doorbot

Tools

Calculators and quick references for overhead door service

Calculators

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

Quick 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

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