Free Math Calculators – Page 5

100+ free calculators and solvers with step-by-step working and graphs. Every answer is checked. Free to use. No sign-up needed.

Statistics & Probability

⚅ Dice Probability CalculatorFind the exact probability of rolling a total with any number of dice and sides (d6, d20 …): exactly, at most or at least, with a chart. Graph ? Random Number GeneratorGenerate truly random whole numbers between any minimum and maximum, with or without repeats.

Calculus & Graphing

d/dx Derivative CalculatorDifferentiate any function with every rule shown: power, product, quotient and chain rules. Graph ∫ Integral CalculatorFind indefinite and definite integrals with steps: power rule, substitution and integration by parts. Graph lim Limit CalculatorEvaluate limits step by step: direct substitution, L'Hôpital's rule for 0/0, and limits at infinity. Graph f(x) Graphing CalculatorPlot up to three functions with an animated graph. Graph Σ Taylor Series CalculatorFind the Taylor or Maclaurin polynomial of a function up to order 8, with exact coefficients and a graph of the approximation hugging the curve. Graph ∫f−g Area Between Curves CalculatorFind the area between two curves over an interval. Graph Σ▮ Riemann Sum CalculatorApproximate an integral with left, right or midpoint rectangles or the trapezoidal rule. Graph xₙ Newton's Method CalculatorFind a root of any equation with Newton's method. Graph x|y Function Table CalculatorMake a table of values for any function of x over a range and step you choose, with each point plotted on an animated graph. Graph max Maxima & Minima CalculatorFind the critical points, local maxima and minima and points of inflection of a function, with the derivative steps and a graph. Graph f̄ Average Value of a Function CalculatorFind the average value of a function over an interval using integration, and see the rectangle with the same area as the curve. Graph V↻ Volume of Revolution CalculatorFind the volume of a solid formed by rotating a curve around the x-axis with the disc method, exactly in terms of π where possible. Graph

Everyday Maths & Conversions

Age Age CalculatorCalculate your exact age in years, months and days from your date of birth, plus total days lived and a countdown to your next birthday. ⇄ Unit ConverterConvert units of length, weight, volume, area, speed, time, temperature and data storage with exact conversion factors and the working shown. km/h Speed, Distance & Time CalculatorFind speed, distance or time from the other two, in km and km/h or miles and mph, with the formula triangle and a distance–time graph. Graph h:m Time CalculatorWork out the hours and minutes between two times (including overnight), or add and subtract hours and minutes from a clock time. 31 Days Between Dates CalculatorCount the days between two dates, in weeks and days, with the number of weekdays (Monday to Friday). BMI BMI CalculatorCalculate body mass index from weight and height in metric or imperial units, with the adult BMI category and healthy weight range. Graph