Print Size Calculator

Convert between pixels and print size at any DPI. Enter an image's pixel dimensions to see how large it prints in cm or inches, or start from a print size and DPI to get the pixels you need. Knows the DIN A series from A0 to A10 and tells you whether your image is sharp enough for each.

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Image size

Image · Drop, paste or click to read its pixel size.

Resolution

DPI

3,000 × 2,000 px at 300 DPI prints at

25.4 × 16.93 cm10 × 6.67 in

Megapixels: 6.00
Aspect: 3:2

Your image on standard paper

How sharply 3,000 × 2,000 px fills each size edge to edge, and how much would be cropped where the shapes differ.

Paper	Size	Effective DPI	Verdict	Crop needed
A0	84.1 × 118.9 cm	60	Poor	5.7%
A1	59.4 × 84.1 cm	86	Poor	5.6%
A2	42 × 59.4 cm	121	Poor	5.7%
A3	29.7 × 42 cm	171	Fair	5.7%
A4	21 × 29.7 cm	242	Good	5.7%
A5	14.8 × 21 cm	343	Excellent	5.4%
A6	10.5 × 14.8 cm	484	Excellent	6%
A7	7.4 × 10.5 cm	686	Excellent	5.4%
A8	5.2 × 7.4 cm	977	Excellent	5.1%
A9	3.7 × 5.2 cm	1,373	Excellent	6.3%
A10	2.6 × 3.7 cm	1,954	Excellent	5.1%
Letter	21.59 × 27.94 cm	235	Good	13.7%
Legal	21.59 × 35.56 cm	214	Good	8.9%

Pixels needed for each paper size

Edge-to-edge pixel dimensions for the common print resolutions. 300 DPI is the usual photo-print target.

Paper	Size	150 DPI	300 DPI	600 DPI
A0	84.1 × 118.9 cm	4,967 × 7,022 px	9,933 × 14,043 px	19,866 × 28,087 px
A1	59.4 × 84.1 cm	3,508 × 4,967 px	7,016 × 9,933 px	14,031 × 19,866 px
A2	42 × 59.4 cm	2,480 × 3,508 px	4,961 × 7,016 px	9,921 × 14,031 px
A3	29.7 × 42 cm	1,754 × 2,480 px	3,508 × 4,961 px	7,016 × 9,921 px
A4	21 × 29.7 cm	1,240 × 1,754 px	2,480 × 3,508 px	4,961 × 7,016 px
A5	14.8 × 21 cm	874 × 1,240 px	1,748 × 2,480 px	3,496 × 4,961 px
A6	10.5 × 14.8 cm	620 × 874 px	1,240 × 1,748 px	2,480 × 3,496 px
A7	7.4 × 10.5 cm	437 × 620 px	874 × 1,240 px	1,748 × 2,480 px
A8	5.2 × 7.4 cm	307 × 437 px	614 × 874 px	1,228 × 1,748 px
A9	3.7 × 5.2 cm	219 × 307 px	437 × 614 px	874 × 1,228 px
A10	2.6 × 3.7 cm	154 × 219 px	307 × 437 px	614 × 874 px
Letter	21.59 × 27.94 cm	1,275 × 1,650 px	2,550 × 3,300 px	5,100 × 6,600 px
Legal	21.59 × 35.56 cm	1,275 × 2,100 px	2,550 × 4,200 px	5,100 × 8,400 px

About the Print Size Calculator Tool

This tool connects the three numbers that decide how a digital photo prints: pixel dimensions, physical size and DPI. Fix any two and it solves for the third. Enter your image's pixels and a resolution to see how large it prints in cm, mm or inches, start from a print size to get the pixels you need, or enter both to check the effective DPI you would actually get.

It also knows the full DIN A series from A0 to A10, plus US Letter and Legal. One table rates your image against every size with a color-coded verdict, from excellent at 300 DPI and up to poor below 150, and shows how much cropping each paper's shape would cost. Another lists the exact pixels every size needs at 150, 300 and 600 DPI, including the classic A4 at 300 DPI, which is 2480 × 3508 pixels.

What you can do

Convert pixels to print size in cm, mm or inches at any DPI.
Work out the pixels you need for a given print size and resolution.
Check the effective DPI of an image printed at a specific size.
See whether a photo is sharp enough for A4, A3 or any other DIN A size.
Look up the pixel dimensions of every paper size at 150, 300 and 600 DPI.
Read a photo's pixel dimensions and megapixels by dropping the file in.
Spot aspect-ratio mismatches and see how much a paper size would crop.

How to use the Print Size Calculator

1Pick what to solve for: print size, pixels needed or effective DPI.
2Fill in the other two values. DPI presets and a paper-size picker save typing, or drop an image to read its pixels.
3Read the result, the megapixel and aspect-ratio summary, and the verdict for every standard paper size below.

What DPI do you need?

DPI (dots per inch, often called PPI for images) is how densely your pixels are spread over the paper. 300 DPI is the standard for photo prints viewed in hand, and the tool rates that excellent. Around 200 DPI still looks good at arm's length, and 150 DPI is fine for posters seen from across a room. Below 150 DPI individual pixels start to show up close. The verdicts in the paper table use exactly these thresholds, so a poster-sized print marked fair can still be the right call for its viewing distance.

Why the crop column matters

DIN A paper has a fixed shape, roughly 1:1.41, while most cameras shoot 3:2 or 4:3. When the shapes differ, printing edge to edge means cutting part of the image away. The crop column tells you how many of your pixels would be lost to fill each size, so you can decide between cropping, leaving white borders or picking a different format before you order the print. A 3:2 photo on A4 loses about 6% of its pixels, while a square image loses nearly 30%.

Preparing a file for printing

Once you know the pixels a print needs, prepare the file to match. If your image has more than enough resolution, you can compress it with the JPG Image Compressor before sending it to a print service, and the Image Converter turns formats a lab will not accept, like WebP or HEIC, into JPG or PNG. If the numbers say your image is too small, printing smaller or viewing from further away beats upscaling in most cases.

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