Scientific & Regular Calculator
Free online standard and scientific calculator. Supports trigonometry, logarithms, exponential powers, factorials, memory, and calculation history.
📖 How to Use Scientific & Regular Calculator
Follow these simple steps to achieve fast and accurate results.
Choose Calculator Mode
Toggle between Standard Mode for quick everyday calculations and Scientific Mode for advanced math.
Input Numbers & Operations
Click the on-screen buttons or type directly on your physical keyboard (0-9, +, -, *, /, Enter, Backspace).
Apply Advanced Functions
In Scientific mode, toggle DEG/RAD, compute trigonometry (sin, cos, tan), natural logs (ln), square roots, and powers.
Use Memory & History Tape
Store values with M+/M- and click any previous calculation in the history tape to restore it instantly.
💬 Frequently Asked Questions
Got questions about Scientific & Regular Calculator? Here are the most common answers.
Does this calculator support keyboard typing?▼
Yes! You can type numbers and operators directly on your keyboard: numbers 0-9, +, -, *, /, Enter or = for equals, Backspace to delete, and Escape to clear.
What is the difference between DEG and RAD mode?▼
DEG (Degrees) treats angles in 360-degree notation (e.g. sin(30) = 0.5), while RAD (Radians) evaluates angles in radian units based on π (e.g. sin(π/6) = 0.5).
How do memory functions (MC, MR, M+, M-) work?▼
M+ adds the current displayed value to the memory register, M- subtracts it, MR recalls the stored memory value to the screen, and MC clears the memory register to zero.
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