You can just copy and paste the different approximately symbols below. I have gathered different symbols you cn copy and use.
Unicode value: 8776
If you’re using HTML, you can just type in (≈) and it will display the character. If you’re posting in a forum, it will depend if it’s smart enough to interpret that or not.
Otherwise, just copy and past.
Typically when typing you can use Tilde (~) as the approx. symbol. It’s in the upper left hand corner and you need to use shift to get it.
You can also use Microsoft Word -> Menu -> Insert -> Symbols. They have a version of the approximate symbol on the chart.
The two squiggly lines is one of at least five symbols used for”approximately equal” in mathematics 😀
Symbols used to denote items that are approximately equal are wavy equals signs.
≈ (Unicode 2248)
≃ (Unicode 2243)– used to indicate asymptotically equal to
≅ (Unicode 2245) – used to indicate isomorphism or congruence
~ (Unicode 007E) – used to indicate proportionality
≒ (Unicode 2252) – in Japanese and Korean, this is commonly used.