Calculators

Calculates the area of a rectangular space given its width and length, and converts the result between various area units.

Calculates the depth of a countersunk hole based on the screw head diameter and countersink angle.

Calculates the thread pitch of a threaded fastener, given measurements.

Calculates the fabric width and length needed for making curtain panels, taking into account factors like fullness and hem allowance.

Calculates the materials needed for board and batten siding, including boards, battens, and fasteners.

Calculates the miter angle needed to create a tight joint between two pieces of material at a given angle.

Calculates the payback period for a passive house investment by comparing initial costs with energy savings.

Calculate the volume of a rectangular box in cubic meters and convert between various volume units.

Calculates the number of panels needed to build a round pen, based on the desired diameter and panel length.

Calculates the ideal mirror size based on the width of your bathroom vanity or sink.