Electrical & Plumbing

Wire sizing, circuit breakers, voltage drop, pipe flow, water heaters, and HVAC sizing for home and commercial projects.

Determine the recommended AWG wire gauge based on current, distance, voltage, and acceptable voltage drop.

Calculate the required breaker amperage and wire gauge for your electrical load with NEC compliance checking.

Calculate water flow rate, velocity, and friction loss based on pipe diameter, pressure, length, and material.

Calculate voltage drop for residential wiring and check compliance with the NEC 3% recommendation.

Calculate the BTU capacity needed for heating and cooling based on room size, insulation, climate, and windows.

Calculate total electrical load by circuit type and determine the service panel size and main breaker needed.

Determine the right water heater tank size or tankless GPM based on household size, usage patterns, and water temperatures.

Calculate the minimum drain pipe slope and total drop needed based on pipe diameter and run length per IPC/UPC code.

Calculate static pressure from elevation, friction pressure loss, and resulting dynamic pressure at the outlet.

Convert between amps, watts, and volts. Enter any two values to calculate the third, plus energy cost estimates.