Calculator Category

Engineering and Construction Calculators

Use engineering, construction, HVAC, road, roofing, modulation, pump, pool, and material calculators.

engineering calculatorsconstruction calculatorsroof pitch calculatorboiler feed pump calculator

Tools in This Category

Pick the tool that matches your task. Existing tool URLs stay short and stable.

10 Tools

Calculate brake mean effective pressure from torque, displacement, and engine cycle, with results in bar, psi, and kPa.

Calculate solar elevation, azimuth, zenith angle, shadow length, sunrise, and sunset from location, date, and time.

Convert horsepower to watts or kilowatts, convert watts back to HP, and compare mechanical horsepower with metric horsepower.

Calculate AM modulation index, percent modulation, sideband power, total power, and bandwidth from carrier and message values.

Calculate FM modulation index, Carson bandwidth, frequency deviation, and approximate occupied range for frequency modulation.

Calculate roof pitch from rise and run, convert pitch to degrees or percent slope, and check a roof pitch chart.

Estimate air conditioner tonnage, BTU per hour, and nearest common HVAC size from square footage and room conditions.

Calculate pool salt by gallons or litres, current ppm, target ppm, bag size, and get pounds, kg, bags, and a shareable result.

Size boiler feed pump flow, total dynamic head, and motor power with metric and imperial inputs.

Estimate bitumen quantity, weight, and cost for prime coat, tack coat, spray seal, and asphalt mix.