Everyday academic, scientific, and business math tools for precision calculations.
Calculate percentage of a value, percentage change, and ratio percentage instantly.
Calculate retail sale prices, money saved, and stacked coupon discounts instantly.
Calculate gross profit margin percentage and cost markup percentage from cost and selling price.
Solve advanced mathematical expressions with trigonometry, powers, roots, and logarithms.
Perform arithmetic operations on proper and improper fractions with step-by-step simplification.
Simplify ratios, solve missing terms in proportions (A:B = C:D), and divide amounts into parts.
Find the arithmetic mean, median, mode, sum, and range for any set of numbers.
Find the Least Common Multiple (LCM) of two or more numbers with step factorization.
Find the Highest Common Factor (HCF) or Greatest Common Divisor (GCD) of numbers.
Calculate sample and population standard deviation, variance, mean, and sum of squares.
Compute the weighted mean from values and assigned weights for academic grades and finance.
Solve ax² + bx + c = 0 quadratic equations to find real or complex roots, discriminant, and vertex.
Check if a number is prime, view its prime factors, and discover adjacent prime numbers.
Calculate the factorial of an integer n! with trailing zeros count and mathematical expansion.
Find the number of ordered arrangements (permutations) of r elements from n total items.
Calculate the number of unordered combinations (nCr) of selecting r items from n choices.
Calculate single and compound event probabilities, percentage chances, and fractional odds.
This category groups calculators that solve related everyday problems. Each tool is mobile-first, validates inputs, gives instant results, includes an example, and links to other calculators in the same workflow. Use these pages when you want quick estimates without building a spreadsheet or hunting for separate formulas.