Scientific Calculator / Symbol input guide
Symbol input guide
Some symbols are built into the scientific calculator here, while others such as ∫ or Σ still need to be inserted through your operating system, input method, or plain copy-and-paste.
This page separates those two cases so you can tell quickly whether to stay inside the calculator UI or open a symbol picker outside the site.
Symbols available directly in this site
These symbols already exist in the scientific calculator UI.
Square root
Used for roots and square-root calculations.
Use the `√` button in the scientific calculator function row. It is the built-in way to enter root expressions here.
Use √ in the calculatorCopy this symbol
√
Pi
Used for trig work, circles, and formulas built around pi.
Use the `π` constant button in the scientific calculator. You can combine it directly with Ans, powers, and operators.
Use π in the calculatorCopy this symbol
π
Symbols you need to find outside the site
These symbols do not have dedicated buttons here yet, so the practical path is OS or IME input plus copy when needed.
Integral sign
Used in calculus notes and handwritten-style expression drafts.
The current scientific calculator does not expose an `∫` button. Use a system symbol picker or copy it when you need the character itself.
macOS
Open the Character Viewer with `Control + Command + Space`, then search for `integral`.
Windows
Try `Win + .` for the symbols panel, or use Character Map if the symbol is easier to find there.
Mobile / IME
Look in the symbol keyboard, character palette, or IME search for `integral`. If that fails, copy-and-paste is the fastest fallback.
Copy and paste
Copy `∫` and paste it into your note, editor, or document.
Copy this symbol
∫
Sigma / summation
Used for summation notation and compact series formulas.
There is no dedicated summation button in the current calculator UI.
macOS
Search `sigma` or `summation` in the Character Viewer.
Windows
Use the symbols panel or Character Map to locate Sigma.
Mobile / IME
Try the Greek-letter or math-symbol section, or search for `sigma` in your IME if supported.
Copy and paste
Copy `Σ` if that is faster than hunting for the picker.
Copy this symbol
Σ
Theta
Often used as an angle variable or generic math symbol.
The calculator supports degree/radian modes, but not direct theta-character insertion.
macOS
Search `theta` in the Character Viewer.
Windows
Search the symbols panel or Character Map for theta.
Mobile / IME
Try the Greek-letter section or IME search for `theta`.
Copy and paste
Copy `θ` when you only need the symbol quickly.
Copy this symbol
θ
Infinity
Used in limits, asymptotes, and notation for unbounded values.
The current calculator has no dedicated infinity symbol key.
macOS
Search `infinity` in the Character Viewer.
Windows
Use the symbols panel or Character Map and search for infinity.
Mobile / IME
Check the symbol keyboard or IME search for `infinity` or `無限大` if your IME supports it.
Copy and paste
Copy `∞` when you just need the character.
Copy this symbol
∞
Degree sign
Used in angle and temperature notation.
The calculator lets you switch angle mode with `Deg`, but it does not expose the `°` character as a key.
macOS
Search `degree` in the Character Viewer.
Windows
Find the degree sign from the symbols panel or Character Map.
Mobile / IME
It is often on the symbol keyboard near other punctuation. If not, use IME search or copy it.
Copy and paste
Copy `°` when you need the symbol quickly.
Copy this symbol
°
Practical note
Symbol pickers differ by device and input method. When in doubt, open the system character viewer first, search by the symbol name, and use copy as the fallback path.
Back to the scientific calculator
Once you know where the symbol lives, return to the calculator and keep building the expression.
Back to the scientific calculator