If your project is mentioned in Awesome Calculators, I encourage you to include this badge in your README.md file:
Markdown:
[![Mentioned in Awesome Calculators](https://awesome.re/mentioned-badge.svg)](https://github.com/xxczaki/awesome-calculators)
HTML:
<a href='https://github.com/xxczaki/awesome-calculators'><img src='https://awesome.re/mentioned-badge.svg' alt='Mentioned in Awesome Calculators'/></a>
Note, that it's totally optional, but it's a nice way to show that your project has been featured in an Awesome list 🦄