Engineering calculations
Technical calculators for design and engineering
Traceable calculations based on technical standards – with clear inputs, visual results, and documented assumptions.
441Calculators
Engineering areas
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Categories connect calculators that build on one another in a typical engineering workflow.
Control engineering→Analyse and design plant models, step responses, time-domain metrics and standard controllers with transparent calculations.Building physics→Calculate thermal protection, heat emitters, pressurization, and outdoor air for building design.Energy→Assess PV yield, storage, EVs and heat pumps with transparent annual balances.Vehicle costs→Compare tire strategies, energy use, and recurring costs for your driving profile.Statics & strength→Section properties, bending stress and beam deflection for static or slowly varying loads.Engineering mechanics→Calculate forces, stresses, deformations, motion, vibrations and hydrostatics with transparent models.Fundamentals→Physical principles, units, and basic equations for preliminary engineering work.Fits→Limit sizes, tolerance zones, clearances, and interference according to ISO 286.Bolts→Thread geometry, clearance holes, preload, torque, stress, and proof load.Shafts→Shaft pre-design, parallel keys, cylindrical interference fits, plus clutch/coupling engagement torque and brake sizing.Gears→Ratio, speed, and torque for simple gear pairs, plus full geometry and ISO 6336 load rating for cylindrical gears.Belt & chain drives→Belt length, wrap angle, pulley speed and tension ratio, plus chain length, center distance, sprocket pitch diameter and chain speed for power-transmission drives.Bearings→Dynamic and static rolling-bearing life assessment, plus plain (journal) bearing load, clearance, Sommerfeld number and film thickness.Springs→Compression, extension, and Belleville spring calculations.E-Mobility→Charging time, wallbox current, charging losses, cost, and tariff comparison for electric vehicles.Hydraulics→Pre-size cylinders, lines, and hydraulic accumulators with transparent physical models.DC & fundamentals→Ohm's law, power, energy, resistor networks, voltage dividers, conductor resistance, sources with internal resistance and electrostatic forces.AC & three-phase→Impedance, power factor, reactive-power compensation, wye and delta connections, short-circuit power, cable sizing and earthing resistance.Machines & transformers→DC motors, induction motors (slip, Kloss equation) and transformers: ratio, short circuit, part-load efficiency and voltage regulation.Electronics & components→RC and RL transients, capacitor and inductor networks, capacitance and inductance from geometry, semiconductor junction temperature, diode losses and rectifier ripple.Measurement→Wheatstone bridge, accuracy class, range extension and internal-resistance determination. Strain-gauge technology has its own cluster.Strain gauges→Gauge factor, Wheatstone quarter, half and full bridges, calibration, lead-wire and temperature effects, force, bending, torque and pressure transducers, and rosette evaluation after Keil.Mechanics→Torque, power, stress, strain and springs for first-pass design and lifting gear.Fluids & heat→Pre-size flow, pipe regimes, Bernoulli pressure, heat and conduction.Pneumatics→Pre-size cylinder forces, air consumption, flow, and pressure losses.Manufacturing→Calculators for work preparation and the shop floor: sheet-metal development, blanks, semi-finished product weights and material data.Joints→Nominal stresses and pre-design sizing for bonded, welded, soldered/brazed, riveted and pinned joints.