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35 Free Interactive Tools

Mathematics Calculators

Arithmetic, algebra, geometry, and calculus for students.

geometry Free Online

Area Calculator for Geometric Shapes

Compute area of Rectangles ($A = b \times h$), Trapezoids ($A = \frac{B+b}{2}h$), Ellipses ($A = \pi a b$), and Parallelograms.

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arithmetic Free Online

Standard Basic Calculator (Arithmetic & Percentage)

Elementary arithmetic calculator for standard operations: addition ($+$), subtraction ($-$), multiplication ($\times$), and division ($\div$).

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number-systems Free Online

Big Number Calculator (Large Operations & Giant Powers)

Compute addition, subtraction, multiplication, and powers of high magnitude big numbers without precision loss.

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number-systems Free Online

Binary Calculator (Base 2 Conversion & Arithmetic)

Convert integers between Decimal Base (10) and Binary Base (2), computing total required Bits.

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geometry Free Online

Circle Calculator (Radius, Diameter, Area & Circumference)

Compute Area ($A = \pi r^2$), Circumference ($C = 2\pi r$), and Diameter ($d = 2r$) of any circle.

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arithmetic Free Online

Common Factors & Multiple Divisors Calculator

Find common factors, GCD, and LCM for 3 positive integers ($a, b, c$).

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geometry Free Online

Distance Between 2 Points Calculator (2D & 3D Geometry)

Calculate Euclidean Distance in 2D plane ($d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$) and 3D space between two points.

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arithmetic Free Online

Exponent & Power Calculator (x^y)

Calculate powers with integer, decimal, or negative bases and exponents ($x^y$) using exponent rules.

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arithmetic Free Online

Factor & Divisor Calculator

Find all integer factors and factor pairs of any positive number, counting the total number of divisors.

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arithmetic Free Online

Fraction Calculator (Add, Subtract, Multiply & Divide)

Calculate addition, subtraction, multiplication, and division of two fractions with GCD reduction and mixed number output.

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arithmetic Free Online

Greatest Common Factor Calculator (GCF / GCD)

Calculate the Greatest Common Factor (GCF / GCD) of two integers using the Euclidean Algorithm.

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number-systems Free Online

Hexadecimal Calculator (Base 16, Decimal & HEX Colors)

Convert decimal integers to Hexadecimal Base 16 (0-9, A-F) and compute byte equivalents and HEX colors.

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arithmetic Free Online

Least Common Multiple Calculator (LCM)

Calculate the Least Common Multiple (LCM) of numbers using the product and GCD relationship algorithm.

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arithmetic Free Online

Logarithm Calculator (Base 10, Natural ln & Base b)

Calculate common logarithm ( $\log_{10}$ ), natural logarithm ( $\ln$ ), and logarithm to any custom base $b$ ( $\log_b(x)$ ).

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arithmetic Free Online

Long Division Calculator with Remainder & Decimal Quotient

Compute long division with integer quotient and remainder ( $D = d \times q + r$ ) and decimal quotient.

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arithmetic Free Online

Math & Statistics Calculators Central Hub

Central hub unifying 45 specialized calculators across Arithmetic, Algebra, Geometry, Statistics, Probability, and Number Systems.

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algebra Free Online

Matrix Calculator (2x2 Determinant & Trace)

Compute Determinant ( $|A|$ ), Trace ( $Tr(A)$ ), Transpose, and Invertibility for 2x2 square matrices.

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algebra Free Online

Number Sequence Calculator (Arithmetic & Geometric)

Compute nth term ( $a_n$ ) and sum of series ( $S_n$ ) for arithmetic and geometric progressions.

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algebra Free Online

Percent Error, Absolute & Relative Error Calculator

Calculate Percent Error ( % Error ), Absolute Error, and Relative Error comparing experimental to theoretical values.

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arithmetic Free Online

Advanced Percentage Calculator (Increase, Discount & Difference)

Compute $X\%$ of $Y$, percentage $X$ is of $Y$, percent increase or discount change, and final value.

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arithmetic Free Online

Percentage Calculator

Calculate percentages instantly: find X%, calculate what percent a number is, and percentage variations between two values.

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arithmetic Free Online

Prime Factorization & Primality Test Calculator

Decompose any positive integer into its unique prime factors product and test if the number is prime or composite.

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geometry Free Online

Pythagorean Theorem Calculator (a² + b² = c²)

Solve for any missing side in Pythagorean equation ($a^2 + b^2 = c^2$): find hypotenuse $c$ or leg $a$ or $b$.

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algebra Free Online

Quadratic Formula Calculator

Solve quadratic equations ($ax^2 + bx + c = 0$) for real or complex roots, discriminant ($\Delta$), and parabola vertex.

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number-systems Free Online

Random Number & Raffle Generator

Generate pseudo-random integer or decimal numbers within a configurable Minimum and Maximum range.

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arithmetic Free Online

Ratio & Proportion Calculator (A:B = C:D)

Solve for missing values in equivalent ratios (A:B = C:D), scale ratios, and simplify numerical proportions.

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geometry Free Online

Right Triangle Calculator (SOH-CAH-TOA & Trigonometry)

Solve right triangles given two legs ($a, b$): computes Hypotenuse ($c$), acute Angles ($\alpha, \beta$), and Area.

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arithmetic Free Online

Root Calculator (Square, Cube & Nth Root)

Calculate square root, cube root, and any nth root ( $\sqrt[n]{x}$ ) of real numbers with exact precision.

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arithmetic Free Online

Rounding Calculator (Decimals, Ceil & Floor)

Round any decimal number to specified decimal places, nearest integer, Floor, or Ceil.

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arithmetic Free Online

Scientific Calculator (Trigonometry, Factorial & Constants)

Multi-function scientific calculator: trigonometry ( $\sin, \cos, \tan$ in deg/rad), factorial ( $n!$ ), exponential ( $e^x$ ), and powers.

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number-systems Free Online

Scientific Notation Calculator (a × 10^b & E Notation)

Convert large or small numbers to Scientific Notation ($m \times 10^k$, where $1 \le |m| < 10$) and Engineering E Notation.

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algebra Free Online

Slope & Line Equation Calculator

Calculate slope $m$, inclination angle $\theta$, distance between 2 points, and slope-intercept equation ($y = mx + b$).

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geometry Free Online

Surface Area Calculator for 3D Solids

Compute total surface area ($A_{sup}$) for Spheres ($A = 4\pi r^2$), Cylinders ($A = 2\pi r h + 2\pi r^2$), and Cubes ($A = 6a^2$).

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geometry Free Online

General Triangle Calculator (Heron's Formula, Law of Sines & Cosines)

Calculate Area (Heron's Formula), Perimeter, and Semi-perimeter for any triangle given 3 side lengths ($a, b, c$).

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geometry Free Online

3D Volume Calculator (Sphere, Cylinder, Cone & Cube)

Compute 3D volume ($V$) for primary geometric solids: Sphere ($V = \frac{4}{3}\pi r^3$), Cylinder ($V = \pi r^2 h$), Cone ($V = \frac{1}{3}\pi r^2 h$), and Cube ($V = a^3$).

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