How do I simplify a ratio using this calculator?

Enter the two numbers of the ratio (e.g., 12 and 18). The calculator will find the greatest common divisor (GCD) and divide both numbers by it, giving you the simplified ratio in its lowest terms, such as 2:3.

Can this calculator scale a ratio to a target value?

Yes. If you have a ratio like 2:5 and need to find the equivalent ratio when one part becomes a specific number (e.g., 10), the calculator will compute the missing value to maintain the proportion, giving you 10:25.

How do I convert a ratio to a percentage or fraction?

Enter the ratio (e.g., 3:4). The calculator will show the fraction (3/4) and the percentage (75%). It also provides the decimal equivalent (0.75) for quick reference.

Matematicas

Instantáneo, privado y gratis

Calculadora de Proporciones.

4 ago 2026

Simplifica proporciones, encuentra equivalentes y resuelve proporciones

Cálculo en el dispositivoSin registro

Introduce tus valores

Los resultados se actualizan al escribir.

02 / RESPUESTA

Modo de calculo

Introduce la proporcionUsa el formato: 4:8 o "4 a 8" o 4,8 o 4 8

Usa el formato: 4:8 o "4 a 8" o 4,8 o 4 8

Proporcion Simplificada

1 : 2

Dividido por 4

Como porcentajes

33.3% : 66.7%

Como fracciones

4/12 : 8/12

Como decimales

0.33 : 0.67

Proporciones Equivalentes

1:2

×2

2:4

×3

3:6

×4

4:8

×5

5:10

×6

Como usar

Proporcion: Una comparacion de dos o mas numeros que muestra cuantas veces un valor contiene a otro.

Simplificacion: Simplificar: Reduce una proporcion a sus numeros enteros mas pequenos dividiendo por el MCD.

Ejemplo: 4:8 se simplifica a 1:2 (ambos divididos por 4)

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Cite this calculator

Canonical URL: https://mathify.one/es/math/ratio

Updated 4 ago 2026

Cite as: Mathify. (2026). Calculadora de Proporciones. https://mathify.one/es/math/ratio

Use Cases

Simplify ratios for recipes or mixtures

When a recipe calls for a ratio of ingredients, use the calculator to reduce it to simplest form for easier scaling or to adjust quantities.

Example: Simplify 8:12 to 2:3 for a paint mix.

Scale ratios for resizing or budgeting

If you need to scale a ratio to a new total or a specific component value, the calculator helps find the missing number to keep proportions accurate.

Example: If a model car is 1:24 scale and the real car is 4.8 m, find the model length.

Frequently Asked Questions

How do I simplify a ratio using this calculator?: Enter the two numbers of the ratio (e.g., 12 and 18). The calculator will find the greatest common divisor (GCD) and divide both numbers by it, giving you the simplified ratio in its lowest terms, such as 2:3.
Can this calculator scale a ratio to a target value?: Yes. If you have a ratio like 2:5 and need to find the equivalent ratio when one part becomes a specific number (e.g., 10), the calculator will compute the missing value to maintain the proportion, giving you 10:25.
How do I convert a ratio to a percentage or fraction?: Enter the ratio (e.g., 3:4). The calculator will show the fraction (3/4) and the percentage (75%). It also provides the decimal equivalent (0.75) for quick reference.

Tips & Common Mistakes

Tips

Always enter the ratio numbers in the order they appear (e.g., first number:second number) to get the correct simplified form.
Use the scaling feature when you need to find an equivalent ratio with a known part, such as adjusting a recipe for more servings.
Check the percentage and decimal outputs to understand the ratio's value in different formats, useful for comparisons.
For ratios with more than two numbers, simplify each pair separately or use the calculator for each pair to ensure accuracy.

Common Mistakes to Avoid

Entering the numbers in the wrong order, which can lead to an incorrect simplified ratio or scaled value.
Forgetting to simplify the ratio fully, but the calculator does it automatically, so ensure you use the simplified result for further calculations.
Assuming the percentage is the first number divided by the second, but it's actually the first number divided by the sum of both numbers (e.g., 2:3 gives 40%, not 66.7%).

Last updated: August 13, 2026