Pixel Dimensions for Common Paper Sizes at 300 DPI (Letter, A4, 8.5x11 and More)

Pixels = inches × DPI. At 300 DPI, 8.5 × 11 inches is 2550 × 3300 pixels, and A4 is 2480 × 3508 pixels. Use 300 DPI for sharp prints, 150 for large posters, and 72 for screens. The tables below save you doing the math.

Quick Facts
Formula	pixels = inches × DPI
cm to pixels	(cm ÷ 2.54) × DPI
Sharp print standard	300 DPI
Screen reference	72 DPI (a convention)

Paper Sizes in Pixels (Letter, Legal, A-Series)

Paper	Inches / mm	300 DPI	150 DPI	72 DPI
US Letter (8.5 x 11)	8.5 × 11 in	2550 × 3300	1275 × 1650	612 × 792
US Legal	8.5 × 14 in	2550 × 4200	1275 × 2100	612 × 1008
Tabloid	11 × 17 in	3300 × 5100	1650 × 2550	792 × 1224
A5	148 × 210 mm	1748 × 2480	874 × 1240	420 × 595
A4	210 × 297 mm	2480 × 3508	1240 × 1754	595 × 842
A3	297 × 420 mm	3508 × 4961	1754 × 2480	842 × 1191

Photo Print and Poster Sizes in Pixels

Print size	300 DPI	150 DPI
4 × 6 in	1200 × 1800	600 × 900
5 × 7 in	1500 × 2100	750 × 1050
8 × 10 in	2400 × 3000	1200 × 1500
11 × 14 in	3300 × 4200	1650 × 2100
16 × 20 in	4800 × 6000	2400 × 3000
18 × 24 in	5400 × 7200	2700 × 3600
24 × 36 in	7200 × 10800	3600 × 5400

More on photo sizes: standard photo print sizes in pixels, 4x6, 8x10 and 5x7, 4x4.

How Many Pixels Is a 3.5 Inch Image at 300 DPI?

3.5 × 300 = 1050 pixels along that side. A common 3.5 × 2 inch business card at 300 DPI is 1050 × 600 pixels. Add 0.125 inch bleed on each side if the printer asks for it: (3.5 + 0.25) × 300 = 1125.

What DPI Is a 10x11 Print?

DPI is pixels divided by inches, so it depends on your image. For a 10 × 11 inch print:

Your image	DPI at 10 × 11 in	Quality
3000 × 3300 px	300	Sharp
2000 × 2200 px	200	Good
1500 × 1650 px	150	Soft up close
1000 × 1100 px	100	Visibly low

Centimeters and Odd Sizes (28 x 21.5 cm, and so on)

Divide centimeters by 2.54, then multiply by DPI. A sheet 21.5 × 28 cm (very close to US Letter) at 300 DPI is (21.5 ÷ 2.54) × 300 ≈ 2539 pixels by (28 ÷ 2.54) × 300 ≈ 3307 pixels.

What If My Image Has Too Few Pixels?

Changing the DPI number does not add pixels. If the image is smaller than the size you need, enlarge it with an AI upscaler first (2x free, 4x on Pro) with the upscaler or image enlarger, then set the print size. See how to increase DPI and how to enlarge a photo for printing.

Frequently Asked Questions

How many pixels is 8.5 x 11?

At 300 DPI it is 2550 × 3300 pixels; at 150 DPI, 1275 × 1650; at 72 DPI, 612 × 792.

What is a 3.5 inch image at 300 DPI in pixels?

1050 pixels on the 3.5 inch side.

What DPI is a 10x11 print?

It depends on your pixel count: divide pixels by inches. 3000 pixels across 10 inches is 300 DPI.

How many pixels is A4 at 300 DPI?

2480 × 3508 pixels.

How do I convert centimeters to pixels?

(cm ÷ 2.54) × DPI. For 21.5 × 28 cm at 300 DPI, about 2539 × 3307 pixels.

Need more pixels? Enlarge your image free →