Calculators
Quantities, sizes and weights for home projects and welding. Free, no sign-up, and every formula is tested.
Home & DIY
Paint calculator
OpenLitres or gallons for a room, and which can sizes to buy.
Concrete calculator
OpenSlabs, patios and post holes, with premix bag counts.
Flooring calculator
OpenBoxes of laminate, vinyl plank or hardwood for your rooms, with waste.
Fence calculator
OpenPosts, panels or pickets, and bags of concrete for a run of fence.
Tile calculator
OpenTiles and boxes for floors, walls and showers, with waste.
Gravel calculator
OpenCubic yards, tons and bags of gravel or crushed stone for drives and paths.
Mulch calculator
OpenCubic yards or bags of mulch for beds, borders and tree rings.
Topsoil calculator
OpenTopsoil for new lawns, raised beds and levelling, in yards, tons or bags.
Sod calculator
OpenRolls and pallets of sod (turf) for a new lawn, with extra for cuts.
Square footage calculator
OpenArea of rooms, floors and yards in sq ft, m², sq yd and acres, with cost.
Welding & Metal
Metal weight calculator
OpenWeight of plate, bar, tube and angle in steel, stainless, aluminium and more.
Welder generator size calculator
OpenHow many watts your generator needs to run your welder and tools.
Shielding gas usage
Coming soonHow long a cylinder lasts and what it costs per hour.
Heat input calculator
Coming soonkJ/mm from volts, amps and travel speed.
MIG settings calculator
OpenStarting amps, wire size, wire speed, voltage and gas for MIG on mild steel.