Image Print Size Calculator

Enter pixel dimensions and PPI or load an image, compare several print-density scenarios, then check whether a chosen physical size has enough pixels.

Pixels → physical print size

Calculate how large the current raster can print at a chosen pixel density, then compare common PPI targets.

Image width (px)

Image height (px)

Print resolution (PPI)

Optional image

20 × 13.33 in50.8 × 33.87 cm

24 MPImage size

40 × 26.67 inAt 150 PPI

20 × 13.33 inAt 300 PPI

3:2Aspect ratio

PPI	Print size (in)	Print size (cm)

Inspect dimensions Aspect ratio Print size Required pixels DPI metadata Crop geometry Resize image

Target print → effective PPI

Check the actual pixel density you would get at a chosen physical size. The limiting value is the lower of horizontal and vertical PPI.

Target width (in)

Target height (in)

Planning PPI

Required pixels for target

3600×24008.64 MP @ 300 PPI

500 PPI limiting resolutionUses the lower of horizontal and vertical pixel density.

PPI describes raster pixels per physical inch. Printer hardware DPI and embedded image metadata are related concepts but are not the same quantity. Changing metadata alone does not add detail.

Print-density & target-size audit

Cross-check the source pixels against physical print size and the pixels required at a chosen print density.

PPI evidence

Reference PPI

Target width (in)

Target height (in)

Check	Width	Height	Evidence

Use the tool above, then refresh this verification.

Verification uses the visible inputs and keeps the original tool workflow intact.

Core image workflows

Use a flagship page for the highest-demand resize, compression, crop and conversion jobs; specialist image tools remain available from the full hub.

All 55 image tools

Image ResizerResize by pixels or percentage Image CompressorReduce file size with controls Image CropperCrop visually or by coordinates Image ConverterConvert JPG, PNG and WebP JPG to PNGConvert JPEG into PNG PNG to JPGExport PNG as JPEG HEIC to JPGConvert phone HEIC/HEIF photos WebP to JPGExport WebP as JPEG

Practical guide and verification

Pixels and print dimensions are linked by PPI

Print size in inches is pixel dimension divided by pixels per inch. Changing a metadata DPI/PPI tag without resampling does not create additional image detail.

Viewing distance changes requirements

A small photo held close may need more pixels per inch than a large poster viewed from several metres away. There is no single quality threshold appropriate for every print.

Common mistake

Do not confuse printer hardware DPI with image PPI. Printer dots and source-image pixels describe different parts of the printing process.

Browser-local limits

Canvas-based export is browser dependent. PNG is broadly available; JPEG/WebP quality and support can vary, and metadata may not be preserved through canvas re-encoding.