Categoría

Matemáticas Herramientas

Geometry, percentages, fractions, statistics — math utilities with formulas shown.

Overview

Math tools that hide their math aren't tools, they're cheating. Every calculator here shows the formula being applied — useful for students learning, professionals double-checking, and anyone who wants to understand (not just trust) the result. Coverage includes geometry, arithmetic, percentages, and combinatorics.

Common Use Cases

→Calculate circle and triangle areas with formula explanations.
→Convert fractions to decimals (and back) precisely.
→Compute percentage change, markup, and margin.
→Pick random numbers for statistical sampling.

Featured Tools

Frequently Asked Questions

How precise are decimal-to-fraction conversions?

We find the simplest fraction within a tolerance you can configure (default 1e-6). 0.333333 → 1/3, 0.142857 → 1/7, etc. For repeating decimals, the tool detects the pattern when possible.

Are random numbers truly uniform?

Yes — we use crypto.getRandomValues, the same source used for cryptographic keys. Each value in your range is equally likely.

Can I solve equations?

Most math tools here are calculators, not symbolic solvers. For x² + 3x − 4 = 0 style equations, look for the quadratic equation solver specifically.

Calculadora de Porcentajes

Calcula porcentajes, incrementos y diferencias fácilmente.

Calculadora de Edad

Calcula tu edad exacta en años, meses y días.

Calculadora de Cambio Porcentual

Calcula el porcentaje de cambio entre dos valores.

Convertidor de Fracción a Decimal

Convierte fracciones a decimales al instante.

Convertidor de Decimal a Fracción

Convierte decimales a fracciones al instante.

Generador de Números Aleatorios

Genera números aleatorios dentro de un rango personalizado al instante.

Calculadora de Área del Círculo

Calcula el área, la circunferencia y el diámetro de un círculo.

Calculadora de Área de Triángulo

Calcula el área de un triángulo.