Spring cycle-life calculator
How long will a garage door spring last? Enter how many times the door cycles a day and the spring's cycle rating to get its service life in years, and see which high-cycle upgrade hits your target.
A standard spring is rated 10,000 cycles; high-cycle springs run 25k–100k. Don't know your rate? A busy shop bay is ~15–25/day; a loading dock 40+.
How spring life is calculated
Springs are rated in cycles: one cycle is a full open plus a full close. Service life is simply the rating divided by how many cycles the door does per year:
Life (years) = cycle rating ÷ (cycles per day × 365).
So a 10,000-cycle spring at 4 cycles/day lasts ~6.8 years; at 40 cycles/day it's gone in under 8 months. That gap is the whole case for high-cycle springs on commercial doors.
Standard vs. high-cycle springs
A high-cycle spring reaches a higher rating by using a longer spring (and often a larger wire and drum) that spreads the same lifting torque over more coils, lowering the stress per cycle. Common tiers:
- 10,000: standard residential.
- 20,000–25,000: heavier use, light commercial.
- 50,000–100,000: commercial, high-traffic, and dock doors.
On a busy door the upgrade pays for itself in fewer spring-replacement calls and less downtime.
Want the full walkthrough, not just the tool? Read the field guide: How long do garage door springs last? Do the cycle math
Frequently asked questions
How long do garage door springs last?
A standard 10,000-cycle spring lasts roughly 6–7 years at typical residential use (about 4 cycles a day). A door that cycles 20–50 times a day (a busy shop or dock) burns through a 10,000-cycle spring in a year or two, which is why commercial doors use high-cycle springs (25k / 50k / 100k).
What counts as one spring cycle?
One cycle is one full open plus one full close. So a door opened and closed 10 times a day does about 3,650 cycles a year.
Is a high-cycle spring worth it?
On a high-traffic door, yes: a 25k or 50k spring costs a bit more but lasts several times longer, cutting spring-replacement service calls and downtime. This tool shows the payback: the years each tier lasts at your cycle rate.
How many cycles does my door do per day?
Estimate the number of times the door fully opens and closes daily. A home is ~2–5; a service shop bay might be 10–20; a busy loading dock or drive-through can be 40–100+.
Audrey does this in the truck, hands-free.
This calculator runs the exact logic built into Ask Audrey, where your techs just ask out loud and get the answer cited to your own manuals (plus operator sizing and high-lift). Every tech, a senior tech.