King Calculator

Calculator Inc

In-app purchases

About this app

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.

Ratings and reviews

Version 3.0 is still very easy to use, and it includes many functions. Some text can't be read easily in dark mode. I am also an iPad user and I will soon be transitioning from an Android phone to an iPhone, so I wish you had a King Calculator app for iOS, too.

I have a new phone and don't like the calculator that came with it. So far I have been happy with this app. There was something I didn't like real well but can't remember what it is so was definitely not a deal breaker. I HATE the changes you have made to your calculator. I've been using it for years and you just up and change it. How do I change it back to what I had before. If I can't, I will find a different app.

aw man why you gotta change it??? I've been using this app for years and now they're all in weird places and circles