MyBuildTool by Arity Craft
Know what you need before you buy.
Simple construction and renovation calculators that turn measurements into material quantities, costs and project estimates.
No account, no paywall, no email. Tell us what you're building. We'll tell you what you need.
What are you building?
Pick a calculator and you will have your answer in under a minute.
Paint Calculator
Work out how much paint you need for any room or wall.
Concrete Calculator
Volume of concrete for a slab, footing, path or column.
Tile Calculator
How many tiles and boxes you need for a floor or wall.
Flooring Calculator
How many packs of flooring a room needs, with waste allowed for.
Construction Cost Calculator
Build a project estimate from materials, labour, waste and markup.
How it works
1. Enter your measurements
Length, width, height. Metric or imperial — switch at any time and the numbers come with you.
2. Get your quantities
Litres, tiles, boxes, cubic metres, bags. Rounded to what shops actually sell.
3. Add your prices
Your supplier, your rates. We never invent a price, so the cost is one you can defend.
4. Keep it with the project
Save calculations against a job so next week you can still see how you got there.
Built for real projects
A calculation on its own is useful for ten minutes. Grouped into a project it is useful for months — what you ordered for the bathroom, what it came to, and what you would quote next time.
- Every calculator shows the assumptions behind the answer
- Quantities rounded to tins, boxes and packs you can actually buy
- Metric and imperial, switched without retyping anything
- Your prices only — we hold no price data and guess nothing
Paint Calculator
Work out how much paint you need for any room or wall.
Concrete Calculator
Volume of concrete for a slab, footing, path or column.
Tile Calculator
How many tiles and boxes you need for a floor or wall.
Flooring Calculator
How many packs of flooring a room needs, with waste allowed for.
Calculating is free. Always.
Pro adds the parts that only matter once you are running jobs: saved projects, shopping lists, estimates and PDF export.
Free
Every calculator, no account needed.
- Unlimited basic calculations
- Every calculator
- Metric and imperial units
Save up to 3 projects with a free account.
Pro
For tradespeople and contractors who quote for a living.
- Unlimited basic calculations
- Every calculator
- Metric and imperial units
- Saved projects
- Project history
Free accounts save up to 3 projects.