Laser cutting time calculator
Enter your cut length and speed to get cycle time per part, total batch time and parts per hour — the same time-based model laser shops use to quote.
How laser cutting time is calculated
Cutting time is set by how far the beam travels and how fast it moves:
cut length ÷ cutting speed × passes + setup = cycle time
So a 1,500 mm cut at 20 mm/s in one pass is 1500 ÷ 20 = 75 seconds of cutting, plus your setup and pierce time. Add passes for thick material — two passes doubles the cut time. Engraving is different: it scans an area, so use the engraving time calculator for filled logos and photos.
Typical CO2 cutting speeds (1 pass)
| Material | Speed |
|---|---|
| Acrylic 3 mm | ~18 mm/s |
| Plywood 3 mm | ~20 mm/s |
| MDF 3 mm | ~22 mm/s |
| Leather 2 mm | ~20 mm/s |
| Cardboard 2 mm | ~50 mm/s |
Diode lasers (xTool, Ortur, Sculpfun) run much slower and often need several passes — see the full power & speed chart.
FAQ
How do you calculate laser cutting time?
Divide the total cut length by the cutting speed, multiply by the number of passes, then add setup and pierce time. For example 1,500 mm at 20 mm/s in one pass is 75 seconds of cutting plus setup. This calculator does it for you and also shows total time for a batch and parts per hour.
Does engraving use the same formula?
No. Cutting follows a line (length ÷ speed), while engraving fills an area, so engraving time depends on the area, the scan speed and the line interval. Use the engraving time calculator for filled or rastered artwork.
How many passes do I need?
One pass gives the cleanest edge. Add a pass only when a single slow pass won't cut through — thick plywood or acrylic on a lower-power laser. Each extra pass adds the same amount of cutting time again, which is why this calculator multiplies by passes.