Garage Door Spring Calculator
Enter your door size and material, pick your spring type, and get the recommended spring size plus replacement cost estimate. Covers torsion and extension springs.
Last updated: July 2026
Safety warning: Garage door springs are under extreme tension and cause serious injuries every year. This calculator helps you estimate cost and identify the right spring — it does NOT replace professional installation. Never attempt torsion spring replacement yourself.
Spring Replacement Estimate
Price data sources: HomeAdvisor 2026 Garage Door Spring Replacement · Angi 2026 Garage Door Spring Repair · International Door Association (IDA) 2026 guidelines · Clopay / Wayne Dalton spring spec sheets 2026 · Homewyse May 2026 Garage Door Service
Last verified: July 2026
Parts pricing from Clopay, Holovne, and Overhead Door retail. Labor rates from IDA member contractor surveys 2026.
How to Use This Garage Door Spring Calculator
Step 1: Pick your door size preset (single 8x7, double 16x7, or custom). For custom, measure the door width and height in feet — most residential doors are 7 feet tall.
Step 2:Choose your spring type. If you're not sure: torsion springs sit on a shaft above the door; extension springs run along the horizontal tracks on both sides. Most modern 2-car garages use torsion.
Step 3:Select your door material (affects weight, which determines spring size) and how many springs you're replacing. Most pros recommend replacing both at once when one breaks.
Torsion vs Extension Springs: Which Is Better?
| Type | Cost | Lifespan |
|---|---|---|
| Torsion Spring | $150-$350/spring | 15,000-20,000 cycles |
| Extension Spring | $130-$300/spring | 10,000-15,000 cycles |
Torsion springs cost slightly more but last 30-50% longer and are significantly safer. Modern building codes in many areas require torsion for new installs. If your extension springs lack containment cables, add them ($15-$30 each) immediately.
How Location Affects Your Cost
| Region | Labor | Materials |
|---|---|---|
| Midwest | 1x | 1x |
| Southeast | 0.9x | 0.95x |
| Southwest | 1.1x | 1.05x |
| Northeast | 1.3x | 1.15x |
| West Coast | 1.4x | 1.2x |
To adjust: multiply the calculator's total by your region's average multiplier. Source: HomeAdvisor 2026 Regional Cost Index + IDA contractor surveys 2026.
What Factors Affect Garage Door Spring Cost?
Spring type
Torsion springs cost $45-$90 per spring (parts) vs $25-$60 for extension. But torsion lasts 50% longer and is safer — better value over 10 years.
Door weight and size
Heavier doors (wood, insulated double) need larger springs. A 600 lb wood door needs heavy-duty torsion springs ($70-$150 parts) vs $45-$90 for a 350 lb steel door.
One spring vs two
Replacing both springs at once costs $250-$450 but saves a second $150-$350 service call when the other inevitably breaks within 6-18 months. Most pros discount the second spring $50-$100.
Spring quality (cycle rating)
Standard springs last 15,000-20,000 cycles (7-12 years). High-cycle springs (25,000-50,000 cycles) cost $50-$100 more and last 12-20 years — worth it if you'll stay in the home. Ask for US-made galvanized springs (Overhead Door, Clopay) over imported.
Season and timing
Spring breakage spikes in winter (cold makes metal brittle). After a cold snap, garage door companies are slammed and prices peak 20-30%. Off-season (summer) may be cheaper and faster to schedule.
Garage Door Spring Cost Breakdown (on a $300 torsion replacement)
| Component | % of Total | On $300 job |
|---|---|---|
| Parts (spring + hardware) | 25-35% | $75-$105 |
| Labor (diagnosis + replacement) | 45-55% | $135-$165 |
| Service call / travel | 10-15% | $30-$45 |
| Overhead + profit | 10-15% | $30-$45 |
Frequently Asked Questions
How much does it cost to replace a garage door spring?
Garage door spring replacement costs $150 to $350 for a single torsion spring and $130-$300 for an extension spring. Most two-car garages have two springs — replacing both runs $250-$450. Parts are $45-$90 per torsion spring ($25-$60 per extension spring); labor is $90-$200 per spring (45-90 minutes each). When one spring breaks, the other is usually near end-of-life — replacing both at once saves a second trip charge and is strongly recommended.
How do I know which garage door spring I need?
Identify your spring type first: torsion springs sit on a horizontal shaft above the door (one or two springs); extension springs run along the horizontal tracks on both sides. Measure your door width and height, and note the material (steel, wood, aluminum, insulated). The spring size depends on door weight — a 16x7 steel door weighs about 350 lbs and needs standard-duty torsion springs; a wood door of the same size weighs 600+ lbs and needs heavy-duty springs. The calculator above estimates the right size from your inputs, but a pro will confirm with the spring's color code and wire size.
How long do garage door springs last?
Torsion springs last 15,000-20,000 cycles (7-12 years of daily use, assuming 2-4 cycles/day). Extension springs last 10,000-15,000 cycles (5-9 years). A 'cycle' is one open and one close. High-cycle springs (25,000-50,000 cycles) cost $50-$100 more and last 12-20 years — worth it if you plan to stay in the home. Spring life is shortened by: cold weather (metal becomes brittle), infrequent lubrication, and cheap galvanized coatings. Spray the springs with garage door lubricant ($8-$15) twice a year to extend life 30-50%.
Can I replace a garage door spring myself?
No — torsion spring replacement is one of the most dangerous DIY jobs in a home. Torsion springs are under 200+ pounds of tension and require specialized winding bars to safely unwind and rewind. Improper handling causes serious injuries and deaths every year. The exception is an extension spring replacement IF you have safety containment cables installed AND you fully release tension by opening the door and disconnecting the opener — but even then, pros have the right clamps and experience. The $150-$350 pro cost is cheap compared to an ER visit. If you insist on DIY, watch multiple manufacturer training videos first and never use socket wrenches (they slip off and cause injuries).
Why did my garage door spring break?
The most common causes of garage door spring breakage: (1) normal wear — springs have a finite cycle life and break after 10,000-20,000 cycles, (2) cold weather — metal becomes brittle below 40°F and breakage spikes in winter, (3) lack of lubrication — dry springs rust and weaken, (4) unbalanced door — if the door is heavy to lift manually, the springs are worn and overworking, (5) cheap spring quality — imported springs with thin wire fail in 2-4 years vs 7-12 for US-made. If your spring broke in winter after 8+ years, it's normal wear. If it broke in under 5 years, the spring was undersized or low quality — ask for US-made galvanized springs (overhead Door, Clopay) on the replacement.
Should I replace both garage door springs or just one?
Replace both. When one spring breaks, the other has experienced the same cycle count and is near end-of-life — it will likely break within 6-18 months. Replacing just one saves $90-$200 on parts but means a second $150-$350 service call when the other breaks (plus another day with a non-functional door). Most pros recommend replacing both at once and discount the second spring ($50-$100 off). The only exception is a very new spring (<2 years old) that broke due to a manufacturing defect — in that case, the manufacturer may warranty-replace just the failed one.
What's the difference between torsion and extension springs?
Torsion springs mount on a horizontal shaft above the door and wind up to store energy. They're safer (contained in a shaft), last longer (15,000-20,000 cycles), and provide smoother operation. Extension springs stretch along horizontal tracks on both sides of the door. They're cheaper ($25-$60 vs $45-$90 parts) but less safe (a broken extension spring can fly across the garage without containment cables) and last fewer cycles (10,000-15,000). Modern building codes in many areas require torsion springs for new installs. If you have extension springs without safety cables, add cables ($15-$30 each) immediately or upgrade to torsion when they fail.
Real Project Example
Torsion Spring Replacement — 16x7 Steel Double Door
Denver, CO · 2026
Both torsion springs broke within 3 days of each other during a January cold snap. Replaced both with high-cycle galvanized springs.
How It Went Down
Diagnosis
First spring broke Jan 12 (5°F morning). Second broke Jan 15 — classic cold-snap pattern
Cold makes spring steel brittle. Denver garage door companies get 3-5x breakage calls in Jan-Feb
Spring selection
Chose 25,000-cycle galvanized torsion springs over standard 15,000-cycle — $40 more, 10+ year lifespan
Standard springs would last 5-7 years in Denver's temperature swings; high-cycle pays off here
Replacement
Tech used winding bars to safely unwind broken spring, swap both, rewind to correct tension
45 min per spring. Never let a tech use a socket wrench — they slip and cause injuries
Balance check
Verified door lifts smoothly with 1 hand and stays at any height — sign of correct tension
If door is heavy to lift manually, springs are undersized or worn. Test quarterly
What we learned: The $40 upgrade to high-cycle springs will outlast the homeowner's time in the house. The real cost saver was replacing both at once — the second spring would have broken within weeks, meaning another $185 service call. Cold-climate homeowners should budget for spring replacement every 8-10 years and lubricate springs twice a year to extend life 30-50%.
EstimatorSuite contractor interviews, 2026
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