Free Trade Suite • Field-Ready
Free Garage Door Spring & Engineering Calculator Suite
Built for field techs and commercial estimators. Calculate IPPT, cross-reference truck stock, and generate job specs in seconds — no manual math, no guesswork.
🔒 100% Client-Side
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🚫 No Signup Required
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📐 DASMA & ASTM A229 Standards
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📶 Runs Offline
20-Coil Wire ID
Measure 20 coils with a tape measure and get exact wire size, DASMA color code & paint marker — no camera, no guesswork.
Engineer Spring (IPPT)
Exact counterbalance torque & DASMA cycle ratings across 12 standard, high-lift & vertical drums.
Door Weight & AI Scanner
58+ factory models across 10 manufacturers plus optional 2-slot camera vision ID.
Truck Stock Matcher
Live matrix converting broken springs to any wire gauge available on your truck shelves.
🔧 Built by a tech, for techs.
FIELD PRO-TIP
← Scroll for more tools →
Existing / Broken Spring Setup
Measure the broken spring specs to calculate replacement wire
Current Configuration
Wire Size (Inches)
Gold
Inside Diameter (ID)
Active Spring Length (Inches)
32.0"
Target Conversion Setup
Door Height (ft)
Track Radius
Cable Drum Model
Spring IPPT
35.8
inch-lbs/turn
Total System IPPT
35.8
Target balance force
Baseline Cycles
10,000
Standard DASMA
Rated Lifting Capacity
~140 lbs
(at 7'0" height, 400-8 drum)
Available Truck Stock Matcher
Live alternatives matching target IPPT across wire on your truck
| Wire Size | ID | Cut Length | IPPT (Each) | Cycle Life | Action |
|---|
💡 Pro-Tip: Tap "Select" on any row to automatically load that replacement into your printable job spec sheet.
📏 20-Coil Wire Size Identifier
Measure 20 consecutive coils tightly with a tape measure — no camera needed
Measured 20-Coil Length
5.00" (5 inches)
Identified Wire Gauge
.250
5-0/16"
DASMA Color Code
Gold / Orange
Standard Paint Marker
| Tape Measurement | Wire Size | Color Code |
|---|---|---|
| 4-1/8" (4.125") | .207 | Yellow |
| 4-3/8" (4.375") | .218 | White |
| 4-1/2" (4.500") | .225 | Red |
| 4-11/16" (4.687") | .234 | Brown |
| 4-7/8" (4.875") | .243 | Green |
| 5-0/0" (5.000") | .250 | Gold |
| 5-1/4" (5.250") | .262 | Blue |
| 5-7/16" (5.437") | .273 | Black |
| 5-11/16" (5.687") | .283 | Orange |
| 6-1/4" (6.250") | .312 | Red |
Sectional Door Weight Calculator
Select your manufacturer model preset or customize construction specs
🤖 AI Door Scanner
Pro
Recent Scans
No recent scans.
⚡ Select Factory Model Preset (Clopay, Garaga, Steel-Craft, Hörmann, Wayne Dalton, Amarr, C.H.I.)
R-Value: R-16.0
Core: 1-3/4 in Polyurethane
Density: 2.20 lbs/sq ft
Width (ft)
Height (ft)
Sections
Door Construction & Core
Window / Glass Lites
Struts & Reinforcement
Estimated Dead Weight
168 lbs
Ready for counterbalance
Per Section Weight
42 lbs
4 sections total
Dead Weight Breakdown
Component weight distribution
Base Panel Assembly:
124 lbs
Hinges, End Stiles & Rollers:
20 lbs
Window Inserts / Glass:
20 lbs
Reinforcement Struts:
24 lbs
Total Scale Weight:
188 lbs
ℹ️ Field Tip: When replacing springs on an existing door, always weigh the door with an analog scale under the bottom section before ordering to account for water absorption in older wood or uncalibrated replacement hardware.
Door & Track Specifications
Calculate required counterbalance IPPT from door dimensions
Door Width (ft)
Door Height (ft)
Total Door Dead Weight (lbs)
Don't know your door's weight? → Estimate it
Cable Drum Model
Cable Size: 1/8"
Circumference: 12.56"
Cross-Ref: Apco 400-8, Canimex, DNS
Track Configuration & Radius
🔧 Custom Shop Mode
Removes catalog length limits & cycle-life filters — outputs all math as advisory only
Turns of Wind
7.6
7 turns + 2 quarter turns
Required Total IPPT
36.5
inch-lbs / turn
Per Spring (Pair)
18.3
target for 2 springs
Engineered Spring Recommendations
0 Options
Multi-option selector: compare cycle life, stress, and dimensions
OD to ID Converter & Headroom Clearance
Calculate inside diameter from outside caliper measurement
Outside Diameter (OD)
Wire Gauge
Calculated Inside Diameter (ID)
2.00" (Standard 2" ID)
Formula: ID = OD − (2 × wire diameter)
Minimum Headroom Clearances
| Track Radius / Mount | Headroom (Manual) | With Trolley Opener |
|---|---|---|
| 12" Radius Standard | 10 inches | 12 inches |
| 15" Radius Standard | 12 inches | 14 inches |
| Low Headroom (Front Mount) | 7.5 inches | 9.5 inches |
| Low Headroom (Rear Mount) | 4.5 inches | 6.5 inches |
🥁 Comprehensive Drum Comparison & Cross-Reference Explorer
Reverse-engineered industry database comparing OMI, Apco, Canimex (Torque Force), DNS & SSC
| Drum Model | Lift Type | Max Height | Cable Size | Moment Arm | Cable Travel / Turn | Cross-Reference Part Numbers |
|---|
🎯 Springs by Direct IPPT Lookup (SSC Style)
Input an exact target IPPT to view all engineered wire and length matches
Target IPPT Value
Inside Diameter
| Wire Gauge | Inside Diameter | Cut Length | Exact IPPT | Cycle Rating | Action |
|---|
📚 10-Manufacturer Model Weight & Density Reference Catalog
Audited factory engineering specs across 58 residential & commercial series (Canadian & US)
| Manufacturer | Model & Series | R-Value | Construction & Gauge | Weight / Sq.Ft | 8x7 Base Wt | 16x7 Base Wt | Stamp Location | End Cap Profile | Action |
|---|