Using the Basic Calculator
Enter the whole expression rather than calculating each piece separately and rounding along the way. For example, adding two costs before multiplying by a quantity is different from multiplying only the second cost.
Worked example
Use the example inputs below to reproduce this result. These are the form's starting values, not recommended targets. Changing your inputs updates your result above; this worked example stays fixed for comparison. Results are rounded for display.
Example inputs
- Expression
- (12 + 8) * 3
Example result
- Result
- 60
Method and assumptions
Order of operations: parentheses, powers, multiplication/division, addition/subtraction. Scientific functions: sin, cos, tan (radians), sqrt, abs, ln, log, exp; constants pi and e. Use * for multiplication.
Make the intended order explicit
Parentheses are the clearest way to show which operation should happen first. Enter multiplication explicitly where the parser requires it, and check the function names supported by the tool. When comparing with a handwritten expression, pay special attention to negative signs, exponentiation and angle units because they can change the meaning of an otherwise familiar calculation.
Common question
Why does 2 + 3 × 4 not equal 20?
Multiplication is evaluated before addition, giving 14. To add 2 and 3 first, enter (2 + 3) * 4, which gives 20.
Guide updated .