Currency guides
Short, practical guides for converting money when you travel: with no signal, at the till, at a card terminal, when the bill comes and when you have nothing but pen and paper.

Updated

How to convert currency without internet
Save exchange rates before you lose signal, then convert in airplane mode or with roaming off. Steps for iPhone and Android, plus what to do if you forgot.

How to use a currency converter app when you travel
Set up a currency converter before your trip, check prices at the till, spot poor exchange offers at terminals and counters, and keep a record of spending.

How to convert currency manually
Multiply by the rate to convert one way, divide to go back. The currency conversion formula with worked examples, mental shortcuts and how to read a rate.

How to split a bill in a foreign currency
Add the tip, divide by the number of people and see each share in your own currency. A quick method for restaurant bills, rentals and taxis abroad.

How to calculate a tip in a foreign currency
Work out a tip in the local currency, see what it costs you at home and check whether service is already included. A quick method and a % key shortcut.

What makes a good offline currency converter app
Six checks for picking an offline currency converter for iPhone or Android: real offline mode, rate age, currency list, calculator, ads and price.