Fall Clearance Calculator This calculator lets you work out fall clearance in different situations. It’s highly intuitive — just plug in your numbers and go Workplace geometry Vertical distance from anchor point to work platform VD (mm) Horizontal distance from anchor point to work platform edge HD (mm) Lanyard details Lanyard length LL (mm) Vertical distance from platform to lanyard attachment on harness H (mm) Free fall distance Angular distance from anchor point to work platform edge S (mm) 0 Unobstructed free fall distance (LL-S+H) FF (mm) 0 Required fall clearance Deceleration distance (lanyard tear-out value) DD (mm) 0 Manditory clearance C (mm) 1000 REQUIRED FALL CLEARANCE RD (mm) 0