How to Replace Door Hinges: Complete Step-by-Step Guide
Replacing door hinges takes 30–60 minutes per door and needs only a screwdriver, a hammer, and the right replacement hardware. Whether your hinge is bent, rusted, stripped, or you are upgrading from brass to matte black, this guide covers everything — from matching the right hinge size to fixing stripped screw holes permanently — so your door swings cleanly and latches without force the first time.
What You Will Need
| Tools | Materials |
|---|---|
| Phillips or flathead screwdriver (or cordless drill) | Replacement hinges — same size as existing ones |
| Hammer | 3-inch wood screws (for stripped holes) |
| Utility knife | Wooden toothpicks and wood glue (stripped hole repair) |
| Sharp wood chisel (if mortise needs adjustment) | Thin cardboard shims (if hinge sits too shallow) |
| Tape measure and pencil | Petroleum jelly or silicone lubricant (for hinge pins) |
| Painter’s tape (to hold hinge during install) | Sandpaper 120-grit (optional, for mortise cleanup) |
Hinge Sizing Quick Reference
| Door Type | Standard Hinge Size | Number of Hinges |
|---|---|---|
| Interior hollow-core door | 3.5 x 3.5 inches | 2–3 hinges |
| Interior solid-core door | 3.5 x 3.5 inches | 3 hinges |
| Exterior entry door | 4 x 4 inches | 3 hinges |
| Heavy exterior or security door | 4.5 x 4.5 inches | 3–4 hinges |
Always measure your existing hinge — height, width, and corner radius (square vs. rounded) — before buying. A mismatch in corner radius leaves visible gaps at the mortise corners that are nearly impossible to hide without filling and repainting.
Safety Precautions Before You Begin
- Never remove all hinges at once. A standard interior door weighs 30–60 lbs; a solid exterior door can exceed 100 lbs. Always replace one hinge at a time and keep the door braced while you work.
- Brace the door fully. Use a folded towel, rubber doorstop, or a commercial door jack wedged under the door’s bottom edge before removing any hinge hardware.
- Wear work gloves. Old hinge edges — especially painted, rusted, or bent ones — have sharp burrs that can cut deeply without warning.
- Test for lead paint if your home was built before 1978. If any sanding or chiseling of the mortise area is needed, use a lead test swab first. If positive, wear an N-100 respirator and contain all dust before proceeding.
- Keep children and pets out of the doorway. A door slipping off its brace can fall and cause serious injury. Clear the area before starting work.
How to Replace Door Hinges: Step-by-Step
Step 1 — Buy the Exact Right Replacement Hinge
Remove one screw from an existing hinge on your door and take the entire hinge to the hardware store. Match all four specifications: height (3.5″ or 4″), width, corner style (square or rounded), and finish. Do not guess — a hinge that is 1/8 inch too wide will not sit flush in the existing mortise. Also decide between a plain-bearing hinge and a ball-bearing hinge at this stage. Ball-bearing hinges cost more but are the right choice for exterior doors or any door used more than 20–30 times a day — the steel balls eliminate metal-on-metal wear at the knuckle, dramatically extending service life.
Step 2 — Open the Door and Brace It Securely
Open the door to 90 degrees and wedge a doorstop, rubber wedge, or folded bath towel firmly under the leading edge near the floor. For heavy solid-core or exterior doors, use a dedicated door jack or have a second person hold the door while you work. The brace must be tight enough that the door does not move when you remove one hinge plate. The standard placement of door hinges is 7 inches from the top of the door and 11 inches from the bottom — this is useful information when positioning a replacement hinge if the old mortise is damaged.
Step 3 — Remove the Old Hinge One at a Time
Start with the middle hinge if there are three — the top and bottom hinges continue to bear the door’s weight while you work. Using a screwdriver or drill on low torque, remove all screws from the door-side leaf first, then the frame-side leaf. If paint has sealed the hinge in place, score around the hinge perimeter with a utility knife before prying — this prevents tearing the paint and wood fiber away from the mortise edge. Pop a stuck hinge leaf free by tapping a flathead screwdriver gently under the corner. Keep the old screws nearby for size comparison with the new hardware.
Step 4 — Inspect the Mortise and Fix Any Stripped Screw Holes Now
Look at both mortise pockets — the recessed slots in the door edge and frame where the hinge leaves sit. The depth should match your new hinge leaf thickness exactly. A hinge sitting proud of the wood surface by even 1/16 inch will cause the door to bind on the latch side. Check every screw hole for stripping by inserting a screw and feeling for resistance. If a screw spins freely, you have two reliable repair options:
- Toothpick method (for light stripping): Dip 2–3 wooden toothpicks in wood glue, insert them into the hole, let cure for 30–60 minutes, snap flush, and re-drive the original screw.
- Long-screw method (permanent fix for severe stripping): Use 3-inch screws that pass through the door jamb and thread into the structural framing stud behind it. This gives 3 solid inches of wood to grip instead of 3/4 inch of jamb material — it is the same method professional carpenters use and will never strip out again. This is especially important for exterior doors where hinge strength directly affects security. See our guide on how to repair a door frame if the jamb itself is damaged.
Step 5 — Set the New Hinge Flush in the Mortise
Place the new hinge leaf into the mortise pocket. It should sit perfectly flush — not raised above the surface and not sunken. If it sits too high (proud), deepen the mortise slightly with a sharp wood chisel: make vertical cuts along the outline with a utility knife first, then make thin horizontal cuts with the chisel to shave material gradually. If the new hinge sits too low (below flush), slip a piece of thin cardboard cut to the exact leaf shape behind the hinge leaf as a shim. Hold the hinge in position with a strip of painter’s tape while you drive the very first screw — even a 1 mm shift during installation creates alignment problems later.
Step 6 — Drive the Screws Door-Side First, Then Frame-Side
Always secure the door-side leaf before the frame-side leaf — this lets you make micro-adjustments to the frame side while confirming the door-side is solid. Drive screws by hand or with a drill set to low torque (10–12 Nm maximum). Overtightening is the single most common DIY error: it strips the new holes immediately or sinks screw heads below flush, causing the hinge to rock slightly when the door swings. Every screw head must sit flush with the hinge face — not proud, not countersunk. If a screw wobbles as you tighten, stop immediately and switch to a longer screw rather than applying more force. Once the door-side leaf is secure, drive the frame-side screws. Need to fine-tune alignment after installation? Our guide on how to adjust door hinges walks through bending, shimming, and screw-depth adjustments.
Step 7 — Test the Swing Before Moving to the Next Hinge
Remove the door brace and slowly swing the door open and closed. It should move smoothly with no scraping, no sticking, and no change in the gap around the door perimeter. The gap along the hinge side should be about 1/8 inch; the latch side gap should also be about 1/8 inch; and the top gap should be consistent at about 1/8 inch. The bottom gap is typically 1/4 to 3/8 inch to clear the floor. If the door passes this test, replace the brace and proceed to the next hinge. If it fails, diagnose and fix the current hinge before removing the next one.
Step 8 — Repeat for All Remaining Hinges and Do the Final Check
Complete Steps 3–7 for each remaining hinge. After all hinges are replaced, do one final close-and-latch test: the latch bolt should drop smoothly into the strike plate with zero lifting or forcing of the door. If the bolt misses the strike plate by a small margin, the issue is usually a hinge that is slightly proud or deep on the frame side — not a strike plate problem. Our article on how to fix a door that won’t latch covers the full diagnostic and fix process if alignment is still off after new hinges are installed.
Hinge Type Comparison: Which One Should You Buy?
| Hinge Type | Best For | Lifespan | Approx. Cost Each |
|---|---|---|---|
| Plain-bearing (loose pin) | Interior doors, low traffic | 10–20 years | $2–$6 |
| Ball-bearing | Exterior doors, high-traffic interior doors | 25–40+ years | $8–$25 |
| Spring-loaded (self-closing) | Fire doors, garage entry doors | 8–15 years | $10–$30 |
| Pivot hinge | Heavy frameless doors | 20+ years | $15–$50 |
Pro Tips and Common Mistakes
- Buy one extra hinge per set. Hinge finishes are discontinued constantly. Buy a spare now — if one hinge is damaged 3 years from now, you have an exact match rather than needing to replace all three.
- Do not paint over new hinges. Paint fills the knuckle gap and causes squeaking, stiffness, and premature wear. Mask hinges with painter’s tape before painting the door or frame.
- Start every screw by hand. Power-driving screws without a gentle hand-start often causes the bit to walk and strip the head before the screw is seated.
- Check corner radius before you leave the store. Square-corner hinges in a round-corner mortise leave ugly gaps at the corners — a detail that competitors almost never mention but homeowners notice immediately.
- Replace all hinges in one session. Mixing old and new hinges on the same door creates uneven load distribution and accelerates wear on the new hardware.
- Lubricate the hinge pin before reinstalling. A tiny smear of petroleum jelly or silicone lubricant on the pin barrel eliminates future squeaking before it starts. Do this during installation — it costs 30 seconds and saves a service call later.
Troubleshooting: Common Problems After Hinge Replacement
| Symptom | Most Likely Cause | Fix |
|---|---|---|
| Door swings open by itself | Frame-side hinge mortise too deep (hinge bind) | Add thin cardboard shim behind frame-side leaf |
| Door swings closed by itself | Door-side hinge mortise too deep | Add thin cardboard shim behind door-side leaf |
| Door scrapes the floor after install | Top hinge misaligned — door shifted down | Re-seat top hinge; verify frame mortise depth is correct |
| Screws keep loosening within weeks | Holes too large for screw gauge | Replace with 3-inch screws reaching the framing stud |
| Door won’t close — catches on the stop | Hinge leaf sitting proud of surface | Deepen mortise with chisel; confirm all screw heads are flush |
| Squeaking immediately after install | Dry hinge pin or paint contamination | Pull pin, apply petroleum jelly or silicone, reinstall |
| Uneven gap on latch side | Middle hinge not flush | Inspect middle hinge leaf depth; shim or deepen as needed |
If a rubbing or scraping issue persists after all hinges are correct, the door itself may have swollen or warped — see our guide on how to fix a rubbing door for planing, sanding, and permanent solutions. For doors that are sagging badly even with new hinges, our guide on how to hang a door properly covers rehang procedures from scratch.
Frequently Asked Questions
Can I replace door hinges without removing the door from the frame?
Yes — and this is the recommended method for most homeowners. Replace one hinge at a time while the door remains hanging on the other hinges. Brace the door with a wedge under the bottom edge before removing any hinge. You only need to fully remove the door if all hinges are damaged simultaneously or if the mortise needs major woodworking that requires clear access.
My door has 2 hinges — should I add a third when I replace them?
If the door is hollow-core and lightweight (under 50 lbs), two hinges are sufficient. If the door is solid-core, solid wood, or an exterior entry door, add a third hinge at the same time you replace the existing two. Place the third hinge centered between the top and bottom hinges. Three hinges distribute the door’s weight more evenly, reduce stress on the frame, and prevent the screw holes from stripping prematurely.
What is the correct hinge placement measurement for a standard door?
The standard placement for a 3-hinge door is: top hinge 7 inches from the top of the door, bottom hinge 11 inches from the bottom of the door, and the third hinge centered between those two. These measurements put the hinges away from the ends of the door where wood splits are most common and distribute the load evenly across the height of the door.
Can I use the same screws from the old hinges when installing new ones?
Only if the old screws are undamaged and the screw holes in the door and frame are still tight. If either condition is not met, use new screws. For frame-side screw holes that feel loose, switch to 3-inch screws that reach the framing stud — this is always the better choice for exterior doors and anywhere security matters. The screw included with budget hinge sets are usually too short (3/4 inch) and should be replaced with 1.5 to 2-inch screws as a minimum.
How do I know if I need new hinges or just a hinge adjustment?
Replace the hinge if: the metal is visibly bent, cracked, or rusted through; the hinge pin is worn and the door sags even when all screws are tight; or the hinge knuckle is loose and wobbles. Adjust the hinge if: the door is sagging or misaligned but the hinge metal looks intact and all screws are snug. Adjusting is often just tightening loose screws or using longer screws — see our door hinge adjustment guide for exact steps before deciding on full replacement.
Conclusion
Replacing door hinges is one of the most satisfying small repairs in home improvement: it is inexpensive, fast, and the improvement to how the door feels and operates is immediate. The keys to a successful replacement are buying the exact right hinge size and finish, fixing stripped screw holes before installing new hardware, and replacing one hinge at a time so the door stays supported throughout the process.
Once the hinges are done, consider updating the full door hardware set — our guide on how to replace a door handle shows how to match lever handles or knobs to your new hinge finish. If you are doing a full security upgrade at the same time, read our guide on how to install a deadbolt to complement the hinge work with stronger locking hardware. For ongoing care of all door hardware, our door maintenance tips guide keeps every hinge, lock, and seal in top shape year after year.
