Free Tools
Interactive calculators built for leathercraft and leatherworking for beginners — hand stitching, tooling, dyeing, edge finishing, and starter projects. No sign-up, no downloads — enter your numbers and get an answer you can act on.
Saddle Stitch Thread Calculator
Get the thread length to cut and the stitch count for any seam, based on seam length and stitching iron spacing.
Leather Thickness Converter (oz ↔ mm)
Convert leather weight between ounces and millimeters and see the typical use for that thickness range.
Belt Blank Length Calculator
Get the blank length to cut and where to punch five holes for a belt, based on your waist measurement.