Online Calculator

A beautiful calculator with basic and scientific modes. Supports keyboard input.

How It Works

This calculator supports two modes: Basic and Scientific. In Basic mode, you can perform standard arithmetic operations including addition, subtraction, multiplication, and division. The interface is designed to feel like a native iPhone calculator with smooth button interactions and keyboard support.

In Scientific mode, you get access to advanced mathematical functions including trigonometric functions (sin, cos, tan), logarithms (log, ln), powers and roots, constants (pi and e), and memory operations. Toggle between radians and degrees for trigonometric calculations. From your keyboard you can type numbers and use + - * /, = or Enter, %, Backspace, and Esc; scientific functions, memory keys, ± and constants such as π are used by clicking the buttons. For more specialized math tasks, check out our Percentage Calculator, Fraction Calculator, and Discount Calculator.

Frequently Asked Questions

Does this calculator support keyboard input?

Yes! You can use number keys (0-9), operators (+, -, *, /), = or Enter for equals, % for percent, Escape to clear, Backspace to delete the last digit, and the period key for decimals. Scientific functions, memory keys, ± and constants (π, e) are used by clicking the buttons.

What is the difference between Basic and Scientific mode?

Basic mode provides standard arithmetic operations (add, subtract, multiply, divide). Scientific mode adds trigonometric functions, logarithms, powers, roots, constants, and memory functions.

How do I switch between radians and degrees?

In Scientific mode, click the Rad/Deg button in the top row of the scientific keypad, right next to 2nd. The label shows the current angle unit being used for trigonometric calculations.

What are the memory functions (MC, M+, M-, MR)?

MC clears the memory, M+ adds the current display value to memory, M- subtracts the current display value from memory, and MR recalls the stored memory value to the display.

Learn how to add fractions with different denominators, multiply and divide fractions, simplify results, and convert between fractions, decimals, and percentages.