14 free tools
Engineering Calculators
Fast, transparent engineering maths — electrical, mechanical and structural, each with the formula and units laid out.
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Beam Load Calculator
Support reactions, maximum shear and bending moment for a simply supported beam.
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Force Calculator
Calculate force from mass and acceleration with Newton's second law.
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Ohm's Law Calculator
Enter any two of voltage, current and resistance — get the third plus power instantly.
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Power Calculator
Calculate power as the rate of doing work — in watts, kilowatts and horsepower.
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Pressure Calculator
Calculate pressure from a force spread over an area — in pascals, bar and psi.
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Stress Calculator
Calculate mechanical (axial) stress from a force acting on a cross-sectional area.
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Torque Calculator
Calculate rotational torque from an applied force, lever length and angle.
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Work Calculator
Calculate the work done when a force moves an object over a distance.
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Kinetic Energy Calculator
Calculate the energy an object carries because it is moving.
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Strain Calculator
Calculate engineering strain from how much a material stretches.
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Young's Modulus Calculator
Calculate a material's stiffness from stress and strain.
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Fluid Pressure Calculator
Calculate the pressure a fluid exerts at a given depth.
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Reynolds Number Calculator
Work out whether a flow is laminar or turbulent.
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Resistance Calculator
Calculate the resistance of a wire from its material and dimensions.
About these tools
Each tool states the formula, variables and units it uses, so you can check the method and trust the result for study, quick estimates or a sanity check on a design. Browse more in our full tool directory or read the guides in our articles.
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