How to open locked door knobs in a house

Written by elizabeth knoll
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How to open locked door knobs in a house
It is possible to unlock a keyless doorknob from outside a room. (door knob image by Michael Shake from

The most common rooms in a house to have locks on the door are the bathroom and master bedroom, and the most commonly used lock indoors is built into the doorknob. A key is not required to lock or unlock that kind of lock. Instead, either a button or knob is used to engage the lock from inside the room. If a keyless lock becomes locked without anyone in the room to unlock it, it is possible to get it unlocked from the other side of the door.

Skill level:

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Things you need

  • Small screwdriver
  • Paper clip
  • Coin

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  1. 1

    Open the locked doorknob with a screwdriver. Insert a small screwdriver into the hole in the centre of the doorknob. Use the screwdriver to feel around inside the doorknob for a small slot into which the screwdriver fits. Then twist the screwdriver clockwise. This will cause the lock to rotate into the unlocked position, and the doorknob should be unlocked.

  2. 2

    Unlock the doorknob with a paper clip. Insert an unbent paper clip into the hole in the centre of the doorknob. Push the paper clip in until you hear a pop. Then the door should be unlocked.

  3. 3

    Open the locked doorknob with a coin. Place a coin in the slot on the doorknob. Turn the coin clockwise to unlock the door.

Tips and warnings

  • Practice unlocking the door from outside the room a few times for experience in case of an emergency.

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