Math Calculators
36 free calculators
Scientific, statistics, geometry, algebra, and number theory calculators.
Percentage Calculator
Calculate percentages three ways: find X% of Y, what percent X is of Y, and percentage change between two numbers. Fast & free.
Fraction Calculator
Calculate with fractions: add, subtract, multiply, and divide fractions. Simplify fractions and convert to decimals or mixed numbers.
Standard Deviation Calculator
Calculate standard deviation, variance, and mean for any dataset. Supports both population and sample standard deviation formulas.
Statistics Calculator
Calculate descriptive statistics: mean, median, mode, range, variance, standard deviation, and quartiles for any data set.
Mean Median Mode Calculator
Calculate mean, median, mode, and range for any list of numbers. Enter data separated by commas for instant statistical analysis.
Probability Calculator
Calculate probability of single and multiple events. Find probability, complement, and combine independent and mutually exclusive events.
Z-Score Calculator
Calculate Z-score (standard score) and find percentile rank. Convert raw scores to Z-scores using mean and standard deviation.
Confidence Interval Calculator
Calculate confidence intervals for population means and proportions. Find margin of error for 90%, 95%, and 99% confidence levels.
Sample Size Calculator
Calculate the required sample size for surveys and research studies. Find minimum sample size for statistical significance.
P-Value Calculator
Calculate p-value for one-sample and two-sample t-tests and z-tests. Determine statistical significance of research results.
Ratio Calculator
Simplify ratios, scale ratios, and solve ratio proportions. Find equivalent ratios and the fourth proportional in ratio problems.
Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr). Find how many ways to arrange or choose items with or without repetition.
Triangle Calculator
Calculate triangle area, perimeter, angles, and height. Supports all triangle types: right, equilateral, isosceles, and scalene.
Pythagorean Theorem Calculator
Calculate any side of a right triangle using the Pythagorean theorem (a² + b² = c²). Find hypotenuse or missing leg instantly.
Area Calculator
Calculate area of all geometric shapes: circle, rectangle, square, triangle, trapezoid, ellipse, and more. Area formulas with examples.
Volume Calculator
Calculate volume of 3D shapes: cube, sphere, cylinder, cone, pyramid, rectangular prism, and more. Volume formulas for all shapes.
Surface Area Calculator
Calculate surface area of sphere, cube, cylinder, cone, and rectangular prism. Includes all surface area formulas with step-by-step solutions.
Quadratic Formula Calculator
Solve quadratic equations using the quadratic formula. Find real and complex roots with full step-by-step solution.
Slope Calculator
Calculate slope (gradient) between two points. Find slope, intercept, distance, and line equation for any two coordinate pairs.
Distance Calculator
Calculate the distance between two coordinate points using the distance formula. Also find midpoint and line length.
Exponent Calculator
Calculate exponents, powers, and roots. Raise any number to any power including negative and fractional exponents.
Log Calculator
Calculate logarithms: log base 10, natural log (ln), log base 2, and any custom base. Find antilog and inverse log values.
Root Calculator
Calculate square root, cube root, and any nth root of any number. Includes step-by-step solution and simplified radical form.
GCF Calculator
Find the greatest common factor (GCF) and least common multiple (LCM) for any set of numbers. Includes prime factorization method.
LCM Calculator
Calculate the least common multiple (LCM) of two or more numbers. Uses prime factorization and division methods.
Prime Factorization Calculator
Find prime factorization of any number with factor tree. Decompose numbers into prime factors step by step.
Binary Calculator
Convert binary to decimal, decimal to binary, and perform binary arithmetic. Supports binary, octal, decimal, and hexadecimal conversions.
Hex Calculator
Convert between hexadecimal, decimal, binary, and octal. Perform hex arithmetic and calculations for programming and web design.
Scientific Calculator
Free online scientific calculator with trig functions, logarithms, exponents, and statistics. Works like a real TI calculator.
Matrix Calculator
Calculate matrix operations: addition, subtraction, multiplication, determinant, inverse, and transpose. Supports 2×2 to 4×4 matrices.
Average Calculator
Calculate the average (arithmetic mean) of any set of numbers. Enter a list of numbers separated by commas for instant average.
Weighted Average Calculator
Calculate weighted average (weighted mean) when values have different importance or weights. Used for grades, GPA, portfolio returns.
Rounding Calculator
Round any number to a specified number of decimal places. Supports round up (ceiling), round down (floor), and half-up rounding rules.
Scientific Notation Calculator
Convert numbers to and from scientific notation. Perform arithmetic with numbers in scientific notation for science and engineering.
Random Number Generator
Generate random numbers within any range. Generate single numbers, sets, or sequences. Supports integer and decimal random numbers.
Long Division Calculator
Solve long division problems with step-by-step explanation. Shows dividend, divisor, quotient, and remainder with full working.
About Our Math Calculators
CalcProTool's math calculators are designed for users in the USA, UK, Canada, Australia, and Europe. Every calculator uses verified formulas, updates in real time, and requires no registration. All 36 tools in this category are completely free.
Each calculator page includes a full explanation of the formula used, step-by-step guidance, and answers to frequently asked questions. Our tools are designed to help you make informed decisions with confidence.