Tested
Concrete Block Fill Calculator
Grout or concrete needed to fill block cores.
Construction Calculators
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Free construction calculators for everyday questions, from quick checks to detailed breakdowns.
Construction tools (9)
- Tested
Concrete Mix Calculator
Cement, sand and aggregate for a nominal volume mix such as 1:2:4.
Construction Calculators
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Concrete Reinforcing Mesh Calculator
Mesh sheets for a slab, allowing for overlaps.
Construction Calculators
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Concrete Steps Calculator
Concrete volume for solid stacked steps.
Construction Calculators
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Concrete Volume Calculator
Cubic yards of concrete and bags needed for a slab, footing or pad.
Construction Calculators
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Concrete Weight Calculator
Weight of a volume of concrete from its density.
Construction Calculators
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Post Hole Concrete Calculator
Concrete per post hole after the post's volume.
Construction Calculators
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Rebar Quantity Calculator
Bars and total length of rebar in a grid across a slab.
Construction Calculators
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Sonotube Calculator
Concrete volume and bags for round column forms.
Construction Calculators
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All construction calculators by topic (73)
Concrete
Earthwork
Estimating
Flooring
Insulation
Landscaping
Machining
Materials
Mechanical
Roofing
Volume
About construction calculators
Construction Calculators help you turn a question into a clear, checkable answer. Each tool lists its inputs, shows the formula it relies on and explains how to read the result.
Browse by topic using the filters, or search for a specific tool. Tools that are still being built are clearly marked as previews and are not presented as finished calculators.
Frequently asked questions
Are the construction calculators calculators free?
Yes. Every calculator on Calculator Atlas is free to use and requires no sign-up.
How are results verified?
A calculator is only published after its formula has been implemented, tested against independently computed reference values. It is an automated check, not a professional review.