Example

Converting 100 Kilometers to Miles Using a Cross-System Conversion Factor

To determine how many miles correspond to 100100 kilometers, use the approximate equivalence 1 mile1.61 kilometers1 \text{ mile} \approx 1.61 \text{ kilometers}.

  1. Start with the given measurement: 100 kilometers100 \text{ kilometers}.
  2. Multiply by a unit conversion factor relating kilometers and miles: 100 kilometers1 mile1.61 kilometers100 \text{ kilometers} \cdot \frac{1 \text{ mile}}{1.61 \text{ kilometers}}.
  3. Cancel the matching unit: The "kilometers" labels divide out, leaving only miles.
  4. Simplify: 100 miles1.61\frac{100 \text{ miles}}{1.61}.
  5. Divide: 100÷1.6162100 \div 1.61 \approx 62 miles.

The next rest stop is approximately 6262 miles away. This example illustrates a metric-to-US length conversion: because 11 mile spans more distance than 11 kilometer, the numerical result in miles is smaller than the original value in kilometers.

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Updated 2026-04-21

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