Feature Request: Support for currency conversions

[Razvan Ursan]

Originally reported on Google Code with ID 367

It would be really useful to have a way of converting currency on the fly (with automatic
updates for the currency rates).

Some examples of syntax and possibilities:

* 12 eur to usd
* 12eur to usd
* $100 in euro
* (25 gbp to usd) to euro
* 50 euro * 12 usd + 300


There could also be a setting for the current regional currency, so once the user inputs
a currency value, it will be automatically converted to the user's actual currency.
Eg: let's say the user has a default USD currency, so inputing just "100 euro" and
hitting enter would convert it to USD.

Reported by ursanrazvan on 2010-12-25 00:11:36

[Former user]

Reported by helder.pereira.correia on 2013-03-24 06:42:07 - Labels added: Type-Enhancement

[Pol Welter]

This could easily be incorporated in the upcoming unit system. We'd only need a mechanism to update the exchange rates by querying the internet.

Still, an expression like 50 euro * 12 usd + 300 does not make any sense.

[Helder Correia]

Not very supportive of this. Polling exchange rates from some website whenever there is a network connection seems like an unnecessary burden to me. Surely, we could have an off-by-default option, but still.

[Helder Correia]

Issue #873 was marked as a duplicate of this issue.

[Helder Correia]

Issue #884 was marked as a duplicate of this issue.

[Tomáš Krásný]

I would also very appreciate this feature. Synchronous polling of exchanges is a bad idea but you can always cache the exchange rates on the server and refresh them only in specific intervals (e.g. 15min). I am sure no one would mind this delay.

[Kevin Brubeck Unhammer]

There’s some prior art in Qalculate, which updates weekly or on request ( https://qalculate.github.io/manual/qalculate-units.html ). I’d prefer to stay in the fantastic Speedcrunch rather than open Qalculate for that one thing

[Samuel Falk]

I would love to see this implemented as well.