1. Enter the expression
Type a valid mathematical expression such as sqrt(25) + 3^2. Use parentheses to group operations and make the intended order clear.
Scientific Calculator
Use this scientific calculator to evaluate expressions with powers, roots, logarithms, trigonometric functions, and constants. Enter an expression with the on-screen keyboard, choose radians or degrees where supported, and calculate the result in your browser.
Enter an expression
Result appears here.
How to use the Scientific Calculator
2. Choose a function key
Select the keyboard tab that matches your expression. Use the main tab for powers, roots, constants, and brackets; choose abc for variables and constants, or func for trigonometric and logarithmic functions. Tap a key to insert it into the expression field.
3. Calculate and verify
Select Calculate to evaluate the expression. Check the displayed result against your expected units and mathematical context.
4. Understand angle units
Trigonometric functions use radians. For example, sin(pi/2) = 1. A 90-degree angle equals π/2 radians.
Worked examples
Square root and power
sqrt(81) + 2^3 = 9 + 8 = 17
First, evaluate sqrt(81) to get 9. Then evaluate 2^3 to get 8. Finally, add 9 + 8 to get 17.
Trigonometry
sin(pi/2) + cos(0) = 1 + 1 = 2
In radians, sin(π/2) = 1 and cos(0) = 1. Add the two values to get 2.
Common scientific functions
Square root
sqrt(25)
Returns 5.
Power
3^4
Returns 81.
Sine
sin(pi/2)
Returns 1.
Natural logarithm
log(e)
Returns 1 in Math.js.
Absolute value
abs(-12)
Returns 12.
Constants
pi, e
Pi and Euler's number.
Mathematical functions and graphing
Use this page for scientific calculations such as powers, roots, logarithms, and trigonometric expressions. To visualize a function, open Graphing Calculator or Function Grapher, enter an expression such as y = x^2, and explore the plotted curve.
Why Use a Scientific Calculator?
Use a scientific calculator when ordinary arithmetic is not enough for a maths exercise, classroom activity, or independent study session. Graphly Math brings common scientific operations together in one accessible interface, so you can enter expressions without memorizing every symbol or switching between separate tools. It is useful for checking homework, exploring how functions behave, and verifying intermediate calculations before writing a solution. The on-screen keyboard helps with powers, roots, brackets, and trigonometric notation on phones as well as computers. Results are intended for educational support; review the expression, angle mode, and mathematical context before relying on an answer in practice.