Math calculators
Percentage, fractions, roots, statistics, and geometry in this tab. Not a CAS or graphing calculator.
43 tools
Subcategories
In this group
Start with the scientific calculator or percentage. Order of operations is PEMDAS. Statistics and geometry have their own groups.
Fractions, GCD, LCM, primes, and the quadratic formula live in this group. Integer binary math is binary calculator. Base conversion without arithmetic is number base.
- Adding Machine Running total of a list: sum, count, and mean. Negatives allowed as subtractions.
- Binary Math Calculator Integer binary math and bitwise ops. Output in decimal, binary, hex, and octal. Stays in this tab.
- Combination Calculator C(n, k) = n! / (k! (n − k)!) for unordered selections.
- Decimal to Fraction Calculator Best-fit fraction for a decimal, searching denominators up to the cap you set.
- Distance Between Two Points Euclidean distance between two plane points.
- Exponent Calculator base^exponent with IEEE floating point. Rejects non-finite results.
- Factorial Calculator n! for an integer from 0 to 170. 0! is 1.
- Fraction to Decimal Calculator Divide a fraction to a decimal and show the simplified form.
- Fraction Calculator Add, subtract, multiply, or divide two fractions. Result is simplified, mixed, and decimal.
- GCD Calculator Greatest common divisor of two or more integers, Euclidean algorithm.
- Increase or Decrease by Percent Increase or decrease a number by a percent. Returns the new amount and the difference.
- LCM Calculator Least common multiple of two or more integers. Rejects results beyond safe integers.
- Logarithm Calculator log_base(value), plus ln and log10 of the same value. Value must be positive.
- Long Division Calculator Integer division with quotient, remainder, and a reconstruction check. Truncates toward zero.
- Mixed Number Calculator Convert mixed numbers to improper fractions and back, then simplify.
- Nth Root Calculator Principal real nth root. Even roots of negatives are rejected. n cannot be 0.
- Order of Operations Calculator Evaluate an arithmetic expression with ^ as power, * / before + −, and parentheses. Same parser as the scientific calculator.
- Percentage Change Calculator Percent change from an original value to a new value, plus the raw difference.
- What Is P Percent of X What is P percent of X. Same arithmetic as the percentage hub, locked to this job.
- Percentage to Fraction Convert a percent to a simplified fraction, mixed number, and decimal.
- Percentage Calculator Everyday percentage jobs: of, what percent, change, increase, and decrease. Figures stay on this device.
- Permutation Calculator P(n, k) = n! / (n − k)! for ordered selections. n at most 170 on this page.
- Prime Factorization Prime factorization of an integer from 2 to 1,000,000,000,000.
- Prime Checker Trial-division primality for integers up to 1,000,000,000,000 in absolute value.
- Proportion Calculator Solve a/b = c/d. Leave exactly one of a, b, c, d blank.
- Quadratic Formula Calculator Roots of ax² + bx + c = 0, including complex roots when the discriminant is negative.
- Ratio Calculator Simplify a:b and optionally solve a:b = c:x.
- Scientific Calculator Type an expression or use the keypad. Trigonometry uses the angle mode you pick. Nothing is uploaded.
- Slope Calculator Slope, y-intercept, line equation, and distance between two points. Vertical lines are flagged.
- Square Root Calculator Principal square root. Negatives are rejected as non-real on this page.
- What Percent Is X of Y What percent is A of B. Whole cannot be 0.
- Average Calculator Arithmetic mean, sum, count, min, max, and range of a list you type.
- Median and Mode Median and mode of a numeric list. Ties for mode are listed together.
- Standard Deviation Calculator Population and sample standard deviation and variance for a list you type.
- Variance Calculator Population and sample variance, with matching standard deviations.
- Weighted Average Weighted average from value-weight pairs. Weights must sum to more than 0.
- Z-Score Calculator z = (x − mean) / SD. Standard deviation cannot be 0.
- Circle Calculator Radius, diameter, circumference, and area. Enter any one; the rest follow with π from this device.
- Cylinder Calculator Right circular cylinder: volume, lateral area, and total surface area.
- Pythagorean Theorem Calculator Solve a² + b² = c². Enter exactly two of a, b, and c.
- Rectangle Calculator Rectangle area, perimeter, and diagonal. A square is the case length = width.
- Sphere Calculator Sphere volume and surface area from radius.
- Triangle Calculator SSS triangle: Heron area, perimeter, all three angles, side class, and acute/right/obtuse.