BeanNestTools

Everyday arithmetic

A basic calculator that gets out of your way.

Type numbers directly, use the keypad, or press Enter for the result. Your expression stays in this browser tab.

Keyboard friendlyRuns locallyNo account needed

Basic calculator workspace

Result0

Type a number or use the keypad.

Keyboard: digits, + − * /, Enter or = to calculate, Backspace to edit, Escape to clear.

How it behaves

Normal operator precedence, without dynamic code execution.

Multiplication and division are evaluated before addition and subtraction. Parentheses typed into the expression are supported. BeanNest parses the arithmetic itself rather than handing your text to eval or another dynamic-code API.

Percent, sign, and square root act on the current value.

Percent divides the current value by 100, ± changes its sign, and square root replaces a non-negative current value with its square root. These actions deliberately stay predictable instead of imitating manufacturer-specific percent-key rules.

Your calculation stays in the tab.

Operands and results are computed locally. Analytics receives only coarse tool usage events, not the expression or result.

Can I type without clicking every number?

Yes. Use the expression field directly, or use number/operator keys when focus is not inside another interactive control. Enter calculates and Escape clears.

Why does 0.1 + 0.2 show 0.3?

The calculator formats floating-point results to a practical precision so normal binary floating-point tails are not exposed as distracting digits.

Does Copy after Enter turn on automatically?

No. It is off by default so a calculation never overwrites your clipboard unless you explicitly opt in.

Keep checking

More calculators

Percentage Calculator

Calculate percent-of, percent ratio, and percentage increase or decrease with the working formula shown.

Open tool →

Fraction Calculator

Add, subtract, multiply, and divide exact fractions with automatic reduction and mixed-number output when useful.

Open tool →

Ratio Calculator

Simplify whole-number ratios or solve a missing value in a proportion with the cross-multiplication formula shown.

Open tool →