I started a new project, a bitcoin price calculator that can calculate live and historic Bitcoin prices with euros, dollars and Japanese yen.
WEBSITE:
https://bitcoinpricecalc.com/Interesting website and the domain name is quite good imo.
I made
something similar some months back, but it doesn't have historical data.
I will make a suggestion. I think you could add a chart below your calculator, for the selected currency, as it will show the historical data as well, making it easier to navigate between dates.
Thank you for the suggestion, I added a chart below the calculator.