How to Use

C : Clears the entire display.
DEL : Deletes the last character entered.
( ) : Use for order of operations.
÷ × - + : Standard arithmetic operators.
^ : Power (e.g., 2^3 is 2 raised to the power of 3). Use ** internally.
√ : Square root (e.g., √(9)). Remember the closing parenthesis ).
sin cos tan : Trigonometric functions (input in degrees). Remember the closing parenthesis ).
log : Base-10 logarithm. Remember the closing parenthesis ).
ln : Natural logarithm. Remember the closing parenthesis ).
π : Pi constant (approx. 3.14159).
e : Euler's number constant (approx. 2.71828).
! : Factorial (e.g., 5!). Calculates factorial of the number immediately preceding it. Works best at the end of a number or expression part.
= : Calculates the result of the expression.

SolvProb — Custom Website & App Engineering

Advanced Calculator

Evaluate everyday and scientific-style expressions with trigonometry, logarithms, powers, roots, constants, and factorials.

What this tool does

This browser calculator evaluates arithmetic expressions using a button-based keypad. It includes parentheses, sine/cosine/tangent, base-10 and natural logarithms, square root, powers, π, e, and factorial.

Who this is for

Students practicing arithmetic and common scientific functions
Anyone needing a quick browser calculator for one-off expressions
Developers testing a compact keypad-based expression interface

How to use this tool

Enter numbers and operators with the keypad.
Use parentheses to group expressions and choose a function such as sin, log, ln, or √.
Use π or e as constants, ^ for powers, and ! for factorial.
Close all parentheses, then press = to calculate.
Use C to clear or DEL to remove the last entry.

Inputs

Inputs are button-generated numeric expressions with +, −, ×, ÷, parentheses, trigonometric functions, logarithms, square root, powers, π, e, and factorial. Trigonometric input is intended to use degrees.

Outputs

The result appears in the calculator display and finite results are rounded to up to 10 decimal places. Invalid expressions or non-finite results show an error or Infinity state. There is no export or calculation history.

Example use cases

Evaluate a percentage-free arithmetic expression or power
Check a degree-based trigonometric value
Explore roots, logarithms, and small integer factorials

Related SolvProb tools

Frequently asked questions

Are trigonometric functions in degrees?

Yes, the interface describes sin, cos, and tan as degree-based functions. Complex or nested expressions may require careful parentheses.

What are the factorial limits?

Factorial is intended for nonnegative integers. Very large values overflow to Infinity, and the interface is not a symbolic algebra system.

Does the calculator save history or support keyboard input?

No. It provides a keypad display without calculation history, variables, memory, unit conversion, graphing, export, or documented keyboard entry.

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