Laser Engraving DPI & Line Interval Calculator

Calculate line interval spacing and beam overlap percentage for clean raster engraving.

Desired Engraving Resolution (DPI):

Laser Beam Spot Size (mm, typically 0.08 - 0.20 mm):

Result

0.085 mm Step Interval

300 DPI | 57.7% Spot Overlap (0.2mm beam)

Methodology & Formulas

Line Interval (mm) = 25.4 / DPI
Overlap % = (1 - (Interval / Spot Size)) × 100%

In laser raster engraving, selecting the proper line interval prevents noticeable scan banding lines while avoiding excess heat accumulation and material charring.