Fast, verified mathematical calculators for percentages, scientific notation, fractions, quadratic equations, Pythagorean theorem, exponents, logs, and statistics.
Compute what is X% of Y, percentage increase/decrease, and ratios with instant arithmetic breakdowns.
Add, subtract, multiply, and divide fractions with step-by-step common denominators and reduced fractions.
Simplify ratios into lowest terms and scale recipes or dimensions with step-by-step factor reductions.
Solve for the missing term in any proportion A/B = C/D using cross-multiplication steps.
Calculate the arithmetic mean average of a series of numbers with count, sum, and step working.
Statistical calculator providing mean, median, mode, range, minimum, maximum, and sorted dataset.
Fast, accurate online scientific calculator supporting parentheses, trigonometry, logarithms, powers, and roots.
Calculate base raised to any positive, negative, or fractional exponent with expanded working.
Find the square root of any number with decimal approximation and simplified radical radical form (e.g. √72 = 6√2).
Calculate the cube root of positive and negative numbers with simplified radicals and decimals.
Find the Greatest Common Factor (GCF / HCF / GCD) of numbers with prime factorizations and Euclidean division steps.
Find the smallest positive integer divisible by both input numbers with prime factorization steps.
Test whether any integer is prime or composite, find prime factors, and discover the nearest prime numbers.
Find all positive factors, factor pairs, and prime factorization tree of any positive integer.
Master mental percentage calculation shortcuts. The reversible percentage rule x% of y = y% of x, 10% and 1% building blocks, and shopping discounts.
Calculate percentage change accurately. Formula ((New - Old) / Old) * 100%, retail markups, discounts, and inflation math.
Master scientific notation. Standard form a * 10^b, positive vs negative exponents, multiplying and dividing large scientific numbers.
Convert any fraction into a decimal. Long division methods, terminating vs repeating decimals, and printable reference chart.
Master quadratic equations ax^2 + bx + c = 0. Quadratic formula derivation, discriminant Delta = b^2 - 4ac interpretation, and worked examples.
Demystify logarithms. Logarithms as inverse exponents log_b(x) = y <=> b^y = x, natural logs ln(x), Richter earthquake scale, and pH chemistry.
Learn the 5 golden rules of significant figures (sig figs). Leading vs trailing zeros, multiplication rounding rules, and lab measurement precision.
