Calculator
Switch between a normal calculator and a full scientific one.
A calculator for everyday arithmetic, with a Scientific mode you can switch to for trigonometry (sin, cos, tan in degrees or radians), logarithms, powers, roots, factorials, and the constants π and e — works with your keyboard or on-screen buttons, on any device.
Frequently asked questions
Can I use my keyboard instead of clicking?
Yes — number keys, +, -, *, /, Enter (or =) for equals, Backspace to delete the last digit, and Escape to clear all work.
Does it follow order of operations (PEMDAS)?
No — like a physical handheld calculator, it computes left to right as you enter each operation, rather than applying multiplication/division before addition/subtraction. For example, 2 + 3 × 4 gives 20, not 14.
What's the difference between DEG and RAD?
They control how sin, cos, and tan interpret the number you enter — DEG treats it as degrees (0-360), RAD treats it as radians (0-2π). Switch to whichever your work uses; most everyday and school use is DEG.