Feet to Kilometers (ft to km) Converter & Formula

1 foot equals 0.0003048 kilometers — multiply the number of feet by 0.0003048 to convert to kilometers. Because a foot is a small imperial unit and a kilometer is a large metric one, the result is always a small decimal. ByteTools applies the exact factor as you type, so you never have to round by hand.

The formula

To convert feet to kilometers, multiply by the fixed factor 0.0003048:

km = ft × 0.0003048

For example, 500 feet × 0.0003048 = 0.1524 kilometers. To reverse it, divide by 0.0003048 (or multiply kilometers by 3280.839895).

Conversion table

How to convert online

1. Type the number of feet into the first box.
2. Read the kilometers result instantly in the second box.
3. Type a kilometer value instead to convert back to feet — it works both ways.

Use the Foot to Kilometer Converter — free and instant in your browser.

Where this conversion is used

Feet-to-kilometer conversions come up in travel and mapping, aviation altitude reporting, surveying and running distances, and any project that bridges US customary measurements with the metric system used almost everywhere else. Because 1,000 feet is only about 0.3 km, the conversion is handy whenever imperial plans meet metric maps.

FAQ

How many kilometers are in a foot?

One foot equals 0.0003048 kilometers. So 10 feet is 0.003048 km and 100 feet is 0.03048 km.

What is the formula to convert feet to kilometers?

Multiply feet by 0.0003048: km = ft × 0.0003048. The converter applies this exact factor automatically.

How do I convert kilometers back to feet?

Divide by 0.0003048, or multiply kilometers by 3280.839895. For example, 1 km = 3280.84 feet.

Is the conversion exact?

Yes. One foot is defined as exactly 0.3048 meters, which is exactly 0.0003048 kilometers, so the factor is precise, not an approximation.

Related converters

• Kilometer to Foot Converter
• Foot to Meter Converter
• Foot to Millimeter Converter
• Foot to Mile Converter

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