Full-featured scientific calculator with trig, log, power functions, history, and DEG/RAD mode.
Need a scientific calculator online that handles everything from basic arithmetic to advanced trigonometry? This full-featured tool includes sin, cos, tan, inverse trig functions, logarithms, natural logs, square root, power functions (xʸ), factorial, percentage, and absolute value. Everything is contained within a clean, standalone interface that won’t disrupt your page, allowing you to toggle between DEG and RAD modes, view your calculation history, and click any prior result to utilize it again.
Trigonometric Functions: sin, cos, tan, sin⁻¹, cos⁻¹, tan⁻¹
Logarithmic Functions: log (base 10) and ln (natural log)
Power & Root: xʸ (power), √ (square root)
Constants: π (pi) and e (Euler’s number)
Advanced Operations: factorial (n!), percentage (%), absolute value (|x|)
Angle Mode Toggle: DEG (degrees) / RAD (radians) buttons
Live Expression Preview: Shows your input as you type
History Panel: Stores last 8 calculations — click to reuse any result
Keyboard Support: Type numbers, operators, Enter for equals, Backspace to delete
Using this scientific calculator online is straightforward. Click any button on the keypad to build your expression — the display shows your current equation above and the live result below. For trig functions, first choose DEG or RAD mode depending on your angle unit. Press “AC” to clear everything or “⌫” to delete the last character. When your expression is ready, hit “=” to compute the final result. The answer automatically saves to the history panel on the left; click any history item to reload that value instantly.
Use the history wrap to quickly recall previous answers without retyping
Switch between DEG and RAD before entering trig values — changing mode mid-calculation won’t convert existing numbers
The factorial function works only on non-negative integers; invalid inputs return an error
Press “()” button: the tool automatically adds ‘(‘ or ‘)’ based on open/close count
Unlike basic calculators, this scientific calculator online gives you a dual-display system. The top line (expr) shows your raw input — for example, “sin(30)+log(100)”. The bottom line (result) shows the live evaluated number as you type. Once you press “=”, the full equation moves to the history panel. After that, you may select any previous entry (such as 25 = 25), and that amount immediately turns into your working value. As a result, iterative computations can be carried out in a continuous manner.
The calculator uses scoped CSS — it won't affect or inherit styles from your website
Click any past calculation from the history bar to reuse the answer
On smaller screens, function buttons adapt to keep the core keys usable
See the result update as you type, no need to press equals for every check
: Use your physical keyboard for numbers, operators, Enter, Backspace, and Escape
Yes. It includes sin, cos, tan, and their inverses with DEG/RAD mode support.
Press “log” for base-10 logarithm and “ln” for natural log (base e).
No. History resets when you reload the page, but it stores up to 8 entries during your session.
Yes. Use “√” for square root and “xʸ” for raising any number to any power.
Yes. Press number keys, operators (+, -, *, /), Enter for equals, Backspace to delete, and Escape to clear all.
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