# Ratio Calculator Simplify ratios, calculate ratio shares, and convert between ratio, fraction, and decimal forms > Canonical page: https://elysiatools.com/en/tools/ratio-calculator - **Category:** Math & Numbers - **Keywords:** ratio, calculator, fraction, share, simplify ratio ## Overview The Ratio Calculator is a straightforward utility designed to simplify ratios, calculate proportional shares, and convert values into decimal formats. Whether you are scaling a recipe, analyzing financial metrics, or solving math problems, this tool instantly reduces your inputs to their simplest terms and provides the exact percentage share for each side. ## Inputs - **Value A** (text): e.g. 12 - **Value B** (text): e.g. 18 - **Simplify Ratio** (checkbox) - **Decimal Places** (number) ## When to use - When you need to reduce a complex ratio to its simplest terms for math assignments or academic research. - When calculating proportional shares to distribute funds, allocate budgets, or split expenses. - When scaling recipes, mixing chemicals, or adjusting formulas that require precise part-to-part ratios. ## How it works - Enter the first number in the Value A field and the second number in the Value B field. - Check the Simplify Ratio box to automatically reduce the ratio to its lowest common terms. - Adjust the Decimal Places setting (between 0 and 12) to control the precision of the decimal output. - View the results instantly, including the simplified ratio, decimal equivalent, and percentage share for both values. ## Use cases - Teachers and students verifying math homework involving fractions, proportions, and ratio simplification. - Business partners calculating equity splits or profit-sharing percentages based on initial capital investments. - Bakers and chefs scaling ingredient quantities while maintaining the exact flavor profile of a recipe. ## Frequently asked questions ### What does simplifying a ratio mean? Simplifying a ratio means dividing both sides by their greatest common divisor (GCD) so the relationship is expressed in the smallest possible whole numbers. ### Can I use decimals as inputs for Value A and Value B? Yes, you can input decimal values. The calculator will process them and determine the proportional shares and decimal equivalents. ### What is the maximum number of decimal places I can set? You can configure the tool to output up to 12 decimal places for high-precision calculations. ### How are the percentage shares calculated? The tool adds Value A and Value B to find the total, then divides each individual value by the total and multiplies by 100 to find their respective percentage shares. ### Does this tool convert ratios to fractions? 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