How to count the number of tweets for a specific hashtag?

For counting the number of tweets for a specific hashtag you should use social media monitoring tool.

Brand24 works great with twitter (and also other social media channels, articles, blogs, websites etc.) by giving you instant access to mentions across the web. 

You will need to set up a monitoring project with the hashtag as a monitored keyword and everything you need will appear in the dashboard, like this:

On the Analysis page, you will find more specialist analyses of influence, reach, sentiment, sources, authors etc.

It is all easy to use and understand, all in one place, and all interactive, which means you can easily join the conversation and engage.

Start a free trial and start monitoring and counting hashtags!