Math Calculators

Free online math calculators for percentage, average, ratio, quadratic equations, statistics, and more. Solve math problems instantly with step-by-step results.

Percentage Calculator Calculate percentages easily: what is X% of Y, percentage increase/decrease, percentage difference, and reverse perce... Average Calculator Calculate mean, median, mode, and weighted average of any set of numbers. Supports up to 100 values with step-by-step... Ratio Calculator Simplify ratios, find equivalent ratios, and solve proportion problems. Scale ratios up or down while maintaining the... Square Root Calculator Calculate square root, cube root, and nth root of any number. Shows perfect square check and simplified radical form. Logarithm Calculator Calculate logarithms in any base — common (log₁₀), natural (ln), and custom bases. Includes antilog and change-of-bas... Factorial Calculator Calculate factorial (n!), double factorial (n!!), and subfactorial (!n) for any positive integer. Includes permutatio... Quadratic Equation Solver Solve quadratic equations (ax² + bx + c = 0) using the quadratic formula. Shows discriminant, roots (real or complex)... Prime Number Checker Check if a number is prime, find prime factorization, and list prime numbers in any range. Includes divisibility rule... Number System Converter Convert numbers between binary, octal, decimal, and hexadecimal systems. Perform arithmetic in any base with step-by-... Statistics Calculator Calculate comprehensive statistics — mean, variance, standard deviation, quartiles, IQR, skewness, and kurtosis for a... LCM & GCD Calculator Calculate LCM and GCD (HCF) of two or more numbers. Shows prime factorization method and Euclidean algorithm with ste... Fraction Calculator Add, subtract, multiply, and divide fractions. Simplify, convert to mixed numbers, and compare fractions with step-by... Scientific Calculator Full-featured scientific calculator with trigonometry, logarithms, exponentials, factorials, memory functions, and co... 2×2 Matrix Calculator Perform 2x2 matrix operations — addition, multiplication, determinant, inverse, transpose, and eigenvalues with step-... Combinations & Permutations Calculator Calculate permutations (nPr) and combinations (nCr) with step-by-step factorial computation. Includes repetition vari... Standard Deviation Calculator Calculate standard deviation, variance, and coefficient of variation for a data set. Supports both population and sam... Linear Equation Solver Solve systems of 2 or 3 linear equations using substitution, elimination, and matrix methods. Step-by-step solution w... Matrix Determinant Calculator Calculate the determinant of 2×2, 3×3, and 4×4 matrices. Includes cofactor expansion method with step-by-step solution. Complex Number Calculator Perform arithmetic on complex numbers — add, subtract, multiply, divide. Convert between rectangular (a+bi) and polar...

How to use these calculators well

Math calculators should save time without hiding the logic. This category focuses on common school, exam, and work calculations that benefit from a quick answer plus a formula reference.

  • Use the worked example to confirm that you selected the right operation.
  • Double-check negative signs, order of operations, and percentage bases when a result looks off.
  • For study use, compare the calculator output with your manual method so the shortcut still teaches the concept.

How we review this category

Math tools are checked against standard textbook formulas and sample problems. Where possible, pages include examples and common error patterns so readers can validate the result quickly.

Related guides

Percentage Calculator: Tricks, Formulas & Examples

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Need a correction? Tell us here and include the calculator name, your inputs, and the issue you found.

About Our Math Calculators (22+ Free Tools)

Mathematics is the foundation of every quantitative field. Whether you are preparing for JEE, NEET, or board exams, our math calculators provide step-by-step solutions using standard NCERT formulas. Tools cover arithmetic (percentage, average, ratio, fractions, LCM/GCD), algebra (quadratic equations, linear equations, complex numbers), statistics (standard deviation, combinations, probability), and advanced topics (matrices, determinants, logarithms, factorials). Perfect for verifying homework, preparing for competitive exams, or quick professional calculations.

What Sets Our Calculators Apart

  • ✅ Step-by-step solutions for learning
  • ✅ Aligned with NCERT and competitive exam syllabi
  • ✅ Covers Class 10 through B.Tech level
  • ✅ Scientific calculator with 100+ functions
  • ✅ 100% free — no signup, no hidden costs
  • ✅ Works offline as a Progressive Web App
  • ✅ Mobile-friendly responsive design
  • ✅ Privacy-first: calculations run locally in your browser

Maintained by: Sagar Sahni, Calc Labz

Last updated: May 2026 · Total calculators: 22+

All calculators use validated formulas and are regularly updated. Results are for informational purposes — consult a professional for critical decisions.