Free Online Tool

Free Slitting Calculator — Knife Spacing & Spacer Setup

Calculate knife spacing, spacer widths, and arbor setup requirements. Enter your coil width and slit pattern to get instant results.

Input Parameters

Typical range: 8-12% for carbon steel, 10-15% for stainless

Calculation Results

Enter parameters and click Calculate

Free Calculator vs OptiStack Pro

See why leading steel service centers choose OptiStack Pro for production setups

Free Calculator

  • Basic knife spacing calculation
  • Estimated spacer widths
  • Manual clearance entry
  • Single setup at a time
  • Exact shim specifications
  • Inventory integration
  • Printable assembly sheets
  • Multiple knife engagement modes
  • Shop floor diagrams
  • Save & recall setups

$0

Forever free

RECOMMENDED

OptiStack Pro

  • Production-grade accuracy (±0.1mm)
  • Real inventory integration
  • Automatic shim optimization
  • Multiple knife engagement modes
  • Printable shop floor sheets
  • Save unlimited setups
  • BOM & scrap calculations
  • Multi-language support
  • Edge quality tracking
  • Priority email support

14 Days Free

Then $79/month

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Frequently Asked Questions

Expert answers to common slitting calculation questions

Ready for Production-Grade Setups?

Stop guessing spacer combinations. OptiStack Pro uses your actual inventory to calculate buildable setups with exact shim specifications.

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