Math Calculators
Free math calculators for algebra, geometry, statistics, and more. Solve complex mathematical problems with step-by-step solutions.
24 free math calculators available.
Most Popular Math Calculators
- Percentage Calculator — Calculate percentages with five modes: percentage of a number, what percent one number is of another, percentage increase, percentage decrease, and percentage change between two values. Features step-by-step calculation display and visual comparison charts.
Why Math Calculators Matter
Math calculators should do more than spit out an answer — they should show the work, because that's how you actually learn. ConvertMart's math tools walk through every step of the solution, from substituting values into a formula to simplifying radicals, so students and professionals can verify their own work and teachers can use them as teaching aids. All calculators support standard order-of-operations (PEMDAS), handle negative numbers and fractions, and show results in both decimal and exact symbolic form where applicable.
Top Use Cases
- Solve quadratic equations and see the discriminant, both roots, and the graph
- Calculate statistics (mean, median, mode, standard deviation, variance) from a data set with step-by-step workings
- Convert between fractions, decimals, and percentages without rounding errors
- Find the area and perimeter of any triangle given sides (Heronʼs formula) or base + height
- Generate prime factorizations, GCD, and LCM for number theory homework
- Compute combinations, permutations, and probability for statistics and discrete math
How to Use ConvertMart's Math Calculators
Enter your values in the input fields. Every math calculator shows the formula it uses, substitutes your values into the formula, and walks through the simplification steps. Copy any intermediate result for use in another calculation. Results display in both decimal form (for practical use) and exact form where possible (for homework submissions). No calculator requires a login or stores your inputs.
Popular Questions
- What is 15% of 280?
- How do I solve x² + 5x + 6 = 0?
- What is the area of a triangle with sides 5, 7, 9?
- What is the standard deviation of these numbers?
- How do I convert 3/8 to a percentage?
Frequently Asked Questions
- Do the math calculators show work step-by-step?
- Yes, for all equation-based calculators (algebra, statistics, geometry, calculus). Quick-answer calculators like percentage and unit conversion show the formula but not every step, since the calculation is a single operation.
- Can students use these for homework?
- Yes, and we recommend teachers encourage it. The step-by-step workings let students verify their own solutions and understand where they went wrong if the answer differs. Copying just the final answer without tracing the work misses the learning — but having a checker tool accelerates practice.
All Math Calculators (24)
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