Scientific Calculator

An expression calculator you can type into. The same calculator opens on every page from the button in the bottom-right corner.

CalculatorTrigonometryKeyboard

METHOD

How it is calculated

Functions: sin cos tan asin acos atan sinh cosh tanh sqrt cbrt ln log log2 exp abs round floor ceil
Constants: pi (π), e, g = 9.80665, ans (last result)
Operators: + − × ÷ ^ ! %   ·   example: 2pi·sqrt(0.5/g)

ASSUMPTIONS & NOTES

Use a dot or a comma as the decimal separator.
Switch between degrees and radians with the DEG/RAD button.

Results are for preliminary design and checking; base the final design on the governing standard and safety factors.

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Minimum solid shaft diameter under combined bending and torsion (ASME shaft code), with a standard size.

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DIN 6885 key size, hub bearing-pressure and key shear checks, and the minimum key length.

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