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Laser DPI Calculator

Convert image size to DPI and laser line interval for clean, sharp engravings.

Image & DPI Input Engraving Helper

Tip: enter image pixels and engraving size to calculate true DPI. You can also type a DPI directly if you already know it.

Results Awaiting input

Calculated DPI (width)
Calculated DPI (height)
Final DPI used
Pixels per mm
Dot spacing (mm)
Dot spacing (inch)
Recommended line interval
Estimated total pixels
How to use this

• Use dot spacing / line interval as a starting point for your laser’s line gap (Y step). • Higher DPI → smaller spacing → more detail but slower runs. • For photos, many users like 250–350 DPI; for line art, you can often go higher.