# R5 | google/gemini-3.6-flash | run 1

## Prompt

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

## Response

There are exactly 160.9344 kilometers in 100 miles. This conversion uses the internationally standardized length definition established in 1959.

## Conversion Factor and Formula

The exact standard conversion factor is **1 mile = 1.609344 kilometers** [NIST Guide for SI Units](https://physics.nist.gov/cuu/pdf/sp811.pdf). 

To convert miles to kilometers, multiply the distance in miles by the conversion factor:

\[ \text{Kilometers} = \text{Miles} \times 1.609344 \]

\[ 100 \text{ miles} \times 1.609344 = 160.9344 \text{ kilometers} \]

The international yard and pound agreement defined the international yard as exactly 0.9144 meters, which translates directly to 1 mile equaling 1,609.344 meters or 1.609344 kilometers [NIST Handbook 44](https://www.nist.gov/pml/owm/publications/nist-handbooks/handbook-44).

Would you like to convert a different distance or speed measurement between imperial and metric units?
