Of course, bitmover and I are referring to having a unit converter within this particular tool so that all of the fiat (currently dollar value) references would be for the selected local currency, because if you merely want a contemporary conversion of your currency, you could just look at
bitmover's currency converter - and maybe in that regard, as an interim solution, maybe we just want to start by adding such unit conversion link in the thread (even though there is already a unit converter link at the top of the thread).
As to your other point regarding how much value to hold in your local currency, versus the dollar versus bitcoin, I think that it is becoming more and more widely known that there are so many folks who do hold/reference dollars rather than their local currency, even if they might not hold dollars, but then they also have a lot of preferences of holding dollars because historically it has had a tendency to appreciate (or at least hold its value better) against the local currencies.. and not as many folks realize that bitcoin is even better than the dollar because bitcoin's short-term volatility frequently clouds thinking, including that it does not even take that much of a zoom out before anyone should be able to see the magnitude of such bitcoin value holding... so yeah, then it comes down to how much of your local cash and/or dollars do you need to hold and then the rest should probably go into bitcoin.. for holding 4-10 years or longer.... which can seem like an eternity for so many folks to think in terms of holding some kind of asset/currency for 4-10 years or longer in order to have decent chances of increasing the quantity and quality of options that they have in their life a wee bit down the road.
I discovered an api with data from 2013 basically all currencies.
I will take a look. I will probably add support for other local currencies using this api.
Data fromm 2010 to 2013 may be supported only for usd. I will see if I can get euro too