Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms, and more
27 free, accurate calculators for mathematics
Full-featured scientific calculator with trigonometry, logarithms, and more
Add, subtract, multiply, and divide fractions with step-by-step solutions
Calculate percentages, percentage change, and percentage of a number
Full-featured scientific calculator with trigonometry, logarithms, and more
Add, subtract, multiply, and divide fractions with step-by-step solutions
Calculate percentages, percentage change, and percentage of a number
Simplify ratios and solve proportion problems
Solve quadratic equations using the quadratic formula with step-by-step working
Convert between binary, decimal, hexadecimal, and octal number systems
Generate random numbers within a custom range
Calculate mean, median, mode, variance, and standard deviation
Find the Least Common Multiple and Greatest Common Divisor of numbers
Calculate log, natural log, and antilogarithm with any base
Calculate the percentage of error between an observed value and the true expected value.
Calculate the half-life, initial quantity, remaining quantity, or time elapsed for a radioactive or decaying substance.
Find the slope, distance, angle, and equation of a line between two coordinates.
Calculate the probability of single and multiple events, including intersections and unions.
Calculate mean, median, mode, range, and standard deviation from a dataset.
Calculate the z-score (standard score) and p-value from a raw data point, mean, and standard deviation.
Calculate the square root, cube root, or any nth root of a number.
Round numbers to the nearest whole number, decimal place, or significant figure using various rounding modes.
Convert numbers to and from scientific notation, engineering notation, and E-notation.
Find the prime factors of any integer, displayed in list and exponential forms.
A standard four-function calculator for everyday basic arithmetic.
Calculate the nth term and the sum of arithmetic or geometric sequences.
Calculate the result of raising a base number to a specific power, including negative and fractional exponents.
Determine the minimum number of people you need to survey or test to get statistically significant results.
Calculate combinations (nCr) and permutations (nPr) to find how many ways you can choose items from a set.
Calculate the margin of error and confidence interval from a sample mean and standard deviation.
Calculate the Euclidean distance between two points in 2D or 3D space.
Hold a credit card (85.6mm / 3.37in wide) against the ruler and adjust to match