Scientific Calculator
A full scientific calculator with trigonometry, logarithms, roots and powers. Toggle between degrees and radians.
Using the scientific calculator
Enter an expression using the keypad — combine numbers, operators, brackets and functions like sin, cos, tan, log, ln and √. Switch DEG/RAD to control how the trigonometric functions interpret angles, then press = to evaluate.
FAQ
Does it use degrees or radians?
Both — use the DEG/RAD button to switch. Trigonometric functions follow the selected mode.
For general calculation use.
Use the result with confidence
Build an expression with explicit operators
Use parentheses to control order and include × between adjacent quantities: write 2×(3+4), not 2(3+4). The calculator evaluates the whole expression when you press equals. Clear removes the expression; backspace removes the last character.
Check angle mode before trigonometry
In DEG mode, sin(30) = 0.5. In RAD mode the input is radians, so the equivalent angle is π/6. The log key is base 10, while ln is the natural logarithm. For example, log(100) = 2 and √(81) = 9.
Percent and numerical limits
The percent sign divides that quantity by 100. It does not use the special “add a percentage of the previous total” behaviour of some pocket calculators: use 200×1.10 for a 10% increase. Results are rounded to about ten decimal places. Division by zero, invalid syntax and real square roots of negative numbers report an error.