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Home/Calculators/Math

Math

Math calculators with clear steps — percentages, averages, fractions, roots, exponents, and more.

44 calculators

Statistics (11)

11 matches· Statistics

Statistics

11
  • Average CalculatorArithmetic and weighted mean with a visual sum÷count layout and step-by-step work.
  • Mean, Median, Mode, Range CalculatorArithmetic mean, median, mode(s), and range for comma-separated data — with ordered list, frequency table, and worked steps.
  • Statistics CalculatorArithmetic and geometric means, σ and s, variance, quartiles, IQR, and Σx / Σx² from a comma-separated list.
  • Standard Deviation CalculatorPopulation σ and sample s with variance, mean, sum, standard error, and margin of error for the mean.
  • Number Sequence CalculatorArithmetic, geometric, and Fibonacci sequences: nth term, partial sum, and term list with clear formulas.
  • Probability CalculatorIndependent two-event probabilities, solver, series of trials, normal range area, simple favorable/total, and Bayes.
  • Permutation and Combination CalculatornPr and nCr without replacement, plus with-replacement n^r and multichoose, with factorials and steps.
  • Sample Size CalculatorMinimum survey sample size, margin of error from n, or mean-study sizing — with optional finite population correction.
  • Z-score CalculatorCompute z from x, μ, σ; convert between z and normal probabilities like a z-table; or area between two z-scores.
  • Confidence Interval Calculatorz confidence interval for a mean (x̄ ± z·σ/√n) or Wald interval for a proportion, with SE, margin, and multiple interval forms.
  • P-value CalculatorConvert between z and normal p-values (left, right, center, between, two-tail), or one-/two-tailed p from z with optional α.

You might also like

  • Percentage CalculatorSolve percentage proportion, common phrases, difference, and percent change.→
  • Fraction CalculatorAdd, subtract, multiply, divide, simplify, and convert fractions and mixed numbers.→
  • Area CalculatorArea of square, rectangle, triangle (Heron), trapezoid, circle, sector, ellipse, and parallelogram — with length units and square-unit conversions.→
  • Triangle CalculatorSolve any triangle from three of sides a, b, c and angles A, B, C. Get area, medians, inradius, circumradius, and a scale diagram.→
  • Distance Calculator2D/3D coordinate distance and midpoint; lat/lon great-circle with Lambert and haversine; DMS or decimal; OpenStreetMap pick and place search.→
  • Percent Error CalculatorCompare an observed value to a true value and get absolute, relative, and percent error.→

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Math calculators

  • General
  • Statistics
  • Geometry
  • Percentage Calculator
  • Average Calculator
  • Fraction Calculator
  • Area Calculator
  • Triangle Calculator
  • Distance Calculator
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Formula Library

Searchable knowledge base of formulas — each with its own page, linked tools, and related formulas.

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Popular

  • Unit Converter (Universal)Pick any unit group and convert between its units.
  • LengthMeters, feet, inches, kilometers, miles, and more.
  • TemperatureTemperature conversion with precise factors.
  • Weight & MassKilograms, pounds, ounces, tons, and stone.
  • BinaryBinary conversion with precise factors.
  • Time ZoneConvert local date/time between IANA time zones.
Browse all converters→