King Calculator is a free, powerful calculator designed to make calculations easy.

Its flexible expression editor lets you enter, edit, and solve calculations naturally. Move the cursor anywhere in an expression to make changes without starting over, whether you're working with basic arithmetic, fractions, percentages, or more advanced formulas. Color highlighting keeps expressions easy to read, even as they become more complex.

Switch between the simple and scientific calculator views by rotating your device. You can also enlarge the display with a single tap for easier viewing.

King Calculator works on phones and tablets of all screen sizes. Your calculation history is always available, so you can review previous results, reuse expressions, or save values to memory. Choose between two memory modes: classic Save/Clear memory, or business-calculator memory with M+, M-, and MRC buttons — the familiar style of a cash register.

The calculator also supports graphing, very large numbers, and a wide range of mathematical functions. It's completely free, with no paid features to unlock and no unnecessary permissions.

Whether you're a student, engineer, teacher, or simply need a reliable calculator every day, King Calculator has the tools you need.

Features

★ Flexible expression editor with full cursor editing.

★ Fraction support: enter, edit, convert, and calculate.

★ Basic and advanced arithmetic.

★ Correct order of operations.

★ Percentage calculations.

★ Large number support.

★ ANS button to reuse your last result.

★ Calculation history.

★ Two memory modes: Save/Clear memory or M+, M-, MRC.

★ Trigonometric functions (sin, cos, tan, asin, acos, atan, sinh, cosh, tanh).

★ Powers and exponents.

★ Square root and cube root.

★ Factorial and modulo.

★ Logarithmic functions.

★ Absolute value, ceil, and floor.

★ Simple calculator mode.

★ Scientific calculator mode.

★ Graphing for single-variable functions.

★ Free forever.