Free Online Calculators: Basic, Math, Physics, Chemistry Calculators
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What is a Calculator?

A calculator is an electronic device that is used to do mathematical calculations. It performs arithmetic operations on numbers. Basic calculators can perform mathematical calculations such as addition, subtraction, multiplication, and division.

Calculators usually include an 8-to-12-digit display. There are also physical keys where students can manually enter the desired digit. Basic calculators usually run on batteries.

Why do we use Calculators?

To fast forward the calculation process and avoid errors is one of the basic reasons. Calculations can be stressful sometimes, and the calculator makes it reposeful for everyone. Calculators are simple and efficient devices for parents and students to solve complex operations. It is an essential tool for students.

The calculator allows students to save time from doing manual calculations. While using a calculator, students can do extensive calculations with accurate results in a short time.

Types of calculators

There are many types of calculators by which students can make the calculations easier. Here are some calculators which can be used to make calculations easier.

  1. Basic Calculators
  2. Math Calculators
  3. Physics Calculators
  4. Chemistry Calculators
List of Calculators
School Age Calculator Child Education Calculator
Marks Percentage Calculator Percentage Calculator
Multiplication Calculator Division Calculator
Addition Calculator Square Root Calculator
Basic Calculator Discount Calculator
Mass Calculator Power Calculator
Wavelength Calculator
Compound Interest Calculator


The calculator was invented by Blaise Pascal. He invented the mechanical calculator in 1642. Additionally, he was a French mathematician, physicist, inventor, philosopher, writer, and Catholic theologian.

Calculators combine inputs using electronic components called logic gates. A logic gate acts as a barrier in an electronic circuit; it takes in two electric currents, compares them, and sends out a new current based on what it finds.

In 1642, the invention of the mechanical calculator was first made by Blaise Pascal. It is known as Pascal’s calculator.

Basic calculators are used to handle smaller values, though the scientific calculator can take large quantities of numbers. It is helpful to calculate negative scientific notation.