Scientific Calculator

Use our scientific calculator for free and calculate your business expenses and revenue.


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How to Use a Scientific Calculator

If you’ve ever held a calculator in your hand (or used the one above), you’ll know your way around. The process is straightforward as you need to input numbers and select which operations you want to do with your input. Most commonly, you first enter the number and then choose a function.

All you need to know is what each button represents. Most of them are self-explanatory (like a plus sign), but we’ll go over some that may be confusing:

  • MC: Clears the calculator’s memory
  • M+: Adds the number on the display to the memory
  • M-: Subtracts the number on the display to the memory
  • MR: Recalls the memorized number
  • AC: Stands for “all clear” and resets all functions
  • 2nd: Assigns other functions to buttons. Think of it as a shift on your keyboard
  • x!: Calculates the factorial of the number you’ve inserted
  • Rad: Calculates in radian
  • Rand: Returns a random decimal number between 0 and 1
  • EE: Stands for “enter exponent.” It adds the “x10^” phrase to your display.
  • Ln: Calculates the natural logarithm function
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Frequently Asked Questions (FAQ)

As always, Google is your friend. When you search for a “free online scientific calculator,” the platform will come up with about 90 million results, including the on-page one from Google itself. As you can see, we’ve also decided to put our scientific calculator online that businesses can use for free. So, if you need help calculating your payroll, taxes, or credit rates, you’re at the right spot.

You can find many free calculators online. If you want to buy a physical scientific calculator, the price depends on the brand and the number of features it comes with. They range from $7 to $300.

You can use the iPhone's calculator app that comes pre-installed with the device. All you need to do is flip your iPhone and activate landscape mode. When you do this, buttons for scientific operations will show up.

The resetting process depends on the model. For example, with Casio calculators, you need to press the shift and CLR buttons. After that, press the digit 3 to clear everything. On TI devices, you need to press the second function button and then the plus key. Pressing the digit 7 will let you reset your calculator.

It’s a normal calculator that can do more complex math operations. A scientific calculator sounds like a complicated apparatus that people in white coats use when they flap around the lab. But it’s not that scary!

While a regular calculator offers simple calculations, such as addition, subtraction, multiplication, division, and square root, a scientific calculator expands to many other functionalities (trigonometry, E and PI calculation, scientific notation, statistics...).

Another difference is that the scientific calculator obeys the rules of operations. For example, if you want to find out to calculate 2+2*3, a regular calculator will say it’s 12. A scientific calculator will return the correct answer, which is 8.

In the dark olden times (i.e., before the internet), you’d have to buy one of these bad boys and carry them around with you at all times — or just times you need it. Today, you can find hundreds of scientific calculators online that are similar to this one.

As the name suggests, a graphing calculator is a type of a scientific calc that comes with a high-resolution screen that can graph functions and plot coordinates. In other words, you’ll have a graphical representation of a function using the X and Y axes.

In most cases, a graphing calculator is not necessary for business-related operations.

You can also obtain a financial calculator that focuses on functions such as interest rates, cash flow, cost-sell margins, and so on.

A scientific notation is a way of writing numbers that are too big or too small to be written down conveniently. For instance, let’s say the Christmas period has treated you nicely, and you’ve raked in a duodecillion dollars. That number contains 39 zeros, and instead of writing them all out, you’d use a scientific notation of 10^39.

To do scientific notation on the calculator, you need to press the EE button. Note that you need some input already on the display.

Fractions are represented by the “x/y” button. Therefore, you first need to input the numerator, press the fraction button, and then add the denominator.

A sin is a function that’s equal to the ratio of the side opposite the angle you’re calculating for. So, calculating a sin is easy; we don’t know why’d you even ask this.

Joking aside, you don’t need to know any formulas with our calculator at hand. All you need to do is press the sin button and add the degree of the angle you’re interested in. The sinh button calculates the hyperbolic sine function.

Online calculators can get specific and offer only a certain set of functions. Which one you pick depends on your needs, i.e., if it contains all the functions you want to carry out.

Our free online scientific calculator covers all the functions necessary for a business and comes with a simple design that won’t get you confused.

Most used calculators are, obviously, physical ones. Models’ popularity depends on the buyers’ demographics and availability. Still, the most popular calculators have proven to be:

- Casio FX-115ES

- Texas Instruments TI-84 Plus

- Texas Instruments TI-30X IIS

- HP 50g

- Casio FX-9750GII

- HP-12C

- Sharp EL-W531

- Canon F-792SGA