USD Purchasing Power in Real Time Since 2000

https://onedollar.today/

USD Purchasing Power

I question the accuracy. In 2010 I could buy a McDonald's double cheeseburger for $1. Now they're like $3 and they took off a slice of cheese.

Yeah, same here. Perhaps the Big Mac Index [0] is what you want.

[0] https://en.wikipedia.org/wiki/Big_Mac_Index

Big Mac Index - Wikipedia