Tested
Ice and Water Shield Calculator
Rolls of ice and water membrane for an area.
Construction Calculators
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Free construction calculators for everyday questions, from quick checks to detailed breakdowns.
Construction tools (73)
- Tested
Insulation R-Value Calculator
Total R-value and U-value of layers in series.
Construction Calculators
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Lawn Mowing Time Calculator
Time to mow a lawn from its area, mower width and walking speed.
Construction Calculators
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Lumber Weight Calculator
Weight of boards or beams from species, actual dimensions and quantity (air-dried, 12% moisture).
Construction Calculators
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Metal Roofing Calculator
Number of metal roofing panels across a roof width.
Construction Calculators
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Metal Weight Calculator
Weight of a plate, round bar or square bar in common metals.
Construction Calculators
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Money Weight Calculator
Weight of an amount of US bills or coins.
Construction Calculators
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Mulch Calculator
Cubic yards of mulch for a bed.
Construction Calculators
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Paint Calculator
Paint needed for a room.
Construction Calculators
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Pipe Weight Calculator
Weight of a hollow round pipe from its outside diameter, wall thickness and length.
Construction Calculators
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Plywood Calculator
Sheets of plywood or OSB for an area.
Construction Calculators
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Polymeric Sand Calculator
Bags of polymeric sand for paver joints.
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.