toolertools
Useful tools for doing stuff.
Free calculators and estimators for real jobs: driveways, slabs, fences, rooms, and roofs. No account. Every result shows its math.
Popular tools
All tools- Gravel Calculator
Estimate how much gravel you need in cubic yards and tons, including waste and cost.
Home & DIY - Concrete Calculator
Calculate concrete volume for slabs, footings, and post holes — in yards and bags.
Home & DIY - Fence Calculator
Estimate posts, panels or pickets, rails, and material costs for a new fence.
Home & DIY - Paint Calculator
Estimate gallons of paint for a room from its dimensions, openings, and coats.
Home & DIY - Roofing Calculator
Estimate roof area, roofing squares, and shingle bundles for gable and hip roofs.
Home & DIY - Dumpster Size Calculator
Estimate what size dumpster you need — 10 to 40 yards — from your debris volume.
Home & DIY
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Each tool shows its formula, assumptions and sources under the result. Prices are US averages; use local pricing when you have it.