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Distance Conversion Calculator.

Converts a distance value between kilometers, miles, meters, and feet.

Results update live as you type.
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Your inputs

How it works

  1. 1

    Enter the numeric distance value.

  2. 2

    Select the unit you are converting from.

  3. 3

    Select the unit you want to convert to.

  4. 4

    The calculator applies the conversion factor and displays the result.

value * (from_unit == 'km' ? 1 : from_unit == 'miles' ? 1.609344 : from_unit == 'meters' ? 0.001 : 0.0003048) / (to_unit == 'km' ? 1 : to_unit == 'miles' ? 1.609344 : to_unit == 'meters' ? 0.001 : 0.0003048)

Frequently asked questions

How many kilometers are in a mile?

One mile is exactly 1.609344 kilometers.

How many feet are in a meter?

One meter is approximately 3.28084 feet.

Can I convert between any of these units?

Yes, the calculator supports conversions among kilometers, miles, meters, and feet.

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Results

Formula checked

Converted distance

0to_unit

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Estimate for general guidance only — verify important decisions with an appropriate professional.

How it works

Converts a distance value between kilometers, miles, meters, and feet.

  1. Enter the numeric distance value.
  2. Select the unit you are converting from.
  3. Select the unit you want to convert to.
  4. The calculator applies the conversion factor and displays the result.

Formulas

The math behind this calculator, written out so you can verify the result.

Conversion factor method

result = value × (factor_from / factor_to)

Each unit has a factor relative to meters: km=1000, mile=1609.344, meter=1, foot=0.3048. Divide the value's factor by the target's factor.

Example:

Input: value=10 km to miles

Calculation: 10 × (1000 / 1609.344)

Result: ≈ 6.2137 miles

Real-world use cases

Where this calculation shows up in everyday life.

Running and racing

Convert race distances like 5K, 10K, or marathon to miles for training plans.

Example: 5 km = 3.11 miles

Travel planning

Understand distances in foreign countries when signs use different units.

Example: 100 miles = 160.93 km

Construction and DIY

Convert measurements from blueprints or materials between metric and imperial.

Example: 10 meters = 32.81 feet

Tips and common mistakes

Tips

  • Remember: 1 mile ≈ 1.609 km, so miles are longer than kilometers.
  • For quick mental estimates, multiply miles by 1.6 to get kilometers.
  • To convert feet to meters, divide by 3.28.
  • Use more decimal places for precise engineering or scientific work.

Common Mistakes to Avoid

  • Confusing the direction of conversion (e.g., multiplying instead of dividing).
  • Using approximate factors when exact values are needed.
  • Forgetting to convert all measurements to the same unit before calculations.

Assumptions and limitations

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.