Science & Engineering Calculators
Solve common physics, science and engineering calculations.
Speed Distance Time Calculator
Calculate speed, distance or travel time when the other two values are known.
Calculate Now → 🧮Density Calculator
Calculate material density from mass and volume.
Calculate Now → 🧮Force Calculator
Calculate force using Newton’s second law (force = mass × acceleration).
Calculate Now → 🧮Kinetic Energy Calculator
Calculate kinetic energy from mass and velocity.
Calculate Now → 🧮Potential Energy Calculator
Calculate gravitational potential energy near Earth’s surface.
Calculate Now → 🧮Ohm’s Law Calculator
Calculate voltage, current or resistance when the other two are supplied.
Calculate Now → 🧮Electrical Power Calculator
Calculate electrical power and energy consumption from voltage, current and time.
Calculate Now → 🧮Torque Calculator
Calculate torque from applied force and perpendicular lever-arm distance.
Calculate Now → 🧮Pressure Calculator
Calculate pressure from applied force and contact area.
Calculate Now → 🧮Work Calculator
Calculate mechanical work from force, distance and angle between them.
Calculate Now → 🧮Spring Potential Energy Calculator
Calculate elastic potential energy stored in a spring using Hooke’s law.
Calculate Now → 🧮Electrical Resistance Calculator
Calculate electrical resistance from voltage and current using Ohm’s law.
Calculate Now → 🧮Three Phase Power Calculator
Estimate three-phase real power from line voltage, current and power factor.
Calculate Now → 🧮Power Factor Calculator
Estimate power factor from real power and apparent power.
Calculate Now → 🧮Voltage Drop Percentage Calculator
Calculate voltage drop as a percentage of nominal voltage.
Calculate Now → 🧮Electrical Energy Consumption Calculator
Calculate electrical energy consumed by a device from power and operating time.
Calculate Now → 🧮DC Voltage Drop Calculator
Estimate DC cable voltage drop using current, cable length and conductor resistance.
Calculate Now → 🧮Mechanical Work Calculator
Calculate mechanical work from force and displacement in the direction of force.
Calculate Now → 🧮Power from Work Calculator
Calculate average power from work done and elapsed time.
Calculate Now → 🧮Final Velocity Calculator
Calculate final velocity from initial velocity, acceleration and elapsed time.
Calculate Now → 🧮Parallel Resistance Calculator
Calculate equivalent resistance for two resistors connected in parallel.
Calculate Now → 🧮Cable Voltage Drop
Estimate single-phase voltage drop using current, resistance and cable length.
Calculate Now → 🧮Three-Phase Current
Estimate three-phase current from power, voltage and power factor.
Calculate Now → 🧮Water Heating Energy
Estimate energy to heat water using mass, specific heat and temperature rise.
Calculate Now → 🧮Hydraulic Pump Power
Estimate hydraulic power from flow rate and pressure.
Calculate Now → 🧮Pipe Flow Velocity
Estimate fluid velocity from flow rate and pipe cross-sectional area.
Calculate Now → 🧮Linear Thermal Expansion
Calculate length change from expansion coefficient and temperature change.
Calculate Now → 🧮Mechanical Power from Torque
Calculate shaft power from torque and rotational speed.
Calculate Now → 🧮Belt Speed
Calculate belt linear speed from pulley diameter and rotational speed.
Calculate Now → 🧮Three-phase Apparent Power
Calculate three-phase apparent power from line voltage and current.
Calculate Now → 🧮Pump Efficiency
Estimate pump efficiency from hydraulic output and input power.
Calculate Now → 🧮Pressure to Water Head
Convert pressure in kPa to approximate water head in metres.
Calculate Now → 🧮Heat Loss Through Wall
Estimate steady heat transfer through a wall using U-value and temperature difference.
Calculate Now → 🧮kWh to Megajoule Converter
Convert energy from kilowatt-hours to megajoules.
Calculate Now → 🧮Pipe Internal Volume
Calculate liquid volume inside a cylindrical pipe.
Calculate Now → 🧮Air Compressor Specific Power
Calculate compressor input power per unit of delivered airflow.
Calculate Now → 🧮Electric Motor Input Power
Estimate motor electrical input power from shaft output and efficiency.
Calculate Now → 🧮Pump Specific Energy Consumption
Calculate electrical energy consumed per cubic metre pumped.
Calculate Now → 🧮Heat Exchanger Effectiveness
Calculate actual heat transfer as a percentage of maximum possible heat transfer.
Calculate Now → 🧮Pipe Flow Velocity
Calculate average fluid velocity from volumetric flow and pipe diameter.
Calculate Now → 🧮Hydraulic Power
Calculate hydraulic power from pressure and flow rate.
Calculate Now → 🧮Pump Hydraulic Power
Estimate hydraulic power from flow, head and fluid density.
Calculate Now → 🧮Darcy-Weisbach Pressure Drop
Estimate pipe pressure drop using friction factor, length, diameter and velocity.
Calculate Now → 🧮Sensible Heat Energy
Calculate heat energy required for a temperature change.
Calculate Now → 🧮Single-phase Current Calculator
Estimate current from single-phase power, voltage and power factor.
Calculate Now → 🧮Cable Power Loss
Calculate resistive cable power loss using current and resistance.
Calculate Now → 🧮HVAC Sensible Cooling Load
Estimate sensible cooling load using airflow and temperature difference.
Calculate Now → 🧮Thermal Efficiency
Calculate useful heat output as a percentage of heat input.
Calculate Now → 🧮Voltage Regulation Percentage
Calculate voltage regulation from no-load and full-load voltage.
Calculate Now → 🧮Transformer Impedance Voltage
Estimate impedance voltage from percentage impedance and rated voltage.
Calculate Now → 🧮Pump Hydraulic Efficiency
Calculate hydraulic output power as a percentage of input power.
Calculate Now →