Basic Calculator

Perform basic arithmetic on two numbers with a chosen operation. Enter your own values below to see result and check the method behind it.

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Your inputs

Change the example values to match your situation.

Use +, −, *, /, ^, %, parentheses; scientific functions: sqrt, sin, cos, tan, log (base 10), ln, abs, exp, floor and ceil. Constants: pi and e.

Your result

Let’s work it out.

Fill in your inputs and select Calculate.
Your result and breakdown will appear here.

How this calculator works

Parentheses and exponentiation are evaluated before multiplication/division, then addition/subtraction. % divides its preceding value by 100.

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What is Basic Calculator?

Basic Calculator helps you perform basic arithmetic on two numbers with a chosen operation.

The main result is result. The formula, example and assumptions below explain how to interpret it.

How to use Basic Calculator

Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.

  1. Gather expression and trigonometric angles. Use values from the same situation or reporting period.
  2. Replace the example expression with your own value, then complete the other fields. Check the displayed units and each selected option.
  3. Select Calculate and read result. Change one input and calculate again to compare a second scenario. Reset restores the original example.
  • Enter expression in the format shown by the example. Keep the same separators and row structure. Use +, −, *, /, ^, %, parentheses; scientific functions: sqrt, sin, cos, tan, log (base 10), ln, abs, exp, floor and ceil. Constants: pi and e.
  • Choose trigonometric angles from Degrees and Radians.

Basic Calculator: a worked example

With the inputs below, the result is 2,360 (result). Follow the example, then replace these illustrative values with your own.

Example inputs and output
Input or outputExample value
Expression(1200 + 800) * 1.18
Trigonometric anglesDegrees
Result2,360

Understanding the Basic result

The main output is result. It applies to the inputs and operation you selected.

Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.

Basic Calculator: assumptions and common mistakes

A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.

  • Check the base value, sample definition and chosen operation. Display rounding should come after the calculation.

For wider guidance, visit NIST statistical handbook. The formula and scope of this specific tool are stated on this page.

Basic Calculator FAQs

What does Basic Calculator calculate?

Basic Calculator helps you perform basic arithmetic on two numbers with a chosen operation. Its main output is result.

What inputs do I need for Basic Calculator?

You need expression and trigonometric angles. Use +, −, *, /, ^, %, parentheses; scientific functions: sqrt, sin, cos, tan, log (base 10), ln, abs, exp, floor and ceil. Constants: pi and e.

Which formula does Basic Calculator use?

Parentheses and exponentiation are evaluated before multiplication/division, then addition/subtraction. % divides its preceding value by 100.

What is a worked example for Basic Calculator?

Example inputs: Expression: (1200 + 800) * 1.18; Trigonometric angles: Degrees. The result is 2,360 (result).

How should I enter expression?

Enter expression in the format shown by the example. Keep the same separators and row structure. Use +, −, *, /, ^, %, parentheses; scientific functions: sqrt, sin, cos, tan, log (base 10), ln, abs, exp, floor and ceil. Constants: pi and e.

How do I choose trigonometric angles?

Choose trigonometric angles from Degrees and Radians. The example uses Degrees; replace it if your circumstances differ.

How should I read result?

The main output is result. It applies to the inputs and operation you selected.

Why might my Basic Calculator result differ from my records?

Check the base value, sample definition and chosen operation. Display rounding should come after the calculation. Differences in entered values, units or rounding can also change the comparison.

Can I compare two scenarios in Basic Calculator?

Yes. Note your first result, change expression or another input, and select Calculate again. Editing a field clears the old result so it is not mistaken for a new calculation.

Is Basic Calculator free, and where are my inputs calculated?

This calculator is free to use without signing in. Its formula runs in your browser; calculator inputs are not sent to a calculation API. The inputs reset to the example values when you reset the form or start a fresh page.