BeanNest tools
Calculators
Solve common date, percentage, unit, ratio, size, and duration calculations in the browser.
Basic Calculator
Run everyday arithmetic with keyboard or touch input, percentages, sign changes, square roots, and one-click result copy.
Open tool →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 →Geometry Calculator
Calculate area and perimeter or circumference for rectangles, circles, and valid triangles with formulas shown.
Open tool →What to expect
Useful browser results, with the browser limits explained.
BeanNest keeps the main task compact and puts deeper guidance below the work surface. A tool reports what it can actually observe or produce in your browser; it does not claim to certify hardware, formats, or system behavior that the web platform cannot verify.
Private by design
The tools in this category are designed to keep working input in the browser. Each tool page states its exact privacy behavior and any browser or device limitations that matter for the result.