LensCalc

Print Size Calculator

How big can you print this file?

Width (px)

Height (px)

Print DPI

Print Size

20 x 13.3 in

In Centimetres: 50.8 x 33.9 cm
Max at 150 DPI: 40.0 x 26.7 in

What you entered

Width (px): 6000Height (px): 4000Print DPI: 300

1
Print width
6,000 px / 300 DPI= 20 in
2
Print height
4,000 px / 300 DPI= 13.3333 in
3
In centimetres
20 x 2.54, 13.3333 x 2.54= 50.8 x 33.8667 cm
4
Largest acceptable print at 150 DPI
6,000/150 x 4,000/150= 40.0 x 26.7 in

Result

Print Size: 20 x 13.3 in

Maximum print size by resolution and DPI

Print dimensions are pixel dimensions divided by the print resolution. 300 DPI is the standard for prints held at reading distance.

Image	DPI	Print size (inches)	Print size (cm)	Max at 150 DPI
1920 x 1080	300	6.4 x 3.6 in	16.3 x 9.1 cm	12.8 x 7.2 in
4000 x 3000	300	13.3 x 10.0 in	33.9 x 25.4 cm	26.7 x 20.0 in
6000 x 4000	300	20.0 x 13.3 in	50.8 x 33.9 cm	40.0 x 26.7 in
6000 x 4000	240	25.0 x 16.7 in	63.5 x 42.3 cm	40.0 x 26.7 in
6000 x 4000	150	40.0 x 26.7 in	101.6 x 67.7 cm	40.0 x 26.7 in
8256 x 5504	300	27.5 x 18.3 in	69.9 x 46.6 cm	55.0 x 36.7 in

Large prints are viewed from further away, so they need fewer pixels per inch. 300 DPI suits anything held in the hand, 150 DPI is fine for a wall print, and billboards run well under 50 DPI.

300 DPI is the quality benchmark

Photo labs treat 300 dots per inch as the standard for prints viewed up close, because that is roughly the limit of what the eye resolves at reading distance. A 6000x4000 file prints beautifully at 20x13 inches and starts to soften beyond it.

Big prints can use fewer DPI

Viewing distance scales with print size — nobody presses their nose to a billboard. Large wall prints hold up fine at 150 DPI and posters at 100, which is why the same file that maxes out at 20 inches for an album print can cover 40 inches on a wall.

Frequently asked questions

My image is 4000×3000 pixels — how big can I print at 300 DPI?

4000 ÷ 300 = 13.3 inches wide, 3000 ÷ 300 = 10 inches tall. That's a clean 13x10 inch print at full quality — just over A4 paper size.

How is the print size calculator different from the megapixel calculator?

The megapixel calculator tells you total pixel count from dimensions. The print size calculator divides those pixel dimensions by a DPI target to give physical print dimensions — it answers 'how big can I print?' rather than 'how many pixels do I have?'

Can I print larger than what 300 DPI allows?

Yes. For wall prints viewed from 3+ feet away, 150 DPI looks sharp. At that resolution, a 4000×3000 image prints at 26.7×20 inches. Billboards use as low as 15-30 DPI because viewing distance is measured in yards.