百分比转换器

Convert between fractions, decimals, and percentages—three ways of expressing the same value. Understanding these conversions is essential for math, science, finance, and everyday calculations. To convert a decimal to a percentage, multiply by 100. To convert a percentage to a decimal, divide by 100. To convert a fraction to a decimal, divide the numerator by the denominator. Common equivalents to memorize: 1/2 = 0.5 = 50%, 1/4 = 0.25 = 25%, 1/3 ≈ 0.333 = 33.3%, 1/5 = 0.2 = 20%, 3/4 = 0.75 = 75%. These conversions appear constantly in everyday life—from sales discounts to cooking measurements to test scores.