all wallets that i use have always have that feature  . you can see eth/btc or any supported crypto on your wallet and then you below or beside them you can see a value based on your local currency or based on the currency that you have set on the setting   .

 if not then we can always look the value of our coins on google  . wallets should also show the current value of the cryptos so we should have an edge with that before we send something