Does this handle bboxes that cross the antimeridian (180°/-180°)?

Not yet - this calculator assumes west is west of east in the usual sense.

Bbox to Zoom Calculator

Find the zoom level that fits a bounding box inside a given viewport size.

West

South

East

North

Viewport width (px)

Viewport height (px)

Zoom: 12

Runs entirely in your browser - nothing is sent to a server.

1
Enter the bounding box

Type west/south/east/north in decimal degrees.
2
Enter the viewport size

Type the map viewport width/height in pixels.
3
Read the zoom level

The largest integer zoom where the whole bbox still fits is computed instantly.

Does this handle bboxes that cross the antimeridian (180°/-180°)?: Not yet - this calculator assumes west is west of east in the usual sense.