Scientific Notation Converter
Convert decimal numbers to normalized scientific notation and back using digit-based arithmetic.
Open toolFraction Simplifier
Simplify signed integer fractions exactly and see the greatest common divisor and mixed-number form.
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Enter the inputs, then select Calculate.
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How Fraction Simplifier works
The simplifier divides the numerator and denominator by their greatest common divisor and moves any denominator sign into the numerator.
The result includes the reduced fraction, common divisor, and mixed-number representation. A zero numerator becomes 0/1, while a zero denominator is rejected.
Both fields accept integers of up to 100 digits.
How to use Fraction Simplifier
Enter the numerator and denominator as signed whole numbers, with no decimal point or unit.
Enter the two integer parts
Put the signed whole-number numerator and denominator into their separate fields. Do not paste the slash, decimals, units, or grouping commas. The denominator must be nonzero.
Numerator
Simplify a fraction to lowest terms
Run the simplifier and read the lowest-terms fraction. Exact integer arithmetic divides both original parts by their common divisor and normalizes the denominator to a positive value.
-7/3
Compare the supporting forms
Read the greatest common divisor and mixed-number result alongside the fraction. Record the representation your next calculation needs. A result that stays unchanged may already be in lowest terms.
Greatest common divisor
When to use Fraction Simplifier
Simplification is useful when equivalent fractions need a consistent form for reading or comparison.
Clean up a worked example
Simplify a fraction produced during a classroom exercise so the final line is easier to read. Keep the earlier calculation steps visible; reducing the last fraction does not establish that the arithmetic used to obtain it was correct.
Compare equivalent ratios
Reduce two fractions separately and compare their normalized results. Matching reduced fractions represent the same ratio. This method helps distinguish a different presentation of a ratio from a change in the quantities being compared in the source problem.
Express a whole and remainder
Use the mixed number display for a quantity larger than one when that format suits an explanation. Retain the improper fraction if another calculation expects it, because this tool does not add, subtract, multiply, or divide separate fractions.
Read signs and zero correctly
Read the reduced fraction alongside its original integers and the greatest common divisor.
The fraction is reduced using exact integer arithmetic. A result with a positive denominator gives the sign one consistent location, making fractions entered with different sign positions easier to compare.
A zero numerator reduces to zero over one. A zero denominator is rejected because it does not define a fraction. The greatest common divisor describes the reduction, not an additional result to add.
Check a fraction that will not simplify
Whole-number inputs and a nonzero denominator are required before a fraction can be reduced.
Both fields accept integers of up to 100 digits. Remove commas, decimal points, slash characters, and surrounding explanatory text. Enter the two parts separately instead of pasting the entire fraction into one field.
If the result is unchanged, the original fraction may already be in lowest terms. Check the common divisor and the input digits before expecting every submitted fraction to produce smaller numbers.
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Enter the numerator and denominator as signed whole numbers, with no decimal point or unit.
Fraction Simplifier: common questions
Answers about using Fraction Simplifier and understanding its results.
Can the numerator be negative?
Yes. A negative sign is normalized to the numerator.
How is zero simplified?
Zero over any nonzero denominator simplifies to 0/1.
Can I simplify decimal inputs?
The fields accept signed integers. Express the decimal as an integer fraction first, then enter the numerator and denominator separately.
Why did my fraction remain unchanged?
Its numerator and denominator may already have a greatest common divisor of one. Check that divisor and the entered digits.