The Master Key Calculator

The power to create a Master Key System from the hip!
What is this?!

MK Calc is a free web based service which enables you, the professional locksmith, to create simple master key systems in a flash.

In short...
  • All major bands; Schlage, Best, Lockwood & many more
  • Inline & Small Form Interchangeable Core (SFIC)
  • From 3 to 7 chambers
  • Download to Spread Sheet, HTML or MK Express
  • 1, 2 or 3 level Master Key Systems
  • Flexible chamber allocation
  • Design, view & edit on your Phone, Tablet or Desktop
Want to known more?