Flooring, Tile & Drywall Calculators
Finish a room without a second trip to the store: count tiles by layout pattern, size the grout, order the right drywall sheets and add up flooring across every room.
6 calculators · Imperial and metric · Free
Tile Calculator Tiles, boxes, grout and thinset with pattern waste for any layout. Grout Calculator Grout by tile size, joint width and thickness, in pounds or kg and bags. Flooring Calculator Multi-room area, boxes with waste, underlayment, trim and cost. Drywall Calculator Sheets, mud, tape and screws for walls and ceilings, minus openings. Square Footage Calculator Several room or lot shapes added together in ft², m², yd² and acres. BTU Calculator Room air conditioner size from the ENERGY STAR chart, plus a rough heating estimate.
Which calculator do I need?
| Project | Start with | Then |
|---|---|---|
| Tiled floor, backsplash or shower | Tile calculator | Grout |
| Laminate, vinyl plank or hardwood floor | Flooring calculator | Underlayment and baseboard are included |
| New walls or ceiling | Drywall calculator | Mud, tape and screws are included |
| Finishing a basement | Drywall calculator | Flooring, tile for the bathroom |
A typical order of work
- Drywall: hang, tape and finish the walls and ceiling.
- Prime and paint walls and ceilings while the floor is still bare.
- Tile and flooring: lay the floor once the messy work is done.
- Trim: fit baseboards last, which also hides the expansion gap that floating floors need at the walls.
Buying tips for finishes
- Allow for the pattern. Straight layouts typically need about 10% extra; diagonal and herringbone layouts need 15–20% because of the angled cuts.
- Check batch numbers. Tile and flooring can vary in shade between production runs. Buy everything at once and check that the boxes match.
- Keep a spare box. A few leftover tiles or planks make future repairs invisible.
- Read the box. Coverage per box, recommended trowel size and grout joint width are printed on the packaging; use those figures in the calculators.