Math & statistics calculators

Arithmetic, algebra, geometry and statistics, with the working shown. 49 calculators.

• Angle converterDegrees, DMS, radians, gradians and turns.
• Area calculatorArea of nine common shapes in any unit.
• Big number calculatorExact arithmetic on integers of any size.
• Binary calculatorBinary arithmetic, bitwise operations and conversion.
• Circle calculatorArea, circumference, diameter and radius from any one.
• Confidence interval calculatorConfidence intervals for a mean or a proportion.
• Decimal, fraction and percent converterDecimal ↔ fraction ↔ percent.
• Distance calculatorDistance between points, or between two map coordinates.
• Exponent calculatorPowers, including negative and fractional, or solve for the exponent.
• Factor calculatorAll factors, factor pairs and prime factorization.
• Fraction calculatorFractions and mixed numbers, simplified, with steps.
• GCF calculatorGreatest common factor and all common factors.
• Golden ratio calculatorGolden-ratio proportions for any length.
• Half-life calculatorExponential decay: amount left, half-life or time.
• Hex calculatorHexadecimal arithmetic, bitwise operations and conversion.
• LCM calculatorLeast common multiple of a list of numbers.
• Linear interpolation calculatorInterpolate between two known points.
• Log calculatorLogarithms to any base, ln and log10.
• Long division calculatorLong division with every step written out.
• Matrix calculatorMatrix arithmetic, determinant, inverse and transpose.
• Mean, median, mode calculatorAverage, median, mode and range of a list.
• Modulo calculatora mod n and integer division, sign conventions explained.
• Number base converterConvert numbers between bases 2 to 36.
• Number sequence calculatornth term and sum of arithmetic, geometric and Fibonacci sequences.
• P-value calculatorp-values from z, t, chi-square and F statistics.
• Percent error calculatorError of a measurement as a percentage.
• Percentage calculatorPercent of, what percent, percent change.
• Permutation and combination calculatornPr and nCr, with or without repetition.
• Prime number calculatorPrime check, next prime and primes in a range.
• Probability calculatorTwo-event, repeated-trial and binomial probabilities.
• Quadratic formula calculatorRoots of ax² + bx + c = 0, real or complex, with steps.
• Random number generatorRandom numbers in a range, with or without repeats.
• Ratio calculatorSimplify ratios and solve proportions.
• Right triangle calculatorPythagorean theorem: missing side, angles and area.
• Root calculatorSquare, cube and nth roots, with simplified radicals.
• Rounding calculatorRound to places, significant figures or the nearest 10.
• Sample size calculatorSurvey sample size for a margin of error.
• Scientific calculatorType any expression: trig, logs, powers, roots, factorials.
• Scientific notation calculatorConvert to scientific and engineering notation.
• Significant figures counterHow many significant figures a number has.
• Slope calculatorSlope, angle and equation of the line through two points.
• Standard deviation calculatorStandard deviation and variance with the working shown.
• Surface area calculatorTotal surface area of eight solids.
• System of equations solverSolve 2×2 and 3×3 linear systems.
• Triangle calculatorAll sides, angles and area from three known parts.
• Trigonometry calculatorAll six trig functions of an angle.
• Vector calculatorDot and cross products, magnitudes and angle.
• Volume calculatorVolume of eight solids, convertible to gallons or liters.
• Z-score calculatorz-score, percentile and normal probabilities.