Calculators and quick references for overhead door service
Springs
Identify, size, convert, or design torsion springs — all in one tool
Door Section Identifier
Pin down the exact replacement section by material, profile, and side-profile match
Door Weight Estimator
Estimate door weight by material, size, and gauge
Cycle Life Calculator
Estimate spring lifespan from cycle rating and usage
Cable Sizing Tool
Determine cable diameter and length by door size and lift type
High-Lift Conversion
Feasibility, drum selection, and spring sizing for high-lift track
Track, Headroom & Clearances
Check what lift configuration fits, plus track and roller reference
IPPT Quick Reference
Inch-pounds per turn from a spring's specs, or what a door requires
Wire Size Reference
Gauge-to-decimal conversion and spring wire lookup
Spring Color Codes
Wire size identification by color and wind direction
Operator Error Codes
Flash codes for LiftMaster, Genie, OHD, and commercial operators
Blink Code Decoder
Translate LED flash patterns into problems and solutions
Operator DIP Switch Settings
Common DIP switch configurations for LiftMaster, Genie, and more
Torque Specifications
Bolt torque values for track brackets, spring anchors, and bearing plates
Cable Drum Reference
Standard drum dimensions and cable wraps by door height and lift type