Math

Scientific Calculator

Keyboard-first scientific calculator with DEG/RAD trig, 2nd functions, memory, history, and display modes.

Digits M

Keyboard: digits and operators type in the expression field · Enter or = evaluate · Backspace delete · Esc/Delete clear · p inserts π

How it works

Type or tap an expression, then press Equals (or Enter). Toggle DEG/RAD for trigonometry, use 2nd for inverse and alternate functions, and choose AUTO/FIX/SCI/ENG display.

Expressions use standard precedence with right-associative powers. Trig and inverse trig respect the DEG/RAD mode; hyperbolic functions are always in radians.

\[ \sin,\ \cos,\ \tan\ \text{respect DEG/RAD};\quad \log=\log_{10} \]
Press 2nd to switch sin/cos/tan and sinh/cosh/tanh to their inverses, and to swap eˣ for 10ˣ. Memory keys MC, MR, MS, M+, and M− store a single value (shown by the M indicator).
Keyboard: type digits and operators in the expression field; Enter or = evaluates; Backspace deletes; Esc or Delete clears; p inserts π. Display modes AUTO, FIX, SCI, and ENG control how results are shown; Digits sets precision. History keeps the last 20 results locally in your browser.
Use Ans to recall the previous result in a new expression.

Reference →

FAQ

Why is sin(90) wrong in RAD mode?

In radians, 90 means 90 rad (≈14.32π), not a right angle. Use DEG mode for degree inputs, or convert first: 90° = π/2 rad ≈ 1.5708.

What does Ans do?

Ans recalls the last successful Equals result so you can chain calculations without retyping (for example Ans×2).

Sources

https://en.wikipedia.org/wiki/Scientific_calculator

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Scientific Calculator

FAQ

Why is sin(90) wrong in RAD mode?

What does Ans do?

Sources

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