One nautical mile is equal to **1.853 kilometers**. This is a standard unit used mainly in **sea and air navigation** to measure distances.

The reason we use nautical miles instead of regular miles or kilometers in navigation is because nautical miles are based on the **Earth’s shape**. One nautical mile equals **one minute of latitude** on the Earth. This makes it easier for sailors and pilots to calculate distances on a map or globe.

To make it simple:
- 1 **nautical mile = 1.853 kilometers**
- 1 **nautical mile = about 1.1508 regular (statute) miles**

Nautical miles are very important in areas like shipping, flying, and military operations. For example, if a ship travels 10 nautical miles, that means it has traveled 18.53 kilometers.

People often get confused because the number is close to other values, like 1.6 or 1.9, but the correct and exact conversion is **1.853 kilometers**.

So if you ever face this question in a test or quiz, just remember:
**1 nautical mile = 1.853 kilometers**. This is the right and official answer used worldwide by navigators and in international laws.