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Calculate illuminance (foot-candles) at a surface from ...
Convert between lumens, watts, and luminous efficacy. Use ...
Calculate total lumens needed and number of light fixtures ...
Calculate BTU output needed from a radiator for a given ...
Calculate common rafter length from run and pitch. Use this ...
Calculate ramp length, slope ratio, and ADA compliance for ...
Calculate linear feet of rebar needed for a concrete slab. ...
Calculate the weight of rebar by bar size and length. Use ...
Calculate roof pitch, angle, and slope multiplier from rise ...
Calculate roofing squares and bundles of shingles needed. ...
Estimate roofing squares, shingles, and material needs. Use ...
Estimate BTU capacity needed to heat or cool a room. Use ...
Calculate room area, volume, and perimeter from dimensions. ...
Calculate squares of siding needed to cover exterior walls. ...
Calculate spray foam board-feet needed for a surface. Use ...
Calculate square footage from length and width. Use this ...
Estimate stair risers, tread depth, and stair run from ...
Calculate number of wall studs needed for a framed wall. ...
Calculate number of tiles needed for a floor or wall. Use ...
Calculate U-value (thermal transmittance) from R-value and ...
Calculate minimum ventilation CFM for a space based on area ...
Calculate vinyl siding panels and squares needed. Use this ...
Calculate rolls of wallpaper needed for a room. Use this ...
Estimate water heater tank size or first-hour rating ...
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.