Photo size reference

4×6 Photo Size: Pixels, Inches and Aspect Ratio

4 × 6 photo measures 101.6 × 152.4 mm. Its pixel dimensions change with PPI; the physical trim size does not.

Quick answer

A 4 × 6 inch photo measures 101.6 × 152.4 mm. It needs 1200 × 1800 pixels at 300 PPI, and its 2:3 aspect ratio matches many camera files.

300 PPI: 1200 × 1800 px · aspect ratio 2:3
Pixel table

4 × 6 pixels by PPI

Portrait values are rounded to the nearest whole pixel after converting the native physical dimensions.

PPIWidthHeightUse context
72288 px432 pxLayout or screen reference
96384 px576 pxLayout or screen reference
150600 px900 pxPrint / distance dependent
240960 px1440 pxPrint / distance dependent
3001200 px1800 pxDetailed print target
6002400 px3600 pxDetailed print target
Aspect fit

A natural match for 3:2 cameras

A landscape 3:2 image fills a 6 × 4 print without ratio crop. Portrait uses the same pixel values in reverse order.

Preview your framing
Quality range

Minimum depends on the target

The same 4 × 6 trim is 600 × 900 px at 150 PPI, 960 × 1440 px at 240 PPI and 1200 × 1800 px at 300 PPI.

Check an actual image
Before ordering

Check lab cropping and borders

A lab may slightly crop for edge-to-edge output. Keep faces and text away from the edge and confirm whether the product includes a border.

Change the resolution

Calculate 4 × 6 at any PPI.

Interactive calculator
pixels = millimetres ÷ 25.4 × PPI

Paper preset → pixel dimensions

Quick targets
Calculated resultsUpdates as you change the inputs
Trim sizeResult
101.6 × 152.4 mm
Trim size in inchesResult
4 × 6 in
4 × 6 at common targets
TargetWidthHeight
150 PPI600 px900 px
240 PPI960 px1440 px
300 PPI1200 px1800 px
Print setup

Trim first. Add production values second.

4 × 6 identifies the final physical format. Bleed expands the artwork beyond that edge; a safe margin moves important content inward. Those extra values depend on the print provider.

Calculate bleed and safe area →
Check before you print

Use the image, not a guess.

Run the source pixels against the exact size you plan to order.

Check an image