Scientific Calculator
Online scientific calculator with trigonometric, logarithmic, factorial and other operations, plus degree/radian toggle.
Features
The scientific calculator is a full-featured online tool that supports both basic arithmetic and advanced scientific operations. From everyday simple calculations to complex academic research, it handles them all with ease.
- Basic Operations：Addition, subtraction, multiplication and division
- Trigonometric Functions：sin, cos, tan and their inverses, with degree (DEG) and radian (RAD) mode switching
- Logarithms：Natural log (ln), common log (log), and base-2 log (log₂)
- Powers and Roots：Square, cube, arbitrary powers, square root, cube root
- Factorial：Factorial of natural numbers
- Constants：One-tap entry of π and e
- Calculation History：Automatically saves calculations for review and reuse
How to Use
- Click the number and operator buttons to enter an expression, or use your keyboard
- For scientific functions, enter the function first then the value, e.g. sin(30)
- Click
=or press Enter to calculate - Click
DEG/RADto switch between degree and radian mode (affects trigonometric calculations) - Click the history button to view previous calculations
Usage Instructions
Features
Online scientific calculator supporting basic arithmetic as well as trigonometric, inverse trigonometric, logarithmic, power, root and factorial operations, with built-in π and e constants, degree/radian toggle and calculation history.
Steps
Click buttons or use the keyboard to enter an expression → For scientific functions, click the function first then enter the value (e.g. sin(30)) → Toggle DEG/RAD to switch angle mode → Click = or press Enter to calculate → Click "History" to view and reuse past calculations.
Notes
All calculations run locally in your browser; no data is uploaded. Trigonometric results depend on the DEG/RAD mode — please confirm before use. Factorials above 170 return infinity. Syntax errors display "Error".