The Mathematical Symbol "Questioned Equal To (≟)"

The ≟ Symbol: Questioned Equal To

The ≟ symbol is not as prevalent as other mathematical symbols, and it typically represents an equality that is questionable or to be determined. This might be seen in contexts where an assertion or assumption is made, but confirmation or proof is pending or uncertain.


The primary purpose of ≟ is to denote a tentative or speculative equivalence. It's particularly useful in settings where one wants to highlight that two quantities or expressions might be equal, but this is either not yet confirmed or is reliant on certain conditions or assumptions.


  • Example 1: In a mathematical proof or exploration, one might posit that \( a \) is ≟ \( b \) based on preliminary calculations or observations. This would indicate that while \( a \) and \( b \) seem to be equal based on the available information, this hasn't been rigorously established.
  • Example 2: In computational or experimental settings, when two algorithms or methods produce results that seem identical, but haven't been thoroughly compared or validated, one might use ≟ to represent this provisional equality.

Since the ≟ symbol is not as commonly used as other mathematical notations, it's crucial to provide context or a specific definition when using it. This ensures clarity and avoids any potential confusion for the reader or audience.

Mathematical symbol 'Questioned Equal To'

Are You Good at Mathematical Symbols?

Do you know, or can you guess, the technical symbols? Well, let's see!
gold cup

gold cup

gold cup

  • This test has questions.
  • A correct answer is worth 5 points.
  • You can get up to 5 bonus points for a speedy answer.
  • Some questions demand more than one answer. You must get every part right.
  • Beware! Wrong answers score 0 points.
  • 🏆 If you beat one of the top 3 scores, you will be invited to apply for the Hall of Fame.
Scoring System

Guru (+)
Hero (+)
Captain (+)
Sergeant (+)
Recruit (+)

Codes for the ≟ Symbol

The Symbol
Alt CodeAlt 8799
HTML Code≟
HTML Entity≟
CSS Code\225F
Hex Code≟

How To Insert the ≟ Symbol

(Method 1) Copy and paste the symbol.

The easiest way to get the ≟ symbol is to copy and paste it into your document.

Bear in mind that this is a UTF-8 encoded character. It must be encoded as UTF-8 at all stages (copying, replacing, editing, pasting), otherwise it will render as random characters or the dreaded �.

(Method 2) Use the "Alt Code."

If you have a keyboard with a numeric pad, you can use this method. Simply hold down the Alt key and type 8799. When you lift the Alt key, the symbol appears. ("Num Lock" must be on.)

(Method 3) Use the HTML Decimal Code (for webpages).

HTML TextOutput
<b>My symbol: &#8799;</b>My symbol: ≟

(Method 4) Use the HTML Entity Code (for webpages).

HTML TextOutput
<b>My symbol: &equest;</b>My symbol: ≟

(Method 5) Use the CSS Code (for webpages).

CSS and HTML TextOutput
span:after {
content: "\225F";}
<span>My symbol:</span>
My symbol: ≟

(Method 6) Use the HTML Hex Code (for webpages and HTML canvas).

HTML TextOutput
<b>My symbol: &#x225F;</b>My symbol: ≟
On the assumption that you already have your canvas and the context set up, use the Hex code in the format 0x225F to place the ≟ symbol on your canvas. For example:
JavaScript Text
const x = "0x"+"E9"
ctx.fillText(String.fromCodePoint(x), 5, 5);

(Method 7) Use the Unicode (for various, e.g. Microsoft Office, JavaScript, Perl).

The Unicode for ≟ is U+225F. The important part is the hexadecimal number after the U+, which is used in various formats. For example, in Microsoft Office applications (e.g. Word, PowerPoint), do the following:
[Hold down Alt]
[Press x]

(The 225F turns into ≟. Note that you can omit any leading zeros.)
In JavaScript, the syntax is \uXXXX. So, our example would be \u225F. (Note that the format is 4 hexadecimal characters.)
JavaScript TextOutput
let str = "\u225F"
document.write("My symbol: " + str)
My symbol: ≟