Calculators / Math
Explore our collection of accurate, instant mathematical calculators. Solve percentages, fractions, proportions, equations, and advanced arithmetic with step-by-step solutions.
All Tools in this Category42
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers with step-by-step arithmetic breakdown.
Percentage Decrease Calculator
Calculate percentage decrease, percent reduction, markdown discounts, and relative drop.
Percentage Change Calculator
Calculate the exact percentage change, relative growth delta, and difference between an initial and final value.
Percentage Calculator
Calculate percentage values, percentage of totals, and relative percentage comparisons.
Median Calculator
Find the median, mean, mode, quartiles Q1/Q3, IQR, and statistical outliers for any dataset.
Mode Calculator
Find the mode, frequency distribution, unimodal/bimodal status, and companion mean/median.
Compound Interest Calculator
Calculate compound interest growth, future investment value, and accumulated interest with regular contributions.
Percentage Increase Calculator
Calculate percentage increase, percent growth, and relative difference between two values.
Average Calculator
Calculate the arithmetic mean, median, mode, geometric mean, sum, and statistical range from a set of numbers.
Mean Calculator - Arithmetic, Geometric & Harmonic Average
High-precision mean calculator for computing arithmetic, geometric, harmonic, and RMS averages with detailed statistical dispersion metrics.
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers with step-by-step simplification to simplest terms.
Decimal to Fraction Calculator
Convert decimal numbers into exact proper fractions, improper fractions, or mixed numbers in simplest terms.
Fraction to Decimal Calculator
Convert proper fractions, improper fractions, and mixed numbers into exact decimal numbers and percentages.
LCM Calculator
Calculate the Least Common Multiple (LCM / LCD) of any set of numbers with step-by-step prime factorization breakdowns.
Prime Number Checker
Check if a number is prime or composite, discover its divisors, and find neighboring prime numbers.
Factor Calculator
Calculate all factors, factor pairs, divisor counts, and prime factorization of any positive integer instantly.
Permutation Calculator
Calculate the total number of ordered permutations (nPr) of choosing r elements from a set of n items.
Combination Calculator
Calculate the total number of unordered combinations (nCr) of choosing r elements from a set of n items.
Quadratic Formula Calculator
Solve quadratic equations ax² + bx + c = 0, find real and complex roots, discriminant, and parabola vertex.
Pythagorean Theorem Calculator
Calculate right triangle hypotenuse and leg lengths using the Pythagorean Theorem.
Circle Calculator
Calculate circle radius, diameter, circumference, and area from any single known circular parameter instantly.
Ratio Calculator
Solve proportions A:B = C:D for missing variable X, simplify ratios, scale recipes, and identify aspect ratios.
Discount Calculator
Calculate the final discounted price, total savings, and post-tax total from original price and discount percentages.
Proportion Calculator
Solve proportions (A/B = C/D) and find missing values with step-by-step cross-multiplication.
Square Root Calculator
Calculate square roots, cube roots, and nth roots with simplified radical form and decimal precision.
Exponent Calculator
Calculate powers a^b, negative exponents, fractional roots, scientific notation, and modular exponentiation.
Log Calculator
Calculate logarithms for any base, natural log ln(x), common log log10(x), and binary log log2(x).
Rounding Calculator
Round numbers to nearest integer, decimals, or place value using Half Up, Banker's Rounding, Ceil, and Floor.
GCF Calculator
Find the Greatest Common Factor (GCF / GCD / HCF) of any set of numbers with step-by-step Euclidean algorithm divisions.
Remainder Calculator
Find integer quotient, remainder, mixed fraction, and decimal value for any division a ÷ b.
Absolute Value Calculator
Calculate absolute value |x|, 1D distance |A - B|, complex modulus |a + bi|, and solve |ax + b| = c.
Probability Calculator
Calculate single event probability, complementary events, two independent events, and odds ratios.
Slope Calculator
Calculate line slope m, inclination angle, grade percentage, and equation y = mx + b.
Midpoint Calculator
Calculate 2D/3D midpoint coordinates M, half-segment length, and solve for missing endpoints.
Distance Calculator
Calculate 2D and 3D Euclidean distance between coordinates, Manhattan metric, and displacement vectors.
Triangle Calculator
Calculate triangle area via Heron's formula, perimeter, all 3 angles, and inradius/circumradius.
Rectangle Calculator
Calculate rectangle area, perimeter, diagonal, and circumcircle with step-by-step geometry formulas.
Area Calculator
Calculate surface area and perimeter for circle, rectangle, triangle, trapezoid, and ellipse.
Volume Calculator
Calculate 3D volume, total surface area, and liquid capacity for 6 solid figures.
Sphere Calculator
Calculate sphere volume, surface area, radius, diameter, and hemisphere properties with step-by-step formulas.
Cylinder Calculator
Calculate cylinder volume, lateral area, total surface area, and fluid capacity with step-by-step formulas.
Cone Calculator
Calculate cone volume, slant height, lateral area, and total surface area with step-by-step formulas.