Engineering Calculators
Unit conversion, electrical, civil & more.
Density Calculator
Calculate density, mass, or volume using the density formula D = M/V.
Pipe Weight Calculator
Calculate the weight of steel, PVC, or other pipe by outer diameter, thickness, and length.
Concrete Calculator
Estimate concrete volume and bags needed for slabs, footings, columns, and walls.
Steel Weight Calculator
Calculate the weight of steel bars, plates, pipes, and sections by dimensions.
Voltage Calculator
Calculate voltage using Ohm's Law (V = IR) or power equations (V = P/I).
Ohm's Law Calculator
Calculate voltage, current, resistance, or power using Ohm's Law and Watt's Law.
Watt Calculator
Calculate electrical power in watts from voltage and current, or resistance and voltage.
Resistance Calculator
Calculate total resistance for series and parallel resistor circuits.
Power Consumption Calculator
Estimate electricity cost by entering device wattage, usage hours, and electricity rate.
Fuel Consumption Calculator
Calculate fuel consumption rate, total fuel used, and fuel efficiency in L/100km or MPG.
Speed Calculator
Calculate speed, distance, or time using the formula Speed = Distance / Time.
Force Calculator
Calculate force, mass, or acceleration using Newton's Second Law (F = ma).
Torque Calculator
Calculate torque from force and lever arm length, or convert between torque units.
Pressure Calculator
Calculate pressure from force and area, or convert between pressure units.
Area Conversion Calculator
Convert between area units: sq meters, sq feet, acres, hectares, sq km, and more.
Unit Conversion Calculator
Convert between length, weight, temperature, volume, speed, and other units.
Material Cost Calculator
Estimate total material cost for construction or manufacturing projects by quantity and unit price.
Load Calculator
Calculate structural loads including dead load, live load, and total load per unit area.
Asphalt Calculator
Calculate the amount and cost of asphalt needed for driveways, roads, and parking lots.
Brick Calculator
Calculate the number of bricks needed for any wall with mortar joints.
Cement Calculator
Calculate the amount of cement bags, sand, and gravel needed for concrete or mortar mixes.
Tile Calculator
Calculate the number of tiles needed for any floor or wall area with grout lines and waste.
Flooring Calculator
Calculate flooring material needed for any room with waste factor and cost estimate.
Paint Calculator
Calculate the number of paint cans or litres needed to paint any room or surface.
Solar Panel Calculator
Calculate how many solar panels you need, estimated energy output, and payback period.
Battery Life Calculator
Calculate battery life, runtime, and capacity needed for any device or system.
Voltage Drop Calculator
Calculate voltage drop across cables and wires for electrical systems.
Cable Size Calculator
Calculate the correct cable size (cross-section area) for electrical installations.
Water Tank Calculator
Calculate water tank volume, capacity, and required size for household or commercial use.
Excavation Calculator
Calculate excavation volume, cut and fill quantities, and earthwork cost estimates.
Gravel Calculator
Calculate how much gravel, crushed stone, or fill material you need for any project.
Roofing Calculator
Calculate roofing materials, shingles, and cost for any roof pitch and area.
Stair Calculator
Calculate stair rise, run, number of steps, and stringer length for any total rise.
Beam Deflection Calculator
Calculate beam deflection and bending stress for simply supported and cantilever beams.