Print preparation
Image DPI & Print Size Calculator
Check how large an image can print at a chosen DPI, or calculate the pixels your project needs.
Pixels needed for a print
What problem does this DPI calculator solve?
It converts pixel dimensions into an estimated physical print size at a chosen PPI/DPI. It helps you check whether an image contains enough pixels for a photo, poster, card, or other printed item.
How to calculate print size
- Choose an image to read its dimensions locally, or enter width and height in pixels.
- Enter the target PPI, such as 300 for close-viewed printing.
- Select inches or centimetres.
- Review the calculated print width and height.
- Confirm final requirements with your printer.
Privacy, formats, and limits
- Upload: A selected image is read locally and is not uploaded.
- Input: Any browser-readable image format; manual pixel entry works without a file.
- Output: A calculation only. The image is not changed or downloaded.
- Size: Very large images may take longer to read on mobile devices.
- Changing a DPI value does not create new image detail.
Example
A 3,000 × 2,400 pixel image at 300 PPI calculates to 10 × 8 inches, or approximately 25.4 × 20.3 centimetres.
Frequently asked questions
Are DPI and PPI the same?
PPI describes image pixels per inch; DPI technically describes printer dots. They are often used interchangeably in print instructions, but your printer may distinguish them.
Can I increase quality by changing the DPI label?
No. Print detail comes primarily from actual pixel dimensions. Relabelling DPI alone does not add pixels.
Is 300 PPI always required?
No. Viewing distance, print method, paper, subject, and printer requirements affect the suitable resolution.