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Before you choose a style or color for a new garage door, you need the right size. Most homes use one of a handful of standard sizes, but the space around the opening matters just as much as the opening itself. Here’s a quick guide to common garage door sizes and how to measure your garage so your new door fits and works perfectly.
Common garage door sizes
- Single doors: 8 feet wide by 7 feet tall is the most common. 9×7 and 10×7 are also popular, and 8-foot-tall versions fit taller vehicles.
- Double doors: 16 feet wide by 7 feet tall is the most common double size, with 16×8 and 18×7 also widely used.
- Taller doors: 8-foot-tall doors are increasingly common on newer homes and for trucks and SUVs with roof racks.
- RV and oversized doors: 10 to 14 feet tall, for campers, boats and workshops.
How to measure your garage for a new door
- Width: measure the finished opening from side to side at its widest point.
- Height: measure the finished opening from the floor to the top.
- Headroom: measure from the top of the opening to the ceiling (or the lowest obstruction). Standard torsion spring systems typically need about 12 inches; low-headroom hardware is available for tighter spaces.
- Side room: measure the wall space on each side of the opening. Most doors need a few inches on each side for the tracks.
- Backroom: measure from the door opening toward the back of the garage. You need at least the door’s height plus extra space for the tracks and opener.
Tips for an accurate measurement
Measure in a few places, since older openings and floors are rarely perfectly square, and use the largest numbers. Note anything that could get in the way: ducts, pipes, lights, beams or storage racks. If you’re replacing a door, measure the opening, not the old door itself.
Our online estimator uses standard widths and heights so you can see your exact price in minutes. Before anything is ordered, a technician confirms the measurements in person — so you never get a door that doesn’t fit.
Can I change my garage door size?
Yes, but it’s a construction project. Making an opening larger usually means changing the header, which is a structural beam, and may need a permit. Many homeowners combine two single doors into one double door, or raise the height to fit a larger vehicle. If you’re considering it, talk to us early so the new door and the framing work together.
Frequently Asked Questions
What is the most common garage door size?
For single doors, 8 feet wide by 7 feet tall. For double doors, 16 feet wide by 7 feet tall.
How much headroom does a garage door need?
A standard torsion spring setup usually needs about 12 inches above the opening. If you have less, low-headroom track and spring systems can often still work.