How do I use the memory functions?

MC clears memory, MR recalls the stored value into the display, M+ adds the current displayed value to memory, and M− subtracts it. A small indicator shows the stored value whenever memory is non-zero.

Is my calculation history stored or sent anywhere?

No. All calculations happen entirely in your browser using JavaScript. Nothing you enter is ever sent to or stored on any server. Your history is held only in browser memory and disappears when you close or refresh the tab.

How do I raise a number to a power?

Use the xʸ button to insert the exponentiation operator (^), then type the exponent and press =. For example: 2 xʸ 8 = gives 256. Shortcuts x² and x³ square or cube the current value directly.

100% browser-based · nothing stored

Scientific Calculator

A free scientific calculator online for trigonometry, logarithms, powers, roots, and mathematical constants — no sign-up required and nothing ever leaves your device. Switch between degrees and radians, store values in memory, and review your last 20 calculations in the built-in history panel.

How It Works

Set your angle mode

Pick DEG or RAD before using trig functions. DEG mode works with degrees (0–360), RAD mode works with radians (0–2π). The mode is shown at the top of the calculator.

Build your expression

Tap function buttons (sin, log, √x…) and numbers to compose your calculation. The expression bar shows the full formula so you can review it before evaluating.

Press = for the result

Hit = and the answer appears instantly. All arithmetic runs in your browser — no network round-trip, no waiting. The result is saved to your history automatically.

Use memory for multi-step work

Store intermediate results with M+, bring them back with MR, and clear with MC. Chain complex calculations across multiple steps without retyping.

Why users love this tool

Your calculations never leave your device — everything runs in JavaScript in your browser, not on our servers.
Instant results — there's no upload or round-trip to a server, so answers appear the moment you press =.
No account needed — just open the page and start calculating straight away.
Works on any device — optimised for both desktop and mobile browsers.

Function Reference

Button	What it does	Example
sin / cos / tan	Trigonometric functions (DEG or RAD)	sin(30) = 0.5 in DEG mode
sinh / cosh / tanh	Hyperbolic functions (always radians)	sinh(1) ≈ 1.1752
log	Base-10 logarithm (common log)	log(1000) = 3
ln	Natural logarithm (base-e)	ln(e) = 1
√x / ∛x	Square root / cube root	√144 = 12, ∛27 = 3
x² / x³ / xʸ	Square, cube, or arbitrary power	2 xʸ 10 = 1024
\|x\|	Absolute value	\|−42\| = 42
mod	Modulo (remainder after division)	17 mod 5 = 2
π	Pi constant ≈ 3.14159265…	2 × π ≈ 6.28318
e	Euler's number ≈ 2.71828…	e² ≈ 7.389

Features

Full trig suite: sin, cos, tan plus hyperbolic counterparts sinh, cosh, tanh.
DEG / RAD toggle: switch angle modes without leaving the page.
Logarithms: base-10 log and natural log (ln) in one click.
Powers and roots: x², x³, xʸ, square root, and cube root.
Mathematical constants: π and Euler's number e built in.
Memory functions: MC, MR, M+, M− for multi-step calculations.
Calculation history: your last 20 results shown in a collapsible panel.
Your data stays private: all arithmetic runs in your browser — nothing is uploaded or stored.
No account required: open the page and start calculating straight away.
Works on any device: responsive layout optimised for desktop and mobile.

Frequently Asked Questions

How do I calculate sin, cos, or tan?

Press the sin, cos, or tan button, type your angle value, close the parenthesis with ), then press =. Make sure you have selected the correct angle mode (DEG or RAD) beforehand.

What is the difference between DEG and RAD mode?

DEG mode treats angles as degrees — for example, sin(90) = 1. RAD mode treats angles as radians — for example, sin(π/2) = 1. For most everyday science and engineering problems, check which unit your question uses and set the mode to match.

What is the difference between log and ln?

log computes the base-10 (common) logarithm, used in chemistry (pH), decibels, and Richter scale calculations. ln computes the natural logarithm (base-e), used in calculus, growth modelling, and physics.

How do I raise a number to a custom power?

Press xʸ after entering the base, then type the exponent and press =. For example: enter 2, press xʸ, enter 10, press = → result is 1024. Use x² or x³ as shortcuts for squaring or cubing.

Is my data stored or sent to a server?

No. Every calculation happens entirely in your browser using JavaScript. Nothing you type is sent to or stored on any server. Your history exists only in browser memory and is cleared when you refresh or close the tab.

How do the memory functions work?

MC clears the stored value to zero. MR recalls it into the current expression. M+ adds the displayed number to memory; M− subtracts it. When memory holds a non-zero value, it is displayed above the calculator screen as a reminder.