What Is a Ratio?
A ratio compares two or more quantities, showing how many times one contains the other. It can be written as 3:2, 3 to 2, or 3/2. Ratios are simplified by dividing all terms by their greatest common factor: 12:18 simplifies to 2:3.
Ratios in Finance
Many financial measures are ratios, such as the debt-to-income ratio, loan-to-value ratio, and price-to-earnings ratio.
Ratio vs. Fraction
A fraction compares a part to a whole; a ratio can compare any two quantities, including part to part.
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GCF & LCM Calculator
Greatest common factor and least common multiple, with prime factorizations.
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Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers, with steps.
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Percentage Calculator
Three calculators in one: percentage of a number, percentage of total, and percentage change.
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🔗 Related Terms
More Math & Statistics Terms
- Absolute Value
- Confidence Interval
- Correlation
- Exponent
- Exponential Growth
- Grade Point Average (GPA)
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Last updated: September 27, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.