Usually no. If you stop forcing it straight away, a locksmith can normally extract the broken piece and leave the door lock working, and a new key can be made from the two halves of the broken key. Forcing the lock or poking the fragment deeper is what turns a simple extraction into a replacement lock.
What should I do in the first minute?
Stop. Take the piece in your hand out of the lock if it will slide free, and put both halves somewhere safe, because a new key can often be made from them later. Do not keep turning, and do not push anything else into the keyhole. Twisting the broken half, or digging with another key, a knife or a screwdriver, usually pushes the key fragment deeper and can damage the pins inside the lock cylinder. That is the point where a cheap fix becomes a new lock.
If a decent stub of the key is sticking out of the lock, you can try gripping it gently with needle-nose pliers or tweezers and sliding it straight out. Straight is the important word: pull at an angle and it jams. If it does not come with light pressure, stop there and call a locksmith. 1
Why do keys snap in locks?
Almost always one of three reasons, often in combination. The key is worn or was copied badly, so the metal has thinned over years of turning. The lock is stiff, so you are putting more force through the key than it can take. Or, on uPVC and composite doors, the door has dropped slightly and the locking points are fighting the frame, so every turn is a struggle the key eventually loses.
That third one matters because it means the snapped key is a warning, not just bad luck. If the door needed a hard pull to lock, the lock mechanism needs attention even after the broken key comes out.
When does the lock actually need replacing?
Only in a few situations. If the key fragment was forced deep and the lock cylinder was damaged getting it out. If the door lock was already failing, gritty, loose or jamming regularly, and the snap was the final symptom rather than the whole problem. Or if the lock is an old, low-security cylinder and you would rather treat the call-out as the moment to upgrade, for example to an anti-snap cylinder, than pay to rescue a lock worth replacing.
A decent locksmith will tell you which situation you are in before any work starts, and will extract rather than replace wherever possible. AHLP’s broken key service is priced from £80 with no call-out fee, and the price is agreed before work begins, so there is no surprise at the door. 2
How do I get a working key afterwards?
Keep both halves. In many cases the two pieces are enough for a key cutter to make a working copy, because together they show the exact cuts. If you have a spare, even better: most key cutting shops can copy it before it too is worn down. And if a lock change is happening anyway, the new lock comes with new keys, so the broken one stops mattering.
If the key snapped in a car door or ignition, do not force that either. Vehicle locks and ignitions are more delicate, and extraction there is a specialist job.
How do I stop it happening again?
Three habits. Replace a key when it starts to look thin, bent or rough, not when it breaks. If a lock starts turning stiffly, deal with the stiffness, because the key is telling you something; a dry graphite spray lubricant made for locks helps, but a stiff uPVC door usually needs its hinges or keeps adjusted, not oil. A lock mechanism that fights you every day is also a repair job in waiting: dealing with a small lock repair now is cheaper than a broken key or a lock replacement later. And never force a key: if it will not turn with normal pressure, something is wrong, and force is how keys snap. 3
If you are reading this with half a key already in the lock, call AHLP on 07700 100146. Sam will tell you over the phone whether it sounds like a simple extraction, agree the price before attending, and get the piece out without damaging the lock wherever possible.
Frequently asked questions
My key snapped in the lock: can a locksmith get it out without a new lock?
In most cases, yes. A locksmith uses professional broken key extractors, fine tools made for exactly this job, to draw the key fragment out, and the door lock usually works normally afterwards. These key extractors reach past the fragment and grip it without chewing up the lock cylinder, which is why the professional version of this job so often ends with the same lock still working. The common reason a lock needs replacing is damage caused by forcing the key or poking the fragment deeper before the locksmith arrives.
How much does it cost to remove a snapped key from a lock?
AHLP’s broken key removal starts from £80 with no call-out fee, and the price is agreed before any work starts. Costs rise mainly when the fragment has been pushed deep or the lock was already failing and needs repair or replacement at the same visit.
Can I get a broken key out myself?
If a stub is sticking out, you can try sliding it straight out with needle-nose pliers or tweezers using light pressure. If it is flush or inside the lock, leave it. Improvised digging with knives, screwdrivers or another key usually pushes it deeper and damages the pins, which is what turns an extraction into a replacement.
Can a new key be made from a snapped key?
Often, yes. Keep both halves: together they show the exact cuts, so a working copy can usually be made from them. A surviving spare key works too, and is worth copying promptly before it wears the same way.
Why did my key snap in the lock in the first place?
Usually a worn or badly copied key, a stiff lock, or a uPVC door that has dropped and is fighting the frame every time you lock it. If the door needed a pull or lift to lock before the key snapped, the door alignment needs attention or the next key will go the same way.
Sources and checks
- Locksmith Call Now, “Key Broke Off in the Lock: When to Stop and When to Try”. Practical extraction guidance: withdraw only a protruding fragment gently, stop if flush or recessed. US source; method is universal.
- AHLP, “Broken Key Removal” service page, ahlp.co.uk (checked 21 October 2026). From £80, no call-out fee, price agreed before work, extraction without damage wherever possible.
- Direct Locksmith, “Key Snapped in the Lock: Safe DIY Steps and When to Call a Pro”. Canadian source; used for do-and-don’t first steps. No oil-based lubricant advice carried over where dry lock lubricant is the safer recommendation.
Sources checked 21 October 2026. Prices are AHLP’s published website prices on that date, not a quote; every job is priced and agreed before work begins.