---
title: longitudeDelta
framework: mapkitjs
role: symbol
role_heading: Instance Property
path: mapkitjs/coordinatespan/longitudedelta
---

# longitudeDelta

The amount of east-to-west distance (in degrees) to display for the map region.

## Declaration

```data
longitudeDelta: number;
```

## Discussion

Discussion The number of kilometers spanned by a longitude range varies based on the current latitude. For example, one degree of longitude spans a distance of approximately 111 kilometers (69 miles) at the equator but shrinks to 0 kilometers at the poles.

## See Also

### Defining the span

- [latitudeDelta](mapkitjs/coordinatespan/latitudedelta.md)