Калькулятор: проценты, история

Calculate a discount, check an expression, or return to a previous result—a calculator should help you right away. Large keys, calm colors, and an editable line keep the essentials on the screen. The standard and scientific calculators work without mandatory registration or subscription.

EVERYDAY CALCULATIONS

Addition, subtraction, multiplication, and division are available on the main keyboard. Add parentheses, enter decimals, and check your intermediate result as you type. The delete key removes the character next to the cursor, and the AC key clears the current expression. The history is preserved.

PERCENTAGES WITHOUT EXTRA STEPS

The percentage calculator helps with shopping and everyday calculations. Enter 200 + 10% to get 220, or 200 - 10% to get 180. To calculate a fraction, use multiplication: 200 × 10% = 20. Examples are explained in the app settings.

CORRECT YOUR EXPRESSION AT THE RIGHT POINT

Made a mistake in a long calculation? Place the cursor in the expression line and edit the relevant section. No need to start over. The calculator displays the result when the expression can be calculated. If a number or parentheses are missing, finish entering and press the equal sign.

SCIENTIFIC CALCULATOR

Switch to scientific mode for powers, square roots, sine, cosine, tangent, natural and common logarithms. The constants π and e, absolute value, square, and reciprocal are available. The DEG/RAD switch lets you choose between degrees or radians. Additional functions are organized in a compact menu to ensure keyboard accessibility.

The order of operations takes into account parentheses and operator precedence. Decimal arithmetic uses precision to 34 significant digits; trigonometry and logarithm results are rounded. The application reports division by zero and other expressions without a valid result.

EASY-TO-USE HISTORY

Completed calculations are saved in the history along with the result. Select an entry to return the entire expression for editing, insert only the result, or copy the calculation. To quickly copy the current result, hold it on the main screen. The expression draft and the selected mode are saved between launches.

LIGHT AND DARK THEMES

Choose a light theme, a dark theme, or automatic switching based on time. Contrasting digits, uniform rounding, and spacing between keys help you navigate. On smaller screens, scrolling is available for easy access to all actions.

ON-DEVICE CALCULATIONS

Internet access is not required for arithmetic and history viewing. Expressions are processed locally and are not sent to the developer for calculation. History is stored within the app and may be included in the Android system backup, depending on device settings. Backed-up data is shared with other apps only through user actions.

NO MANDATORY SUBSCRIPTION

Basic and scientific functions, history, and both themes are free. The banner is located at the bottom and does not obscure the keys. Ads may appear at launch; they do not delay after you start typing. You can voluntarily watch a promotional video for 24 hours without ads in the settings. Watching is not required for calculations.

This is an expression calculator: it does not recognize tasks from photos or display exchange rates. All of the above functions are available directly in the app.

FOR A VARIETY OF TASKS

Check the total of multiple purchases, calculate the price after a discount, or compare spending options. Use scientific functions for your studies and work: raise a number to a power, find a root, and calculate trigonometric expressions. The calculator with parentheses helps you write your calculations exactly as they appear in your problem.

First, create an expression, then check the numbers and the selected angle mode. If a calculation is already in the history, return it to the screen and replace only the required values. Copying the result is convenient when you need to transfer a number to a note or message. Basic calculations and engineering functions are all in one app.