Slitting Calculator
Free calculator for slitting jobs: how many strips fit in your coil width, how much width goes to edge trim and scrap, and your yield percentage. This is an interactive tool; enable JavaScript to use it.
Slitting Strip Formula
Strips = ⌊(Coil Width − 2 × Edge Trim) ÷ Strip Width⌋. Yield = (Strips × Strip Width) ÷ Coil Width. Rotary slitting shears the strip, so no width is lost to kerf — losses are edge trim plus any remainder narrower than one strip.
Frequently Asked Questions
How many strips can be slit from a coil?
Strips = (coil width − 2 × edge trim) ÷ strip width, rounded down. A 1250mm coil with 5mm edge trim per side and 100mm strips yields 12 strips, using 1200mm of width with 50mm total scrap (4%).
Does slitting remove material like saw cutting?
No. Rotary slitting is a shearing process — circular knives separate the strip with no kerf loss. The only width losses are edge trim from both sides and any unusable remainder.
How much edge trim is needed when slitting?
Typically 3–10mm per side, to remove rolled edges that can have damage, camber or thickness variation.
What is a good yield percentage for slitting?
Well-planned slitting programs achieve 95–98% yield, by choosing strip widths that divide evenly into the usable coil width or mixing strip widths in one setup.