What Canva Size Do You Need for an 18×24 Print?
An 18×24 inch print is 3:4. For 300 PPI raster output, use 5400×7200 pixels. Compare lower effective PPI targets and crop-free ratios.
Keep the 3:4 ratio
18×24 reduces to 3:4. Design in that ratio if the full composition must fit without ratio-based trimming.
Raster pixel targets
Multiply each physical dimension by the target PPI: 18×300 = 5400 and 24×300 = 7200.
Check the downloaded file
For JPG/PNG exports, inspect actual pixels after download and calculate effective PPI at 18×24. A metadata label alone does not create missing detail.
18 × 24 is a 3:4 print
The ratio must match before resolution is considered.
| Target PPI | Pixels for 18 × 24 |
|---|---|
| 300 | 5400 × 7200 |
| 240 | 4320 × 5760 |
| 200 | 3600 × 4800 |
| 150 | 2700 × 3600 |
Worked example: 3600 × 4800
That file is exactly 3:4. At 18 × 24 inches it produces 200 effective PPI. At 12 × 16 inches it produces 300 PPI. Same pixels, different physical size.
Avoid accidental cropping
Do not start from a 2:3 canvas such as 12 × 18 and simply stretch it to 18 × 24. Convert or redesign for 3:4 so important artwork is not cut away.
Frequently asked questions
What ratio is 18×24?
3:4.
How many pixels is 18×24 at 300 PPI?
5400×7200 pixels.
How many pixels at 200 PPI?
3600×4800 pixels.