Sending a fax to another country requires more than entering a number and pressing Send. This guide covers everything: country codes, number formats, regional costs, compliance rules, and step-by-step instructions for any destination in 2026.
Frequently Asked Questions
How do I format an international fax number?
Use the format +[country code][area code without leading zero][local number]. For example, London's local number 020 7946 0958 becomes +44 20 7946 0958 — the leading zero is dropped. Online services like [mFax.to](https://mfax.to) accept the + prefix directly and validate the format before you send.
What country codes do I need for international faxing?
The most common international fax country codes are: US/Canada (+1), UK (+44), Germany (+49), France (+33), Japan (+81), Australia (+61), and Mexico (+52). For a complete list of 200+ countries, see our [fax country codes guide](/blog/fax-country-codes/).
How much does it cost to send an international fax?
Traditional fax machines use international phone call rates — typically $2–$15 per minute, making a 5-page fax $15–$50. Online fax services charge $0.05–$1.00 per page to most countries. See our [international fax rates guide](/blog/international-fax-rates/) for a full country-by-country breakdown.
Can I send an international fax from my phone?
Yes. The mFax app lets you send faxes to any country from an iPhone or Android. Upload a PDF, enter the international number in +[country code][local] format, and tap Send. Delivery takes 1–3 minutes and you receive a confirmation.
What paper size should I use for international faxes?
Europe, Asia, and Australia use A4 paper (210×297 mm). The US and Canada use Letter size (8.5×11"). If you're faxing to Europe or Asia, format your document in A4 to prevent content from being cut off or rescaled at the receiving end.