Engineering guides
Engineering formulas & units
A quick-reference library: each formula with its symbols, SI units, assumptions and a worked example.
Free PDF: 50 essential formulasSix A4 pages: every formula with a sketch, its symbols, SI units and assumptions.Download PDF
50 essential mechanical engineering formulas with units and applications
One page with the fifty formulas mechanical engineers use most, grouped by subject, with SI units, where each is used, and links to full worked examples.4 min readStrength of materials formulas with units and examples
Ten formulas for stress, strain, bending, torsion, deflection and buckling, each with its symbols, SI units, assumptions and a worked example.7 min readThermodynamics formulas with units and examples
Ten core thermodynamics formulas, from the ideal gas law to entropy change, each with symbols, SI units, assumptions and a worked example.6 min readFluid mechanics formulas with units and examples
Ten fluid mechanics formulas, from hydrostatic pressure to pump power and drag, each with symbols, SI units, assumptions and a worked example.6 min readManufacturing calculations: machining, sheet metal and tool life
Ten shop-floor formulas for speeds, feeds, machining time, cutting power, blanking force, bend allowance and tool life, with worked examples.6 min readSI units, conversions and dimensions for engineers
The SI base and derived units, prefixes, the conversions engineers use every day, and how dimensional analysis catches mistakes in a formula.4 min readNeed this designed or explained for your team?
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