How to use this calculator
Tap the scientific keypad or type an expression. Choose degrees or radians for trigonometry; use parentheses after functions. Powers associate from the right. Memory, previous answer, and a ten-entry history stay in this tab only.
- Enter expression, angle mode, result display and review the remaining options.
- Select Calculate or change a value to update the result. Read the result label and units before copying.
- Use Reset to restore the worked starting values.
Formula and method
Real finite results only. log is base 10; ln is the natural logarithm.
Worked example
sqrt(144) + 2^3 = 20.
Questions about scientific calculator
When should I select degrees instead of radians?
Use the angle mode used by your expression. sin(90) is 1 in degrees; sin(pi/2) is 1 in radians. The angle selector affects trigonometric functions, not ordinary arithmetic or logarithms.
What assumptions should I check?
Real finite results only. log is base 10; ln is the natural logarithm.
Are my inputs saved?
Calculations run in your browser. We store only tool IDs for favorites and recent tools. A calculation link contains your inputs only when you explicitly choose to copy one.