Scientific Calculator
Evaluate expressions with trigonometric, logarithmic, and exponential functions
Scientific Calculator
Advanced math functions & expressions
Use your keyboard: numbers, operators, Enter to evaluate, Esc to clear
How to Use
- 1 Type a mathematical expression using the on-screen buttons or your keyboard
- 2 Use scientific function buttons like sin, cos, tan, log, ln, √ for advanced calculations
- 3 Toggle between DEG and RAD mode for trigonometric functions
- 4 Press = or Enter to evaluate — the result is shown instantly
- 5 View your calculation history in the results panel and copy any result
What You Get
A full-featured scientific calculator that runs entirely in your browser. Supports basic arithmetic (+, −, ×, ÷), trigonometric functions (sin, cos, tan and their inverses), logarithms (log, ln), powers (x², xʸ), square root, factorial, constants (π, e), and parentheses for complex expressions. Includes DEG/RAD toggle, ANS recall, and persistent calculation history.
Input: sin(90) in DEG mode
Output: 1
Input: log(1000)
Output: 3
Input: 2^10
Output: 1024
Input: sqrt(144)
Output: 12
Input: (3 + 4) * 5 - 2
Output: 33
How to use a scientific calculator online?
Simply type your mathematical expression using the on-screen buttons or your keyboard. Use function buttons like sin, cos, tan, log, and ln for advanced calculations. Press = or Enter to get the result instantly. You can toggle between DEG and RAD modes for trigonometric functions.
What is the difference between a scientific calculator and a regular calculator?
A scientific calculator includes advanced mathematical functions like trigonometry (sin, cos, tan), logarithms (log, ln), exponents, square roots, factorials, and constants (π, e). A regular calculator only handles basic arithmetic — addition, subtraction, multiplication, and division.
How to calculate sin, cos, and tan on a calculator?
Press the sin, cos, or tan button, then enter the angle value in parentheses. Make sure you are in the correct angle mode — DEG for degrees (e.g., sin(90) = 1) or RAD for radians (e.g., sin(π/2) = 1). You can toggle the mode using the DEG/RAD button.
Can I use a scientific calculator for free?
Yes, this scientific calculator is 100% free to use. It runs entirely in your browser with no downloads, no sign-ups, and no ads. All calculations are processed locally on your device — your data never leaves your browser.
How to calculate logarithms on a scientific calculator?
Use the log button for base-10 logarithms (e.g., log(100) = 2) or the ln button for natural logarithms (e.g., ln(e) = 1). For logarithms with a custom base, use the formula: log_b(x) = log(x) / log(b). For example, log₂(8) = log(8) / log(2) = 3.
Is this calculator safe and private?
Yes, all calculations happen 100% in your browser. No data is sent to any server. Your calculation history is stored locally on your device using localStorage and can be cleared at any time.
100% client-side — all calculations happen in your browser. Your data never leaves your device.