Every calculator on the site. Each one takes measurements you can get with a tape and returns an order quantity, with the waste allowance stated and the arithmetic shown.
| Page | What it gives you | Section |
|---|---|---|
| Asphalt calculator | Tons of hot mix for a driveway or patch | Concrete & aggregate |
| Bedding & sheet sizes | What sheets and duvets fit your mattress | Beds |
| Board foot calculator | Board feet from thickness, width and length | Lumber & framing |
| Ceiling fan size for a room | Blade span and downrod, to the ENERGY STAR chart | Rooms |
| Cubic yard calculator | Any material, any depth — the rule behind the whole site | Concrete & aggregate |
| Curtain size calculator | How wide and how long your curtains should be | Rooms |
| Dining room rug size | The rug that keeps every chair on it when pulled out | Rooms |
| How to measure a TV | The size is the diagonal — turn it into width and height, or the other way round | Rooms |
| How to measure for blinds | Inside or outside mount — enter your six measurements and get the size to order | Rooms |
| How to measure for curtains | Three measurements, then the rod, panel and length to buy | Rooms |
| How to measure for replacement windows | Three widths, three heights, two diagonals — get the order size and a square check | Rooms |
| How to measure a room for furniture | Will it fit, will it get through the door, and how much walkway is left | Rooms |
| How to read a tape measure | Every mark on the tape, and a reader that turns any mark into a fraction, decimal and millimetres | Rooms |
| Mat size calculator | The opening and border widths for any print and frame | Rooms |
| Mattress size chart | Every US size, and what fits your room | Beds |
| Roofing square calculator | Squares and bundles, with the pitch handled properly | Exterior & roof |
| Rug size for a bed | What size rug goes under a King or Queen | Rooms |
| Rug size for a king bed | What fits under a King, and what the room allows | Rooms |
| Rug size for a living room | The three placements, and which one your room can take | Rooms |
| Square footage calculator | Any room, any unit, including L-shapes | Rooms |
| Stud calculator | Stud counts at 16 or 24 in centers, with corners and openings | Lumber & framing |
| TV size for your room | The screen size your seating distance actually wants | Rooms |
| Wallpaper calculator | Rolls by vertical drops, with the pattern repeat | Interior |
| Rug size for a queen bed | What fits under a Queen, and what the room allows | Rooms |
| Concrete calculator | Cubic yards and bag counts for a slab, footing or post hole | Concrete & aggregate |
| Gravel calculator | Cubic yards and tons for a driveway, path or drainage bed | Concrete & aggregate |
| Mulch calculator | Cubic yards and 2 cu ft bags for beds and borders | Concrete & aggregate |
| Topsoil calculator | Cubic yards for beds, lawn repair and levelling | Concrete & aggregate |
| Sand calculator | Cubic yards and tons for paver bases, sandboxes and fill | Concrete & aggregate |
| Drywall calculator | Sheets, screws, tape and compound for walls and ceilings | Interior |
| Plywood calculator | Sheet counts for subfloor, sheathing and shelving | Interior |
| Paint calculator | Gallons for walls and ceilings, by coats | Interior |
| Tile calculator | Tile counts and boxes for floors and walls | Interior |
| Sod calculator | Pallets and slabs for a new lawn | Exterior & roof |
| Siding calculator | Squares of siding for exterior walls | Exterior & roof |
| Brick and block calculator | Brick and block counts per square foot of wall | Lumber & framing |
| Concrete block calculator | Block counts, courses and mortar for a CMU wall | Lumber & framing |
These all answer the same question in different materials. If you only want the coverage figures without entering anything, the reference charts are the faster route.