Home & Trade
Paint, concrete, flooring and other project calculators.
Home and trade tools estimate the materials and measurements behind building, renovation, and yard projects. Here that covers figuring paint, flooring, tile, wallpaper, mulch, concrete, and fencing quantities, converting sheet metal gauges and pipe sizes, cross-referencing a battery or a light bulb base, sizing a firewood cord, and estimating an HVAC load. Homeowners, contractors, and tradespeople reach for them to plan a shopping list or check a measurement before they buy or cut.
Concrete CalculatorVolume of concrete.Sheet Metal Gauge ConverterGauge to mm by metal type.Pipe Size ConverterNPS, DN & actual OD.Battery Cross-ReferenceEquivalent battery codes.Light Bulb Base ChartE26, E27, GU10, bayonet.Firewood Cord CalculatorCords & face cords from a stack.Paint CalculatorLitres of paint needed.Flooring CalculatorBoxes of flooring needed.Tile CalculatorTiles for an area.Fence CalculatorPosts and panels needed.Wallpaper CalculatorRolls of wallpaper.Mulch & Soil CalculatorBags of mulch or soil.HVAC Load EstimatorRough heating/cooling load.
Frequently asked questions
- Are the home and trade calculators free?
- Yes. Every calculator and converter in this category is free, with no account or sign-up and no limit on how many times you use it. You can run the same estimate as many times as a project needs.
- Is there anything to install?
- No. These tools run in a normal web browser on a desktop, tablet, or phone. That means you can check a figure from the job site or the hardware aisle without downloading an app.
- Is it safe to use these tools?
- These calculators run in your browser and ask only for the measurements of your project, not for any personal details or a login. Treat the results as estimates for planning and buying, and add a margin for waste or offcuts as your trade normally would.
- Which tool do I use for a given project?
- For surface coverage, match the tool to the material: the Paint Calculator for walls, the Flooring and Tile Calculators for floors, the Wallpaper Calculator for a feature wall, and the Mulch & Soil Calculator for beds. For structure and reference work, use the Concrete Calculator for a pour, the Fence Calculator for a run of fencing, and the converters and charts for gauges, pipe sizes, batteries, and bulb bases.