Symptoms
- Chair tilts consistently in one direction
- One leg visibly shorter or longer than the others
- Chair feels unstable even standing still
Likely causes
- CommonManufacturing inconsistency in leg lengthEven mass-produced furniture can have small measurement variances.
- CommonOne leg loosened or shifted in its socketA leg that isn't seated fully will sit lower than the others.
- PossibleWarping in one leg from moisture or heat exposureA single leg near a heat source or window can warp independently.
What to do
- Place the chair on a known-flat, hard floor to rule out flooring as the cause.
- Measure each leg from the floor to the seat frame with a tape measure to identify the odd one out.
- Check that each leg is fully seated in its socket or mounting bracket if they're removable.
- If one leg is shorter, add a felt shim or adjustable glide to bring it level with the others.
- If a leg is warped or damaged, consider replacing just that leg rather than all four.
- Recheck balance by pressing down on each corner after adjustments.
Tools and parts
- Tape measure
- Felt shims or adjustable glides
Adjustable furniture leg glideSearch: “adjustable furniture leg glide leveler”
Replacement chair legSearch: “replacement chair leg universal”
When to call a pro
A furniture repair pro can precisely trim or replace a leg to match the others exactly if a shim isn't a good long-term solution.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.