Convert between pixels and real-world size, plus handy mm ⇄ inch and °C ⇄ °F converters.
Use this to size artwork for engraving: if you know the DPI and either the pixel size or physical size, convert the other.
Handy when switching between material datasheets (often °C) and laser or shop environments (often °F).
• 25.4 mm = 1 inch
• DPI = dots (pixels) per inch – 300 DPI is common for photos.
• mm = (pixels ÷ DPI) × 25.4
• pixels = (mm ÷ 25.4) × DPI