Pixels to CMAt Any DPI

Convert pixels to centimetres and back at any DPI — the math behind every metric print size.

Free · no sign-up · no watermark

Custom DPI

PixelsCentimetres

1,920 px = 16.26 cm (162.6 mm) at 300 DPI

Common:

Need the actual file resized? Resize this image for print →

How it works

Enter your pixels
Type the pixel width of your image (height too, if you need both).
Pick your DPI
300 for photo prints, 150 for large format — or type any other DPI.
Read the centimetres
cm = pixels ÷ DPI × 2.54. At 300 DPI, 1920 pixels print exactly 16.26 cm wide.

Pixel sizes and their print sizes in centimetres

Print size in cm = pixels ÷ DPI × 2.54. Computed for the three most common output densities.

Pixels	@ 96 DPI	@ 150 DPI	@ 300 DPI
Full HD · 1920×1080	50.8 × 28.6	32.5 × 18.3	16.3 × 9.1
4K UHD · 3840×2160	101.6 × 57.2	65.0 × 36.6	32.5 × 18.3
A4 portrait · 2480×3508	65.6 × 92.8	42.0 × 59.4	21.0 × 29.7
A3 portrait · 3508×4961	92.8 × 131.2	59.4 × 83.9	29.7 × 42.0
12 MP photo · 4000×3000	105.8 × 79.4	67.7 × 50.8	33.9 × 25.4

Frequently asked questions

How do you convert pixels to cm?: Divide the pixels by the DPI to get inches, then multiply by 2.54: cm = pixels ÷ DPI × 2.54. At 300 DPI, 1920 pixels print 16.26 cm wide.
How many pixels is 1 cm?: It depends on the DPI. At 300 DPI one centimetre is about 118 pixels; at 150 DPI about 59; at 96 DPI about 38.
How do I convert px to mm?: The same math with a different unit: mm = pixels ÷ DPI × 25.4. At 300 DPI, 1920 pixels print 162.6 mm. The result above shows the mm value next to the cm value.
How many pixels is A4 in cm?: A4 is 21 × 29.7 cm. At 300 DPI that is 2480 × 3508 pixels.
Should I use cm or inches for printing?: Use whatever your print shop asks for. Metric sizes are standard across Europe, Australia and most of Asia; US shops usually ask for inches. The math is the same either way.
Does converting pixels to cm change my image?: No. The converter only does the math in your browser. Print Resize is the tool that rebuilds the image into a file at that size.

Related tools

Pixels to Inches

The same converter in inches, for US print sizes.

Print Size Calculator

Plan any paper or poster size, then check if your image has enough resolution.

Print Resize

Rebuild the image for that physical size.

Pixels to CMAt Any DPI

Convert pixels to centimetres and back at any DPI — the math behind every metric print size.

Free · no sign-up · no watermark

Custom DPI

PixelsCentimetres

1,920 px = 16.26 cm (162.6 mm) at 300 DPI

Common:

Need the actual file resized? Resize this image for print →

How it works

Enter your pixels
Type the pixel width of your image (height too, if you need both).
Pick your DPI
300 for photo prints, 150 for large format — or type any other DPI.
Read the centimetres
cm = pixels ÷ DPI × 2.54. At 300 DPI, 1920 pixels print exactly 16.26 cm wide.

Pixel sizes and their print sizes in centimetres

Print size in cm = pixels ÷ DPI × 2.54. Computed for the three most common output densities.

Pixels	@ 96 DPI	@ 150 DPI	@ 300 DPI
Full HD · 1920×1080	50.8 × 28.6	32.5 × 18.3	16.3 × 9.1
4K UHD · 3840×2160	101.6 × 57.2	65.0 × 36.6	32.5 × 18.3
A4 portrait · 2480×3508	65.6 × 92.8	42.0 × 59.4	21.0 × 29.7
A3 portrait · 3508×4961	92.8 × 131.2	59.4 × 83.9	29.7 × 42.0
12 MP photo · 4000×3000	105.8 × 79.4	67.7 × 50.8	33.9 × 25.4

Frequently asked questions

How do you convert pixels to cm?: Divide the pixels by the DPI to get inches, then multiply by 2.54: cm = pixels ÷ DPI × 2.54. At 300 DPI, 1920 pixels print 16.26 cm wide.
How many pixels is 1 cm?: It depends on the DPI. At 300 DPI one centimetre is about 118 pixels; at 150 DPI about 59; at 96 DPI about 38.
How do I convert px to mm?: The same math with a different unit: mm = pixels ÷ DPI × 25.4. At 300 DPI, 1920 pixels print 162.6 mm. The result above shows the mm value next to the cm value.
How many pixels is A4 in cm?: A4 is 21 × 29.7 cm. At 300 DPI that is 2480 × 3508 pixels.
Should I use cm or inches for printing?: Use whatever your print shop asks for. Metric sizes are standard across Europe, Australia and most of Asia; US shops usually ask for inches. The math is the same either way.
Does converting pixels to cm change my image?: No. The converter only does the math in your browser. Print Resize is the tool that rebuilds the image into a file at that size.

Pixels to CMAt Any DPI

How it works

Enter your pixels

Pick your DPI

Read the centimetres

Pixel sizes and their print sizes in centimetres

Frequently asked questions

Related tools

Pixels to Inches

Print Size Calculator

Print Resize

Pixels to CMAt Any DPI

How it works

Enter your pixels

Pick your DPI

Read the centimetres

Pixel sizes and their print sizes in centimetres

Frequently asked questions

Related tools

Pixels to Inches

Print Size Calculator

Print Resize