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HTML Special Character Chart: Math Symbols

Most standard keyboard characters are widely supported by web browsers, but characters for math formulae may require one of the special character codes.

Symbols and Characters (Added in HTML 3.2)*
Character No. Code Name Code
± plus or minus ± ±
¼ fraction one-fourth ¼ ¼
½ fraction one-half ½ ½
¾ fraction three-fourths ¾ ¾
Other Commonly-Supported Characters
+ plus sign +  
< less than &#60; &lt;
= equals &#61;  
> greater than &#62; &gt;
× multiplication &#215; &times;
÷ division &#247; &divide;
 
Supplementary Characters**
Character No. Code Name Code
√ radical &#8730; &radic;
∞ infinity &#8734; &infin;
∫ integral &#8747; &int;
∂ partial differential &#8706; &part;
≠ not equal &#8800; &ne;
≤ less than or equal to &#8804; &le;
≥ greater than or equal to &#8805; &ge;
∑ summation &#931; &sum;

*Fractions are not supported by earlier Mac browsers because of variations in the Mac coding system.

**These characters and many others such as pi (&pi;) are from supplementary character sets and have not been fully incorporated into HTML character sets supported by browsers.
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