Free tool · Metric & imperial
Gym Flooring Calculator
Measure your space, pick a tile type, and get the exact number of tiles to order - including an allowance for the cuts you'll inevitably make around walls and corners.
The home gym standard - dense, heavy, happy under big dumbbells.
Your result
Floor area
12.5m²
Tiles needed
14
1m x 1m rubber (20mm), incl. 10% allowance
Sold as
Singles
Most 1m rubber tiles are sold individually
Affiliate link - we may earn a commission at no extra cost to you. Lay tiles from the centre of the room in a brick pattern, keeping cut tiles to the edges where skirting hides them.
What dumbbell training actually needs
Flooring advice online is written for people dropping barbells from overhead. A dumbbell area has gentler requirements: you need to protect the floor from knocks and scrapes, deaden noise, and give yourself a stable, grippy surface. For most adjustable dumbbell setups, 20mm rubber is the no-regrets choice and 12mm EVA foam is the budget one.
One thing flooring does not change: adjustable dumbbells should never be dropped. Selectorised mechanisms hate impact, and every manufacturer we've reviewed voids the warranty for it. The flooring is there for controlled set-downs, the floor underneath, and your downstairs neighbours.
Fitting tips from people who have done it: lay tiles from the centre of the room outwards in a brick pattern, keep every cut tile at the edges where skirting hides the line, and use a sharp Stanley knife with more spare blades than you think you need.
Common questions
How thick should gym flooring be for dumbbells?
For a dumbbell-only area, 12mm EVA foam mats or 15mm rubber are enough if you set weights down with control. If you train near failure and weights sometimes come down hard, or you use 30kg+ dumbbells, go for 20mm rubber. Adjustable dumbbells should never be dropped regardless of flooring - impact damages the mechanism and voids the warranty.
How many tiles do I need for a single UK garage?
A typical single UK garage is around 4.8m x 2.6m, which is 12.5m². That is thirteen 1m x 1m tiles, or about fifty 50cm x 50cm tiles, before a cutting allowance. Use the calculator above with your exact measurements - garages vary a lot, and a 10% allowance for offcuts is sensible.
Can I put gym flooring on top of carpet?
You can for a light dumbbell area, but it is not ideal. Carpet compresses unevenly, so tiles can rock slightly and joints can open up. Interlocking tiles help. For heavy lifting or benches and racks, a hard floor underneath is much better.
Rubber tiles or EVA foam mats - which should I buy?
EVA foam is cheaper, lighter and fine for dumbbells under about 20kg, bodyweight work and yoga. Rubber is denser, far more durable, and the right choice for heavy dumbbells, benches and any barbell work. If your budget stretches to rubber, buy rubber - foam dents permanently under heavy equipment.
Do I really need gym flooring under a dumbbell area?
If you train on a hard floor, yes. It protects the floor from knocks, quietens your sessions, protects the dumbbells themselves (especially adjustable sets, which hate impact), and gives you a stable, grippy surface. On carpet it is less essential but still keeps things stable and protects against sweat and scuffs.