MATH CALCULATOR
Ratio Calculator
Solve ratios, scale ratios to a specific total, and simplify ratios to their lowest terms.
How to Use the Ratio Calculator
Use the Ratio Calculator to solve proportions, scale a ratio to a specific total, or simplify a ratio to its lowest terms.
Choose the calculation you need, enter the values, and the calculator will automatically show the result.
How to Solve a Ratio
To solve a ratio, enter the two values that make up the known ratio and the known value from the second ratio.
For example, if the ratio is 2 : 3 and 2 corresponds to 8, the calculator can determine the value corresponding to 3. The result is 12.
How to Scale a Ratio
Scaling a ratio means finding values that maintain the same proportion while matching a specific total.
For example, a ratio of 2 : 3 has 5 total parts. If the target total is 25, the scaled values are 10 : 15.
How to Simplify a Ratio
Simplifying a ratio means reducing both numbers by their greatest common divisor until no further reduction is possible.
For example, 12 : 18 can be divided by 6, giving the simplified ratio 2 : 3.
Ratio Calculator Example
Suppose a recipe uses 2 cups of flour for every 3 cups of another ingredient. If you need 8 cups of flour, the equivalent amount of the second ingredient is 12 cups.
Enter 2 as the first ratio value,3 as the second ratio value, and8 as the known value to calculate the missing value.
Frequently Asked Questions
How do I calculate a ratio?
Enter the known values into the Solve a Ratio option. The calculator uses the proportion between the values to determine the missing number.
How do I find an equivalent ratio?
Use the Scale a Ratio option and enter the original ratio along with your desired total. The calculator will calculate equivalent values that preserve the same proportion.
How do I simplify a ratio?
Enter both numbers into the Simplify a Ratio option. The calculator divides both values by their greatest common divisor to produce the simplest ratio.
What is an example of a simplified ratio?
A ratio of 12 : 18 simplifies to 2 : 3 because both numbers can be divided by their greatest common divisor, 6.