Rechnerpilot tool
A modern calculator app for basic arithmetic, parentheses, percentages, memory, history and keyboard control.
Explanation
The calculator processes a whole calculation instead of just two values. This lets you set parentheses, copy intermediate results and reopen calculations from the history.
Memory functions help with longer tasks: M+ adds the current result, M− subtracts it, MR retrieves the stored value and MC clears the memory.
In scientific mode, trigonometric functions, logarithms, powers and constants are available. With DEG/RAD you choose between degrees and radians.
Practice
With (120 + 80) × 0.19 you calculate a tax or a surcharge on a subtotal.
Compute a partial amount, store it with M+ in memory and reuse it later with MR.
Numbers, operators, parentheses, Enter, Backspace and Escape work directly via the keyboard.
FAQ
The percent key turns a number into its hundredth value. So 15 % is used as 0.15. For 200 − 15 % this gives 170.
In scientific mode you have sine, cosine, tangent, arc functions, logarithms, powers, factorial and constants such as π and e.
Yes. You can enter a comma or a point. The display uses German notation (comma as the decimal separator).
DEG computes angles in degrees (360° in a circle), RAD in radians (2π in a circle). The default is DEG.
Yes. All digits, operators (+, -, *, /), Enter to calculate and Escape to clear work via the keyboard. In scientific mode also ^ for powers and ! for factorial.
Yes. Every completed calculation is stored in the history and can be loaded back into the input with a click. The history remains until the page is closed.
In scientific mode: square root via the √ key, arbitrary roots as a power (e.g. 8^(1/3) for the cube root). Powers directly with the x^y key or the ^ symbol.
No. All calculations take place locally in the browser. No data is transmitted or stored.
Tips
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