Feet to KM Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert feet to KM, multiply by 0.0003048. For example, 10 ft is 0.003048 km. One foot equals 0.0003048 km.

Use the Feet to KM Converter

Feet to KM formula and what each symbol means

km = ft × 0.0003048

Symbols used in the formula
SymbolMeaning
ftFoot
kmKilometer

Feet to KM examples

1 ft

1 ft × 0.0003048 = 0.0003048 km.

10 ft

10 ft × 0.0003048 = 0.003048 km.

100 ft

100 ft × 0.0003048 = 0.03048 km.

Feet compared with KM

One km is 3,281 times as large as one ft, so your number gets smaller when you convert feet to KM and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

About feet and KM

Foot (ft): The international foot, exactly 0.3048 metres or 12 inches. Kilometer (km): 1,000 metres, used for road distances in most countries.

Where feet to KM conversions are used

Road distances and maps use kilometres or miles, while building plans use metres, millimetres or feet. Screen sizes, tyres and clothing are usually given in inches, and body measurements in centimetres or inches.

How to calculate Feet to KM step by step

  1. Enter the value in ft (the starting unit).
  2. Multiply by 0.0003048, because 1 ft = 0.0003048 km.
  3. The product is the value in km. To go back, divide by 0.0003048 or multiply by 3,280.84.

Popular length conversions

How to read your Feet to KM result

Quick estimate: multiply by about 0.0003 to get KM from feet; this is within 1.6% of the exact factor. Between metric and imperial, the key fact is that 1 inch is exactly 2.54 cm, which makes 1 foot exactly 0.3048 m, 1 yard exactly 0.9144 m and 1 mile exactly 1,609.344 m.

FEETKM
10.0003048
20.0006096
50.001524
100.003048
200.006096
500.01524
1000.03048
1,0000.3048

KM to Feet: quick table

KMFEET
13,280.84
516,404.2
1032,808.4
2582,021
50164,042
100328,084
250820,210
5001,640,420

Common mistakes when calculating Feet to KM

  • Mixing the international foot with the older US survey foot: the difference is about 2 parts per million and only matters in large land surveys.
  • Dividing when you should multiply: from ft to km multiply by 0.0003048; from km to ft divide by 0.0003048.

Feet to KM FAQ

How many km are in 1 ft?

1 ft equals 0.0003048 km.

How many ft are in 1 km?

1 km equals 3,280.84 ft.

Is 1 ft = 0.0003048 km an exact conversion?

Yes. The foot and the kilometer are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 0.0003048 is just that ratio shown to 7 significant figures.

What is a kilometer (km)?

1,000 metres, used for road distances in most countries.

How can I estimate feet to KM in my head?

Quick estimate: multiply by about 0.0003 to get KM from feet; this is within 1.6% of the exact factor.

What is 3 ft in KM?

3 ft = 0.0009144 km (since 3 × 0.0003048).

What is 30 ft in KM?

30 ft = 0.009144 km (since 30 × 0.0003048).

What is 150 ft in KM?

150 ft = 0.04572 km (since 150 × 0.0003048).

How many decimals should I keep when converting ft to km?

Match the precision of your original measurement. For example, 0.003048 km rounds to 0.00305 km at 3 significant figures; keep more digits only for engineering or scientific work.

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Method, review and disclaimer

Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI base units