About This Scientific Calculator
This free online scientific calculator supports basic arithmetic along with trigonometric functions (sin, cos, tan), logarithms (log base 10, natural log), square roots, powers, and constants like π and e.
Switch between DEG and RAD mode for trigonometric functions depending on whether you're working in degrees or radians.
How Does This Calculator Work?
Choose Your Mode
Select DEG or RAD for trigonometric functions.
Build Your Expression
Tap numbers, operators, and functions to build your calculation.
Get Your Result
Press "=" to instantly see the answer.
Frequently Asked Questions
DEG mode treats angle inputs for sin, cos, and tan as degrees. RAD mode treats them as radians. Choose the mode that matches what your problem uses.
Yes. Multiplication and division are evaluated before addition and subtraction, and parentheses can be used to control order explicitly.
Yes. The calculator can be used online without creating an account.