Scientific Calculator

How to use the scientific calculator

Tap the buttons or type directly in the input field. Hit = or press Enter to evaluate. Use Deg/Rad to switch angle mode for trig functions. 'Ans' recalls your last result so you can chain calculations. Use AC to reset the input and Clear to wipe the history.

Formula & explanation

Expressions are parsed into a safe whitelist of Math.* operations. Supported: +, −, ×, ÷, ^ (power), % (modulo), n! (factorial), sqrt, cbrt, log (log₁₀), ln (natural log), exp, abs, floor, ceil, round, pow, and trig functions sin/cos/tan/asin/acos/atan. Constants: π and e.

Examples

6×3 = 18 · sin(30) in Deg mode = 0.5 · log(1000) = 3 · 2^10 = 1024 · 5! = 120 · sqrt(2) ≈ 1.41421356237 · Ans+1 adds 1 to the previous result.

Frequently asked questions

What does the Ans button do?

Inserts the result of the last calculation into the input. Useful for chaining — e.g. calculate 5^2, then press Ans+10 to get 35.

What is the difference between Deg and Rad?

Deg mode treats trig inputs as degrees — sin(30) = 0.5. Rad mode treats them as radians — sin(π/6) = 0.5. Switch before entering your expression.

What does AC do vs the ⌫ button?

AC clears the entire input field. ⌫ deletes one character at a time, like a backspace key.

How do I calculate a power like 2 to the power of 8?

Use the xʸ button or type ^ directly — e.g. 2^8 = 256.

How do I calculate a factorial?

Type the number followed by the n! button — e.g. 5! = 120. Factorials are supported up to 170.

What is the difference between log and ln?

log computes the base-10 logarithm (log₁₀). ln computes the natural logarithm (base e). Example: log(1000) = 3, ln(e) = 1.