**Introduction**

A calculator is a device or tool that performs complex calculations at a much faster pace and accuracy than an average human brain. We use various kinds of indexes and statistics to perform comparative analysis and study trends based on which many important decisions are made. From scientific calculations to arithmetic calculations, from commercial calculations to tax returns, calculator is used everywhere, and probably no sphere of our lives is untouched by the scope of calculator.

Calculator not only saves our time but also saves us from performing rigorous calculations by hand and remembering complicated formulae to perform those calculations. By employing web-based calculator we can automate our processes. The use of electronic calculator is so pervasive that it is hard to believe that they didn’t become commonplace until the last few decades of the 20th century.

People used primary tools such as abacus to do computations before the invention of the modern calculator and since then calculator has been diversified and now we have different types of calculators to perform different tasks.

“To err is being human,” they say,

but making errors in crucial calculations can jeopardize huge opportunities. That is why calculator have occupied important places in schools, universities, industries, scientific research, health management, the commercial sector, etc.

Engineers and software developers continue to make advancements in calculator technology. In the coming times, we may see the lines between classic calculators and personal computers becoming a blur.

Different calculators require different variables or parameters to be processed to achieve the desired calculation. From calculating the EMI on your loan to calculating your body mass index or fat percentage in your body, calculator have become a significant part of our lives.

These days, online calculators have gained space and acceptance in many industries because of their large number of practical applications.

** Here are Some Common Types of Calculators that You Might find Online:**

**BMI Calculator**

BMI Calculator scan is used to measure the body fat based on height, weight, and gender of the individual. You just need to enter your height and weight and select “Compute BMI” and your BMI or Body Mass Index would be reflected on the screen can be used to measure body fat based on height, weight, and gender of the individual. You just need to enter your height and weight and select “Compute BMI” and your BMI or Body Mass Index would be reflected on the screen

**EMI Calculator**

EMI Calculator are used to calculating the EMI or Equated Monthly Instalments of various types of loans and mortgages. The EMI calculators use three variables for EMI computations; they are the principal loan amount, rate of interest, and the tenure or duration for which the loan is to be taken.

**Conversion Calculator**

Conversion Calculators are used for diverse purposes. From measuring volume and length to currency exchanges or changing standards of measurement such as converting kilos to pounds, inches to centimeters, etc.

**Carbon Footprint Calculator**

Carbon Footprint Calculator calculate your impact on the environment.

**Brokerage Calculator **

Brokerage Calculator is used to calculating the brokerage charged by the stockbrokers per transaction. A brokerage calculator helps you compare brokerage charges for currency, commodities, options, equity futures, intraday, and carry forward transactions. The calculator also tells the other charges imposed by the broker such as state-wise stamp duty, transaction charges, Good and Service Tax (GST), Securities Transaction Tax (STT), etc. The brokerage calculator requires you to enter the number of shares sold or bought, the selling price or buy price, and trading frequency (daily, weekly, monthly, or yearly).

**Margin Calculator**

** **Margin Calculator is the difference between the selling price of a product/service and the cost of its production. Margin calculator is an online tool that helps you calculate the exposure provided by the stockbroker for different segments like Delivery, Intraday, Currency, F&O, and Commodity. With the help of a margin calculator, you can calculate the total amount of additional shares that can be bought with the additional leverage provided by the stockbroker.

**Conclusion**

The online calculator uses the same principles as your physical calculator, but the way they present information is highly informative and easy-to-interpret as they have access to massive databases of related information. Most of the calculator use sliders that are used to change variables and get different outcomes based on that. Mostly, an online calculator is free to use and provide exact results with zero inaccuracy.