Example engineering calculations
Worked, unit-aware calculation worksheets across structural, mechanical, electrical and more. Open any example into your own workspace to edit and reuse.
315 examples
Pitot Tube Velocity
Flow velocity from the dynamic pressure measured by a Pitot tube.
Manometer Pressure Difference
Pressure difference indicated by the height of liquid in a manometer.
Bernoulli Pressure Change
Pressure at a second point along a streamline from Bernoulli’s equation (same elevation).
Bulk Modulus of a Fluid
Bulk modulus of a fluid from a pressure change and the volume change it causes.
Specific Energy in Open Channel Flow
Specific energy of open-channel flow from depth and velocity.
Insulation R-Value
Thermal resistance per unit area (R-value) of an insulation layer.
Building Heat Loss (U-Value)
Steady heat loss through a building element from its U-value, area and temperature difference.
Wien’s Displacement Law
Peak emission wavelength of a hot body from its temperature.
Overall Heat-Transfer Coefficient
Overall U-value of a wall with convection on both sides and conduction through it.
Biot Number
Biot number comparing internal conduction to surface convection during transient heating.
Lumped-Capacitance Time Constant
Thermal time constant of a small body cooling by convection.
Aerodynamic Lift Force
Lift generated by a wing from its lift coefficient, speed and area.
Aerodynamic Drag of an Aircraft
Drag on an aircraft from its drag coefficient, speed and reference area.
Lift-to-Drag Ratio
Aerodynamic efficiency of a wing as the ratio of lift to drag coefficients.
Wing Loading
Wing loading of an aircraft from its weight and wing area.
Thrust-to-Weight Ratio
Thrust-to-weight ratio of a vehicle from its thrust and weight.
Rocket Equation (Delta-v)
Velocity change a rocket can achieve from its mass ratio and exhaust velocity.
Circular Orbital Velocity
Speed needed for a circular orbit at a given radius around a planet.
Escape Velocity
Speed needed to escape a planet’s gravity from a given radius.
Stall Speed
Minimum flying speed of an aircraft at maximum lift coefficient.
Banked Turn Angle
Bank angle for a coordinated (no-slip) turn at a given speed and radius.
Ideal Gas Amount (Moles)
Number of moles of an ideal gas from pressure, volume and temperature.
Solution Molarity
Molar concentration of a solution from moles of solute and volume.
Solution Dilution
Concentration after diluting a stock solution to a larger volume.