Science & Engineering
Physics, chemistry, material properties, and engineering calculators.
11 tools available
Science & Engineering tools cover the calculations that span physics, chemistry, and materials work: force, energy and power, pressure and flow, density, thermal expansion, Ohmic and mechanical relationships, and unit-aware conversions between them. They are built to respect dimensional analysis — every quantity carries its units, so the result is meaningful and mistakes like adding metres to seconds are impossible.
The foundation is the SI system: seven base units from which every other unit is derived. A newton is just kg·m/s²; a pascal is a newton per square metre. Tools that understand those relationships can convert and combine quantities reliably instead of relying on a lookup table of magic numbers. Whether you are sizing a beam, balancing an equation, or converting between energy units, the computation runs in your browser with full precision and shows the method.
SI base units
The seven base units that every derived unit is built from.
| Quantity | Unit | Symbol |
|---|---|---|
| Length | metre | m |
| Mass | kilogram | kg |
| Time | second | s |
| Electric current | ampere | A |
| Temperature | kelvin | K |
| Amount of substance | mole | mol |
| Luminous intensity | candela | cd |
Derived units are combinations of these — e.g. force (newton) = kg·m·s−².