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  1. Scientific Calculator - Desmos

    A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.

  2. Calculator

    Oct 29, 2025 · Use this basic calculator online for math with addition, subtraction, division and multiplication. The calculator includes functions for square root, percentage, pi, exponents, powers …

  3. Online Calculator

    The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations.

  4. Calculator.net: Free Online Calculators - Math, Fitness, Finance, Science

    Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.

  5. Online Calculator

    Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, …

  6. Online Calculator - English

    Perfect for students, professionals, and everyday users, this online calculator provides accurate results for basic arithmetic, scientific functions, and more. Enjoy the convenience of free, ad-free …

  7. calculator.com®

    Enter a number, then click square root button. Percent button is used to find the percentage of a number. Enter the percentage amount, click the % button, then enter the number you want the …

  8. Math Calculator

    The Math Calculator will evaluate your problem down to a final solution. You can also add, subtraction, multiply, and divide and complete any arithmetic you need.

  9. Free Online Calculator and Converter Tools — Basic Calculator Online

    Your trusted free calculator online for instant calculations. Access scientific calculator, percentage calculator, BMI calculator, currency converter, and 40+ professional tools.

  10. The Online Calculator

    Basic Online Calculator with 10-digit keypad and 4 functions to add, subtract, multiply and divide numbers. Includes basic handheld calculator functions for square, square root, percent, sign change, …