TrueSquare Calc

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Free Android app — works offline, no pop-up ads.
Get it on Google Play
Construction & DIY calculators. Works offline. No pop-up ads.
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Reference charts

Concrete Bag Chart
Cubic yards and 80, 60 and 40 lb bags of concrete for common slab sizes 4, 5 and 6 inches thick, plus bags per cubic yard.
Stair Riser Chart
Number of risers, riser height, treads and total run for total rises from 12" to 12 ft, with a 7 3/4" maximum riser and 10" treads (IRC R311.7.5).
Roof Pitch Chart
Roof pitches from 1/12 to 12/12 in degrees, with the slope factor, the common rafter length per foot of run and the hip and valley factors.
Board Foot Chart
Board feet for 1x, 2x and timber sizes from 8 to 16 ft long, plus board feet per linear foot of 4/4 to 12/4 hardwood.
Fraction to Decimal Chart
Every 1/64" from 1/64 to 1 inch as a decimal inch and in millimeters, plus decimals rounded to the nearest 1/8, 1/16 and 1/32 like a tape measure.
Inches to Feet Chart
Inches to decimal feet (1" = 0.0833 ft) and 1 to 120 inches in feet and inches, plus sixteenths of an inch and decimal feet back to inches.
mm to Inches Chart
1 to 100 millimeters in decimal inches and to the nearest 1/16", plus common metric sizes up to 3 m in feet and inches.

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