Scientific Calculator
Perform advanced mathematical calculations including trigonometry, logarithms, exponents, roots, and more with our free online scientific calculator.
How to Use This Calculator
- Type numbers using the on-screen keypad or your keyboard.
- Press a function button (sin, cos, log, etc.) to apply that operation to the current expression.
- Use parentheses ( and ) to group expressions and control the order of operations.
- Press = to evaluate and see the final result.
- Press C to clear the display or ⌫ to delete the last entry.
Key Formulas
log10(x), ln(x), log2(x) — Logarithms base 10, e, and 2
√x = x1/2, ∛x = x1/3
n! = n × (n−1) × ... × 1 — Factorial
This calculator supports trigonometric functions in degrees, common and natural logarithms, powers, roots, factorials, absolute value, and random number generation.
Examples
Trigonometry
To find sin(30): press 3, 0, then sin → result is 0.5.
Logarithms
To calculate log(100): press 1, 0, 0, then log → result is 2, since 10² = 100.
Powers and Roots
To compute √(49): press 4, 9, then √ → result is 7. For 210: enter 2, press xʸʹ, enter 10, press = → 1024.
Frequently Asked Questions
Is this scientific calculator in degrees or radians?
This calculator works in degrees. Trigonometric functions like sin, cos, and tan accept degree values directly.
What does n! (factorial) mean?
The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120.
Can I use my keyboard to type expressions?
Yes. You can type numbers and operators (+, −, ×, ÷) directly from your keyboard. Press Enter to calculate.
What is the difference between log and ln?
log is the base-10 logarithm (common log), while ln is the natural logarithm (base e ≈ 2.71828).