1 km
5,000 ft	1.524 km
5,280 ft	1.6093 km
10,000 ft	3.048 km
50,000 ft	15.24 km
100,000 ft	30.48 km

Good to Know About Feet to Kilometers Conversion

Aviation uses feet for altitude worldwide, even in metric countries. A pilot saying 'flight level 350' means 35,000 feet (10.67 km). This is one of the most persistent non-metric conventions in international transportation.

Feet to Kilometers: What You Need to Know

A commercial airplane at 35,000 feet cruises at 10.668 km altitude. Mount Everest at 29,032 feet is 8.849 km. The Willis Tower at 1,451 feet is 0.442 km. A mile (5,280 feet) is 1.609 km. This conversion bridges American altitude and height measurements with the metric kilometer used worldwide.

What is a Foot? ft

An imperial unit of length equal to 12 inches or 0.3048 meters. Used in the US and UK for height, altitude, and construction.

Imperial Us-customary height altitude real estate

Learn more about Foot →

What is a Kilometer? km

A metric unit of length equal to 1000 meters. The standard unit for measuring road distances and geographic distances in most countries.

Metric road distances geography running

Learn more about Kilometer →

Going the other way? Use our Kilometers to Feet converter.

Feet to Kilometers FAQ

One foot equals exactly 0.0003048 km. For quick estimation, divide feet by 3,281 to get kilometers.
One kilometer contains approximately 3,280.84 feet. This is about 3,281 feet for practical purposes.
Multiply feet by 0.0003048. For example, 35,000 feet x 0.0003048 = 10.668 km. Or divide by 3,281: 35,000 / 3,281 = 10.67 km.

Non-Frequently Asked Questions About Feet to Kilometers

Questions nobody should ask - but someone did.

A 5K (5 km) is 16,404.2 feet. That is 5,468 yards or about 54.7 football fields. Runners who think in feet would find '16,404 feet' much more intimidating than '5K.' The metric version sounds shorter. It is not.
Most countries use feet for aviation altitude (35,000 feet = 10.668 km). China and Russia use meters. Nobody uses kilometers for altitude. Saying 'we are cruising at 10.7 kilometers' would terrify American passengers who think in feet.
Everest is 29,032 feet or 8.849 km. Same height, different numbers. But '29,032' sounds more impressive than '8.849' because bigger numbers feel bigger. Mountaineers use both, depending on which country's expedition they joined.