How do I convert a canvas size from inches to centimeters?

Multiply each inch measurement by 2.54. For example, 16 by 20 inches equals 40.64 by 50.8 centimeters.

How many pixels do I need for a canvas print?

Multiply the intended print width and height in inches by the image resolution in pixels per inch. A 16 by 20 inch print at 300 PPI needs 4,800 by 6,000 pixels.

What size can I print a 3000 by 4000 pixel image?

Without resampling, a 3000 by 4000 pixel image prints at 10 by 13.33 inches at 300 PPI, 12.5 by 16.67 inches at 240 PPI, or 20 by 26.67 inches at 150 PPI.

Should canvas dimensions be written width by height?

This converter consistently uses width by height. Confirm the ordering and canvas depth with a manufacturer or frame supplier before ordering.

Canvas Size Converter

Convert canvas dimensions between inches, centimeters, millimeters, and pixels. Set print PPI, calculate aspect ratio, and match standard artist canvases.

Convert a canvas or artwork size

Inches, centimeters, millimeters, and pixels at a selected print resolution
Maximum unresampled physical print size from source image pixels
The exact width-to-height aspect ratio and portrait, landscape, or square orientation
The closest standard artist-canvas sizes by physical area and shape
Shareable conversion links for print, framing, and purchasing workflows

Common canvas size conversions

Standard canvas dimensions shown width by height at 300 pixels per inch
Inches	Centimeters	Millimeters	Pixels at 300 PPI
8 × 10 in	20.32 × 25.4 cm	203.2 × 254 mm	2,400 × 3,000 px
11 × 14 in	27.94 × 35.56 cm	279.4 × 355.6 mm	3,300 × 4,200 px
16 × 20 in	40.64 × 50.8 cm	406.4 × 508 mm	4,800 × 6,000 px
18 × 24 in	45.72 × 60.96 cm	457.2 × 609.6 mm	5,400 × 7,200 px
24 × 36 in	60.96 × 91.44 cm	609.6 × 914.4 mm	7,200 × 10,800 px
30 × 40 in	76.2 × 101.6 cm	762 × 1,016 mm	9,000 × 12,000 px

One inch equals exactly 2.54 centimeters. Pixel dimensions equal physical inches multiplied by image resolution in pixels per inch.

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Maximum print size from image pixels

Maximum unresampled physical dimensions at common image resolutions
Image pixels	300 PPI	240 PPI	150 PPI
1,200 × 1,800 px	4 × 6 in	5 × 7.5 in	8 × 12 in
2,400 × 3,000 px	8 × 10 in	10 × 12.5 in	16 × 20 in
3,000 × 4,000 px	10 × 13.33 in	12.5 × 16.67 in	20 × 26.67 in
4,000 × 6,000 px	13.33 × 20 in	16.67 × 25 in	26.67 × 40 in
6,000 × 9,000 px	20 × 30 in	25 × 37.5 in	40 × 60 in

Divide each source-image dimension by the selected PPI. Cropping, gallery-wrap bleed, borders, and printer specifications can reduce the usable face size.

Calculate a 3,000 × 4,000-pixel image at 300 PPI.

How to measure a canvas

Measure the front face from left edge to right edge for width.
Measure from top edge to bottom edge for height.
Record the stretcher-bar depth separately for framing and gallery-wrap decisions.
Confirm whether a retailer lists nominal stretcher dimensions or finished outer dimensions.

This converter consistently uses width × height. Changing units preserves aspect ratio because both dimensions use the same conversion factor.

Pixels, PPI, and printer DPI

Image resolution is measured in pixels per inch. Printer output is measured in dots per inch; they are related but are not the same measure.

Adobe describes 300 PPI as a common high-quality print standard, but the print provider’s specification should control a production file.