Figure Size & DPI Calculator

Check image resolution and resize figures to a publication width and DPI.

Your image is not uploaded.

1. Original image

Choose or drop an image PNG, JPEG, or WebP · up to 100 MB

The selected image will appear here.

Dimensions: —
Aspect ratio: —
File: —

2. Publication settings

Publication width Unit

Target resolution DPI

Output format Filename

The aspect ratio is preserved. Transparent pixels are retained in PNG and placed on white in JPEG.

3. Result

Choose an image

No image selected

Upload an image to calculate its effective resolution.

Effective resolution: —
Publication size: —
Required pixels: —
Pixel scaling: —

The downloaded file is resized to the calculated pixel dimensions and tagged with the selected DPI.

What the result means

DPI depends on print size

The same image has a higher effective DPI when printed smaller and a lower DPI when printed larger.

Downscaling is usually safe

Reducing excess pixels is normally safe. Upscaling changes the pixel count but cannot create lost detail.

Vector figures are different

SVG and vector PDF artwork can scale without pixelation and should not be processed with this raster-image tool.

Publication requirements vary by journal. Always follow the instructions for your destination journal; for example, the Nature figure guide discusses print dimensions, vector artwork, and raster-image resolution.