The bikeshed calculator shows you how much money you cost the company by bikeshedding a particular discussion or by having a meeting that didn't produce anything useful.
https://infinitewarp.com/bikeshed/
Calculations assume that your gross annual salaries pay for the US average of 40 hours/week for 46.3 weeks/year. The full 52-week year is reduced by 5.7 because the average worker gets 1.7 weeks of holidays, 2 weeks of vacation, and 2 weeks of sick leave. (source)
If "include additional overhead costs" is enabled, the cost calculation includes: 6.2% on the first $113,700/person for Social Security, 1.45% for Medicare, 2.8% on the first $16,488/person for unemployment insurance, 2.5% for 401(k) matching, and $10,119/person for healthcare. (source)
The default salary ($107,100) is the mean of the US average salaries for Software Engineer, Software QA Engineer, Senior Software Engineer, Senior Software QA Engineer, and Software Engineer Manager in 2017 according to Glassdoor.com.