Math Calculators: free online tools for the math you use every day. Calculate percentages, convert fractions to decimals, and solve the arithmetic problems that come up at school, at work, and at home. Each calculator shows its work step by step, so you do not just get an answer, you understand it. Our popular Fraction to Decimal Calculator, for example, converts any fraction or mixed number and explains terminating versus repeating decimals along the way. Every math tool is paired with plain-English guides that break down the formulas, work through real examples, and answer common questions. Whether you are a student, a teacher, or just someone who wants to double-check the numbers, you will find the tool and the explanation together. All of our math calculators are free, require no sign-up, and work on any device. New math tools are added regularly, so check back often.
