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350 DPI pixel dimensions calculator

Calculate the pixel dimensions required for a physical print size at 350 DPI.

Use tool

WidthHeightUnit

🔒 Inputs are processed locally in your browser.

Result

How to use this tool

Calculate the pixel dimensions required for a physical print size at 350 DPI.

Set Width, Height, Unit.
Use Calculate to process the input.
Compare the result with your source data and return to the input to make corrections.

Unit: mm / inch

Input and settings example

Width: 148
Height: 210

350 DPI is a print requirement you may encounter, especially in Japanese print workflows

At 350 DPI, the tool calculates 350 pixels for each printed inch. A4 portrait at 210 × 297 mm requires about 2894 × 4093 px.

It does not mean every print job should use 350 DPI. Follow the actual printer or submission specification when it calls for 300, 400, 600 DPI, or another value.

Compared with 300 DPI, the same print size needs more pixels

At the same A4 size, 350 DPI requires more pixels than 300 DPI. In the reverse direction, the same image will print at a smaller physical size when you require 350 DPI.

Compare with the 300 DPI calculator and Pixels to print size to see the relationship.

A metadata value of 350 DPI is not enough by itself

Some image editors can change the DPI/PPI metadata without adding image detail. Changing that field to 350 does not increase the source pixel count.

For submission checks, look at the actual width × height in pixels and compare those numbers with the requirement from this tool.

If the image is short, check how large the shortfall really is

Being a few pixels short is very different from having only half the required width and height. Large upscales can make edges, text, and fine detail look softer.

If the destination publishes a minimum-resolution exception or tolerance, check that rule as well.

Go one level deeper

Understand image resolution, DPI, and print size →