Calculadora de Tamanho para Impressão
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
in = px / DPI; cm = in × 2,54
About this calculator
The Print Size Calculator helps you determine the physical dimensions of an image when printed, based on its pixel resolution and dots per inch (DPI). Simply enter the width and height in pixels and the desired DPI. The calculator automatically converts the values to inches and centimeters, showing the final print size.
The calculation is straightforward: divide the number of pixels by the resolution (DPI) to get the size in inches. Then multiply by 2.54 to convert to centimeters. For example, a 3000x2400 pixel image at 300 DPI will result in 10x8 inches or 25.4x20.32 cm. This process is essential to ensure sharp and expected print quality.
Use this tool when you need to size images for professional printing, such as photos for albums, posters, banners, or graphic materials. It is useful for photographers, graphic designers, and anyone who wants to avoid surprises with pixelated or cropped images. With the result, you can adjust the DPI or resize the image before sending it to the print shop.
Cautions: make sure the DPI matches the print shop's recommendation (usually 300 DPI for high-quality photos). Low-resolution images (few pixels) may result in small or blurry prints. Remember that increasing DPI does not improve the original image quality; it only reduces the physical print size.
Frequently asked questions
What DPI should I use for high-quality photo prints?
For high-quality photos, 300 DPI is recommended. This ensures sharpness and fine details.
Can I use this calculator for images with resolution in megapixels?
Yes, but first convert megapixels to pixels. For example, 12 MP typically equals 4000x3000 pixels.
What happens if I print an image with a lower DPI than recommended?
The print may appear pixelated or lack sharpness, especially at larger sizes.
Does the calculator work for any type of printing, like banners?
Yes, it works for any print, but for large banners, a lower DPI (150 DPI) is often acceptable due to viewing distance.
How do I know the maximum print size without losing quality?
Divide the pixel width and height by the desired DPI. The result in inches is the maximum size with good quality.