Engineering Calculations, Simplified

Unit conversions, SI notation like `10k` and `2.5M`, named variables, and multi-line calculations — all in a clean notepad interface.

Built for engineers

Type `10k` for 10,000, `2.5M` for 2,500,000, or `500m` for 0.5. Natural shorthand for engineering values.

Convert between any units: length, mass, volume, temperature. Type `100 psi to bar` or `500 mm to inches`.

Define constants and reference them: `pi = 3.14159`, `radius = 50mm`, `area = pi * radius * radius`.

See answers update in real time as you type. No "equals" button, no waiting. Change a variable and all dependent values update.

load = 50k
area = 200
stress = load / area

100 psi to bar
500 mm to inches
25 celsius to fahrenheit

voltage = 240
resistance = 1.2k
current = voltage / resistance
power = voltage * current

Free to use. Available on every platform.