Calculators

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 angle cuts needed for knee bracing based on the desired angle and brace dimensions.

Estimates the cost and design of a wall along the U.S.-Mexico border, based on user-defined parameters. This calculator is for illustrative purposes only and does not represent an official cost estimate.

Calculates the pitch diameter of a metric screw thread, given its nominal diameter and pitch.

This calculator estimates the materials and cost required for building a livestock fence based on the perimeter of the area, the type of fence, and material costs.

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

Calculates the optimal spacing and number of recessed lights needed for a room, based on room dimensions and desired lighting levels.

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

This calculator estimates the storage capacity of a grain bin based on its diameter, height, and grain test weight.