Mathematics Tools

Work out your exact age — or the time between any two dates — in years, months, weeks, days, hours, minutes and seconds. Shows your next birthday countdown, the weekday you were born, your zodiac s...

Solve equations instantly. Type any equation and click Solve.

In real-world data — expenses, populations, invoices — a leading 1 shows up about 30% of the time and a 9 under 5%. Paste a column of numbers and this scanner compares their first digits with the l...

Expand any binomial such as (2x + 3)⁵ or (x − 1/y)⁸ term by term, with Pascal's triangle, the binomial coefficients, a “find term k” locator and Newton's generalised (1 + x)ⁿ approximation for frac...

Work with derivatives and integrals. Enter a function of x, choose operation, and generate step‑by‑step results.

The workhorse test for counting data: does an observed distribution match what theory predicts (goodness of fit), and are two categorical variables related (contingency test)? Live contributions, χ...

Angle between hour and minute hands. Minute hand = 6° × minutes. Hour hand = 0.5° × (60×hours + minutes). The smaller angle is min(θ, 360 − θ).

Read the hands, set the clock yourself, and work out elapsed time — three modes, five questions each, with instant feedback. The clock is drawn locally; nothing leaves your device.

Take any positive whole number: halve it if even, triple-and-add-one if odd. Every number ever tried falls into the 4-2-1 loop — nobody has proved why. Chart any starting value (BigInt-sized), meas...

Type any complex function f(z) and see it as a 3D landscape: height is |f(z)| or Re/Im, colour is the phase (domain colouring). Zeros become valleys, poles become towers. Evaluate f at any point, l...

Perform operations with complex numbers in rectangular (a+bi) and polar (r∠θ) forms. Visualize results on the complex plane with step-by-step solutions. ✅ Supports: + − × ÷ √ ^ log sin cos conjugat...

Every number, rational or irrational, unfolds into a chain of whole numbers: a₀ + 1/(a₁ + 1/(a₂ + …)). Cut the chain early and you get the best fraction there is for the size — 355/113 for π, Pell ...

Type a point in any system and the other two update instantly, with the point drawn in 3D and its radius and angles traced out so you can see what each number means. Switch between the physics (ISO...

WORKING CALCULATOR for Computer Science & Mathematics. Real calculations for set theory, combinatorics, and logic. Everything works instantly!

Solve algebraic equations step-by-step. Supports linear, quadratic, and cubic equations. Try examples below!

COMPLETE MATH PREP - Generate practice problems with step-by-step solutions. Track your progress across 500+ questions covering all major topics.

Calculate powers, roots, and exponential functions with detailed steps and visualizations. Perfect for students learning algebra and calculus.

List the factors and multiples of any number, then practise finding the highest common factor, lowest common multiple and factor/multiple facts.

Enrico Fermi walked into interviews and produced piano-tuner counts out of thin air: chain a handful of round numbers together and the answer lands within a factor of ten of the truth. Pick a class...

Interactive scientific formula calculator with detailed explanations, 3D visualizations, and step-by-step solutions. Perfect for students and professionals in STEM fields.

Master fractions with calculations, visual representations, and step-by-step explanations. Perfect for students learning fractions!

Type any z = f(x, y) formula and watch it become a spinning 3D mountain range. Safe built-in math parser (no eval), orbit/zoom controls, height colormaps and a random-function dice for beautiful ac...

Find the greatest common factor, least common multiple and prime factorisation of one or more integers. Enter a single integer to also see whether it is prime and its neighbouring primes. Euclidean...

Calculate the area, perimeter, or volume of common shapes.

Calculate areas, perimeters, and volumes for common shapes. Choose a shape, enter dimensions, and get results with formulas shown.

Calculate GPA for universities worldwide. Supports multiple grading systems and conversions.

Calculate weighted grades, predict final scores, and see what you need to achieve your target grade.

Interactive math visualization: Plot functions, find roots, compute derivatives/integrals, solve equations, and create beautiful graphs. Perfect for students, teachers, and professionals.

Convert between hexadecimal, decimal, binary, octal, and ASCII with bitwise operations. Essential for developers, modders, and reverse engineering!

Paste a table of x,y readings and ask for values in between. Linear interpolation rides the segments; the Lagrange polynomial threads every point at once and prints its expanded formula. Goes backw...

Paint 1s and don't-cares onto a two, three or four-variable K-map and it finds the prime implicants for real — no eyeballing wraps — returning a minimal sum-of-products or product-of-sums with ever...

Surfaces that shouldn't exist: a Möbius strip with adjustable twists, a Klein bottle (inside IS outside), and torus knots you design with p/q sliders. Points, wireframe or solid candy render.

Perform comprehensive linear algebra operations with step-by-step solutions, matrix visualization, and educational explanations.

Every linear-programming optimum lives on a corner. Build the feasible region from up to six inequality constraints, watch the objective line slide across it, and read the winning vertex straight o...

Type any 3×3 matrix and watch it smoothly warp space: the unit cube becomes a parallelepiped whose volume is the determinant, and real eigenvectors light up as the lines that only stretch. Computes...

Pick two objects — point, line or plane — and get the shortest distance, the intersection point or line, the angle between them and the closest points, all drawn in 3D. Handles parallel, skew, coin...

Evaluate logarithms in any base, convert between bases, and solve for an unknown exponent. Shows the change-of-base working so you can follow it on paper.

See every step of long division — divide, multiply, subtract, bring down — then practise on a generated calculation with full remainder and check-back working. All local, nothing sent anywhere.

Fill a grid so every row, column and both diagonals add to the same magic constant. Generate perfect squares of any order 3–14 with the real historical algorithms (Siamese ladder, 4×4 complement, S...

Calculate arithmetic and geometric sequences and series. Includes step-by-step solutions and visual representations.

Step beyond calculation into mathematical discovery. Visualize concepts, see proofs unfold, find connections humans have never seen.

Generate random maths flashcards for quick practice. Perfect for studying, teaching, or mental math warm-ups. 🎯 Interactive • Timed practice • Multiple topics • Progress tracking

Solve mathematical expressions, equations, and practice calculations. Supports arithmetic, algebra, trigonometry, and more!

Paste numbers separated by commas, spaces or new lines. Sample standard deviation uses n − 1 (Bessel); population uses n. Mode lists every most-frequent value.

Work out the mean, median, mode and range of a data set, see the full working, and learn when each average is the right tool. 5 rounds, instant feedback, all on your device.

A 60-second arithmetic workout with three difficulty levels, streak bonuses and a review of every question you missed. Sharpens everyday number sense — tips, change, discounts.

Paste any ordered series — sales, signups, call volumes, temperatures — and every average you can pick (simple, exponential, weighted) is scored against the data's own history before it dares to pr...

Comprehensive number theory laboratory: Explore prime numbers, factorization, modular arithmetic, sequences, and advanced mathematical properties. Perfect for students, educators, cryptography enth...

Type any expression and see it solved one operation at a time with the reason for each step — no calculator tricks, no guessing. Then take the 5-question practice round with worked solutions. Every...

Start from a ten-triangle seed and watch an inflation rule grow a patch that can never repeat: thick and thin rhombi assembled from Robinson triangles, exactly the construction Roger Penrose used t...

Work out the percentage increase or decrease between two numbers, plus reverse percentages and a worked price-change example.

Master percentages with advanced calculations, visualizations, and real-world applications. From basic math to financial analysis!

Explore the five Platonic solids and their Archimedean cousins in shaded 3D. Morph any solid into its truncation, overlay its dual, and get exact volume, surface area, in/mid/circumradius and dihed...

Click vertices onto a grid (or type coordinates) and get the exact area of any polygon — even weird L-shapes, arrowheads and plots of land — using the surveyor's shoelace formula, with the full cro...

Beyond quadratics, closed-form roots die at degree five — so solve numerically instead. Type any polynomial up to degree 8 and Durand–Kerner marches all of its complex roots into existence simultan...

Break any number into its prime factors with a full working ladder, learn the divisibility rules, then practise finding the next prime factor yourself. Primes are the building blocks of every whole...

Your gut feeling about chance is usually wrong — prove it to yourself. Simulate the Monty Hall problem, the birthday paradox and coin-flip streaks with thousands of instant trials.

Name the two first-branch events and their conditionals, and the whole tree draws itself: every path probability, the marginal for each second-stage outcome, and the famous flip — P(A | B) computed...

Calculate probabilities for dice, cards, distributions, and real-world scenarios.

Find the missing side of a right-angled triangle with the Pythagorean theorem — plus the area, perimeter and both acute angles.

Solve ax² + bx + c = 0 with the quadratic formula — real or complex roots, with every step shown.

π rad = 180°. Also shows revolutions and a reduced π-fraction when it is close to a simple multiple of π.

Solve a/b = c/d for the blank, simplify a ratio, and scale a recipe-style mix. Leave exactly one of A, B, C, D empty. Cross-multiply: A × D = B × C.

Type any function, drag the number of rectangles, and watch the classic left/right/middle/trapezoid sums close in on the true integral. Live shaded plot, error against a high-precision reference, a...

Convert numbers to Roman numerals and back, with a step-by-step breakdown of how each numeral is built. Handles 1–3,999 in standard notation and up to 3,999,999 with overline (vinculum) notation. I...

Three legendary ways to hunt for where f(x) = 0, run side by side with every iteration, error and failure mode on display: guaranteed-but-slow bisection, lightning-fast Newton–Raphson (and exactly ...

Master rounding rules and quick estimation. Round any number to a chosen place, then estimate answers to real-life word problems with 5-round quizzes and full working.

Full-featured scientific calculator with trigonometry, logarithms, powers, and memory functions. Works offline.

Convert a number to scientific / engineering notation and round to significant figures. 1.23 × 10⁴ is 12300. Trailing zeros in 1000 are ambiguous — say how many sig figs you want.

Find any term and the running sum of arithmetic or geometric sequences, test a geometric series for convergence, and see the working for the formula you used.

Pick a solid, type its dimensions and watch it rebuild in 3D. Get the volume, total and lateral surface area, capacity in litres and gallons, diagonals and slant heights — with the formula and work...

Feed it two or three linear equations and watch elimination, substitution or Cramer's rule unwind line by line in exact fractions — never rounded decimals. Parallel and identical lines get diagnose...

Spin any curve y = f(x) around the x- or y-axis and watch the 3D solid form. Get the volume by disc/washer and shell methods, the surface area and centroid, with an optional inner curve for washers...

Fill in any two of speed, distance and time; the third is calculated. Swap units without changing the physics: metres, kilometres, miles, knots, hours, minutes, seconds.

V_sphere = 4/3 π r³, A = 4 π r². Cylinder π r² h. Cone (1/3) π r² h. Enter radius and height in the same units; volume comes out in those units cubed.

Comprehensive statistical analysis tool with descriptive statistics, probability distributions, hypothesis testing, and data visualization. This tool is supported by user contributions .

Four jobs in one desk: strip perfect squares out of a root with every factor shown, collect like surds across an expression, expand (a+b√c)(d+e√c) the FOIL way, and rationalise a denominator by its...

Type any surface z = f(x, y) and see its curvature painted onto it: warm where it bends like a dome (K > 0), cool where it curves like a saddle (K < 0). Move a probe to get the tangent plane, norma...

Drill the 1–12 times tables with instant feedback, streak tracking and a review of the facts you get wrong. Includes a full 12×12 grid and memory tricks. Everything runs in your browser — no sign-u...

Solve any triangle from three known parts — sides, angles, or both. Works out the missing sides and angles, area, perimeter, in-circle and circum-circle, shows the law-of-sines or law-of-cosines st...

Sin = Opposite / Hypotenuse Cos = Adjacent / Hypotenuse Tan = Opposite / Adjacent

Enter up to three vectors and see them as glowing arrows in 3D. Instantly get the dot product, cross product, angle between them, projection, parallelogram area, scalar triple product and parallele...

Type any 3D vector field F = (P, Q, R) and see it as a forest of glowing arrows with flowing particles. Calculates divergence and curl at any point, both numerically and visually, and integrates th...

Type two lists and watch the Venn diagram draw itself — union, intersection, symmetric difference and per-zone items are listed.