General Math
Fractions, percentages, exponents, logarithms, and number operations.
Showing 28 tools
General Math
Big Number Calculator
Perform arithmetic (add, subtract, multiply) on very large integers beyond standard calculator range.
Conversion Calculator
Convert between common measurement units including length, temperature, area, and volume.
Density Calculator
Calculate density (ρ = m/V), mass, or volume when any two of the three values are known.
Exponent Calculator
Calculate base raised to any power, including fractional exponents.
Factor Calculator
Find all factors (divisors) and the prime factorization of any positive integer.
Fraction Calculator
Perform arithmetic on fractions and simplify the result automatically.
GDP Calculator
Calculate Gross Domestic Product (GDP) using the expenditure approach: C + I + G + Net Exports.
Greatest Common Factor Calculator
Find the Greatest Common Factor (GCF), also called GCD, of two or more integers — the largest number that divides them all.
Half-Life Calculator
Calculate the remaining quantity of a substance after a given number of half-lives have elapsed.
Hex Calculator
Convert numbers between hexadecimal, decimal, binary, and octal number bases.
Least Common Multiple Calculator
Find the Least Common Multiple (LCM) of two or more integers — the smallest number divisible by all of them.
Log Calculator
Calculate the logarithm of a number in any base, including log₁₀ (common log) and ln (natural log).
Mass Calculator
Convert mass between grams, kilograms, milligrams, pounds, ounces, tons, and other units.
Matrix Calculator
Perform 2×2 matrix operations: find the determinant, inverse, transpose, and multiply two matrices.
Molarity Calculator
Calculate molarity (concentration in mol/L), moles, or volume needed to prepare a solution.
Molecular Weight Calculator
Calculate molar mass (molecular weight) of common chemical compounds and elements.
Percent Error Calculator
Find the percent error between a measured and true value.
Percentage Calculator
Calculate percentages, find what percent a number is, or compute percent change.
Quadratic Formula Calculator
Solve any quadratic equation ax² + bx + c = 0 using the quadratic formula to find real or complex roots.
Random Number Generator
Generate random integers between a minimum and maximum value.
Ratio Calculator
Simplify ratios, check proportions, and solve for missing values in equivalent ratios.
Roman Numeral Converter
Convert any integer from 1 to 3999 to Roman numerals, or decode Roman numerals back to integers.
Root Calculator
Calculate the square root, cube root, or any nth root of a number.
Rounding Calculator
Round any number to a specified number of decimal places, significant figures, or a custom increment.
Scientific Calculator
Calculate square roots, trig functions, logarithms, and more.
Scientific Notation Calculator
Convert numbers to scientific notation (a × 10ⁿ) and back to standard decimal form.
Speed Calculator
Calculate speed, distance, or time when any two of the three values are known.
Weight Calculator
Convert weight or body weight between pounds, kilograms, stones, and other common units.