# R5 | meta/muse-spark-1.1 | run 1

## Prompt

How many kilometers are in 100 miles? Show the conversion factor and cite a source for it.

## Response

The conversion factor is fixed — I'll pull a cited source and calculate 100 miles in kilometers.

100 miles is about **160.93 kilometers**.

The exact conversion uses 1 mile = 1.609344 km, so 100 miles × 1.609344 = 160.9344 km. In everyday use this is rounded to 1.60934 km per mile.

## Conversion Factor

The internationally accepted factor is:

**1 mi = 1.609344 km** [Inch Calculator](https://www.inchcalculator.com/convert/mile-to-kilometer/)

Which gives the formula:

**kilometers = miles × 1.609344** [Inch Calculator](https://www.inchcalculator.com/convert/mile-to-kilometer/)

A commonly rounded version used in education is:

**1 mile = 1.60934 kilometers** [BrightChamps](https://brightchamps.com/en-us/math/measurement/miles-to-kilometers)

**Kilometers = Miles × 1.60934** [BrightChamps](https://brightchamps.com/en-us/math/measurement/miles-to-kilometers)

## Calculation for 100 miles

Using the exact factor:
\[ 100 \times 1.609344 = 160.9344 \text{ km} \]

Using the rounded factor:
\[ 100 \times 1.60934 = 160.934 \text{ km} \]

Both round to **~160.9 km**, or **~161 km** for a quick estimate.

Do you want the result converted back to meters or to track it for a longer driving distance?
