Enter your image pixels and intended print size. See the real effective PPI, including what changes when you fit the whole image or crop to fill.
01 / CALCULATECalculations run in this browser
Check print fit
Start with numbers, or load an image to fill the pixel dimensions automatically.
Image dimensions
Finished print
Quick sizes
Artwork that must extend past the trim edge, in the same unit as the finished print. Common requests are 3 mm or 0.125 in — always use your printer’s template.
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Move the crop to protect important details.
PPI measures image pixels at final print size. A printer’s ink DPI is different.
LIVE RESULTWaiting for calculation
—PPI at this placement
Print area previewWaiting for calculation
YOUR IMAGE
Image on paper
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Image aspect ratio
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Margins or crop
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Pixels to fill at target
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Pixels incl. bleed
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Largest print at target
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Largest print keeps this print aspect ratio and placement mode. “Pixels to fill” covers the finished trim size; enter your printer’s bleed above for the file size including bleed. Focus, compression, paper and printer settings also affect quality.
HOW TO READ THIS
The DPI tag alone cannot tell you if a print will look sharp.
A 3000 × 2000 pixel image contains the exact same detail whether its file tag says 72 or 300 PPI. What dictates print clarity is effective resolution: how many image pixels are distributed across each physical inch of paper.
For a 10 × 8 inch print, this 3000 × 2000 image can fit uncropped with top/bottom margins at 300 PPI. Filling the entire sheet requires cropping the sides and reduces effective density to 250 PPI.
Check the minimum pixel dimensions required for common photo prints at gallery quality (300 PPI), standard photo quality (240 PPI), and large format viewing (150 PPI).
Print Size
Aspect Ratio
300 PPI (Fine Art)
240 PPI (Standard)
150 PPI (Large Wall Art)
4 × 6 in (10.2 × 15.2 cm)
3:2
1200 × 1800 px
960 × 1440 px
600 × 900 px
5 × 7 in (12.7 × 17.8 cm)
7:5
1500 × 2100 px
1200 × 1680 px
750 × 1050 px
8 × 10 in (20.3 × 25.4 cm)
5:4
2400 × 3000 px
1920 × 2400 px
1200 × 1500 px
8.5 × 11 in (US Letter)
1.29:1
2550 × 3300 px
2040 × 2640 px
1275 × 1650 px
11 × 14 in (27.9 × 35.6 cm)
14:11
3300 × 4200 px
2640 × 3360 px
1650 × 2100 px
12 × 18 in (30.5 × 45.7 cm)
3:2
3600 × 5400 px
2880 × 4320 px
1800 × 2700 px
16 × 20 in (40.6 × 50.8 cm)
5:4
4800 × 6000 px
3840 × 4800 px
2400 × 3000 px
24 × 36 in (61.0 × 91.4 cm)
3:2
7200 × 10800 px
5760 × 8640 px
3600 × 5400 px
A4 (21.0 × 29.7 cm)
1:√2
2481 × 3508 px
1985 × 2807 px
1241 × 1754 px
A3 (29.7 × 42.0 cm)
1:√2
3508 × 4961 px
2807 × 3969 px
1754 × 2481 px
VISUAL ACUITY SCIENCE
The viewing distance principle: Why 300 PPI isn't always necessary
A one-arcminute visual-acuity assumption gives a useful estimate for how dense image pixels need to be at a given viewing distance. At 12 inches, the estimate is about 287 PPI. Real perception also depends on eyesight, contrast, paper, lighting, and the image itself.
At 5 feet, the same estimate is about 57 PPI. Larger prints are usually viewed farther away, so they may need fewer image pixels per inch than a photo held in the hand. Confirm the target with the actual printer and viewing conditions.
One-arcminute estimate: PPI ≈ 3438 ÷ viewing distance in inches. This is a viewing model, not a print-service specification.
Viewing Distance
Example use
One-arcminute estimate
10 to 14 inches
Photo albums, books
246–344 PPI
2 to 3 feet
Small posters
96–143 PPI
4 to 6 feet
Wall art
48–72 PPI
10 feet
Large signage
29 PPI
30 feet
Distant signage
10 PPI
Three things to check before printing
01
Count the pixels
Image width and height in pixels represent the total available visual information. Inspect them directly from your file with our DPI checker.
02
Set the finished size
Enter the exact dimensions the printer will place on paper, excluding extraneous matting or border frames.
03
Choose fit or fill
Fit keeps the full photo without cropping, potentially leaving margins. Fill covers the entire print area, cropping edges where aspect ratios differ.
COMMON QUESTIONS
Print resolution, without the guesswork
Is a 72 DPI image too small to print?
The number in the file header alone cannot answer that. A 3000 × 2000 pixel image contains the exact same pixel detail whether its file tag says 72 or 300 PPI. Enter your intended print dimensions to calculate its true effective PPI on paper.
How large can 3000 × 2000 pixels print at 300 PPI?
Without cropping, its printable area is approximately 10 × 6.67 inches (25.4 × 16.9 cm). On a standard 10 × 8 inch photo sheet, that leaves 1.33 inches of total margin. Filling the 10 × 8 area instead crops the sides and lowers effective density to 250 PPI.
How many pixels do I need for an 8 × 10 inch print at 300 PPI?
For an uncropped 8 × 10 inch print at 300 PPI, you need exactly 2400 × 3000 pixels (7.2 megapixels). If your photo has a 3:2 camera aspect ratio (such as 2400 × 3600 px), you must crop 600 pixels off the length to fit the 4:5 paper ratio.
Will changing a file to 300 DPI make it sharper?
No. Modifying the density metadata header changes only the default physical size suggested to layout software, not the image detail or pixel count. The DPI changer is useful when a print service requires a 300 DPI tag, but check effective PPI at placed size first.