How do you convert a fraction to a percent?

Divide the numerator by the denominator, then multiply the result by 100 and add the percent sign.

Can I convert a percent back to a fraction?

Yes. Enter the percentage and the calculator writes it over 100, then simplifies it.

Can I choose decimal precision?

Yes. Select the number of decimal places for rounded percentage results while the exact fraction remains visible.

How do I convert a percent to a fraction?

Write the percent over 100 and simplify. For 25%, use 25/100, then divide by 25 to get 1/4.

Can a percentage be greater than 100?

Yes. A percentage above 100% means the measured amount is larger than the reference whole. Interpret it against the correct original quantity before drawing a conclusion.

How do I convert a decimal to percent?

Multiply the decimal by 100 and add the percent sign. For 0.375, 0.375 × 100 = 37.5%.

Can I share a calculation?

Yes. Use Share to copy a URL containing the current calculator values, then open that link on another device or send it to someone else.

Fraction to Percent Calculator – Percent, Decimal & Fraction

A clear answer before the details

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100. To convert a percent to a fraction, write it over 100 and simplify.

Convert a fraction to a percentage

A fraction to percent calculator divides the numerator by the denominator and multiplies by 100. For 1/4, 1 ÷ 4 = 0.25 and 0.25 × 100 = 25%, so the fraction, decimal, and percentage all describe the same quantity. The result is useful for grades, discounts, survey results, probabilities, and progress measurements. Choose precision when the percentage does not terminate neatly.

Move between fractions, decimals, and percentages

Use the percent to fraction calculator mode when a percentage needs an exact rational form: write p% as p/100 and simplify. For decimal to percent, multiply by 100; for percent to decimal, divide by 100. A percentage greater than 100% is valid when a quantity exceeds its reference amount, while negative percentages can describe a decrease. Check the reference whole before interpreting any percentage in a real problem.

Formula guide

The key equations are separated below. Start with the calculator mode, then choose the shape or model that matches your problem.

Fraction to percent

percent = fraction × 100

Multiply the decimal value by 100 and add %.

Percent to fraction

p% = p/100

Write the percent over 100, then simplify.

Percent to decimal

decimal = percent ÷ 100

Move the decimal point two places left.

Decimal to percent

percent = decimal × 100

Multiply a decimal by 100 to express it per hundred.

Worked example

For 1/2, 1 ÷ 2 = 0.5 and 0.5 × 100 = 50%. The exact fraction remains 1/2.

Formulas for common use cases

Use the matching equation for the problem you are solving, then enter its variables in the calculator above.

Grades and proportions

1/2 = 0.5 = 50%

Three notations describe the same quantity.

Discounts

sale price = original × (1 − discount rate)

Convert the percentage to a decimal before multiplying.

Percentage change

change % = (new − old) ÷ old × 100

The original value is the reference denominator.

How to use this calculator

Select the direction of conversion.
Enter the value in the matching fields.
Choose decimal precision for rounded output.
Copy the exact and rounded forms together.

Where it helps

This converter is useful for discounts, test scores, proportions, probability, data summaries, and checking homework. Showing all three representations helps learners understand that 50%, 0.5, and 1/2 describe the same quantity while using different notation.

Common mistakes

Percent means “per hundred,” so do not multiply by 100 twice. Check whether your input is already a decimal or a percentage before choosing a mode. Rounded percentages are convenient for presentation, but keep the fraction for exact work.