Free Online Calculators

Free Online Calculator

• Basic Free Online Calculator Service

  Free basic online calculator. Add, subtract, multiply, and divide with ease. Simple and fast.

• Engineering Calculator

  Free online engineering calculator with sin, cos, tan, log, ln, powers, roots, factorials, memory and more. Supports DEG/RAD mode.

• Online Square Root Calculator

  Calculate the square root of any number instantly. Free online square root (√) calculator.

• Square Calculator (x², x³, xⁿ)

  Calculate squares (x²), cubes (x³), and any power (xⁿ). Includes a perfect squares table from 1 to 20. Free online square calculator.

• Factorial Calculator (n!)

  Calculate factorial (n!) instantly. Includes a factorial table from 0! to 20!. Free online factorial calculator.

• Fibonacci Sequence Calculator

  Find the nth Fibonacci number or list the Fibonacci sequence. Free online Fibonacci sequence calculator.

• Area Calculator

  Calculate the area of circles, rectangles, triangles, trapezoids, and parallelograms. Free online area calculator with formulas.

• Volume Calculator

  Calculate the volume of cubes, cuboids, spheres, cylinders, and cones. Free online volume calculator with formulas.

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