A WhatsApp link turns your phone number into an address people can click. Whoever opens it lands straight in a conversation with you — no writing the number down, no saving you to their contacts, no searching. It is the difference between a phone number printed in an ad, which almost nobody types out, and a link people tap.
This guide covers the three ways to create one, the number format country by country, what to do with the link afterwards, and the mistakes that stop it from opening. Each section links to the specific guide if you want to go deeper.
What a WhatsApp link is
It is a web address that opens WhatsApp with a chat with you already started. The official version comes from WhatsApp itself and is called click to chat: it is not a trick and it does not depend on any third-party app.
It works anywhere a link fits: your website, an Instagram bio, an email signature, an ad, a QR code on the counter. And it behaves the same on a personal account and on WhatsApp Business.
If you have come across the term walink and aren’t sure whether it means the same thing, that is covered in what a walink is and how it differs from wa.me.
Method 1: the wa.me format, by hand
You don’t need any tool. The format is this:
https://wa.me/5215512345678Country code and number, run together, nothing else. It is free and instant. In exchange it has three limits you notice quickly: the link is long and awkward to read out loud, you cannot change the number without changing the link everywhere, and you have no idea how many people open it.
Number format, country by country
This is where almost everything breaks. Three rules, no exceptions: always the country code, digits only — no +, spaces, dashes or brackets — and never the trunk prefix you dial inside the country.
| Country | What it looks like |
|---|---|
| Mexico | 52 + 10 digits. Older links use 521; if yours doesn’t open, try both. |
| Peru | 51 + 9 digits (mobiles start with 9) |
| Colombia | 57 + 10 digits (mobiles start with 3) |
| Argentina | 549 + area code + number, dropping the 15 |
| Spain | 34 + 9 digits |
| United States | 1 + area code + 7 digits |
Mexico and Argentina cause the most trouble, because the number people dictate is not the number WhatsApp expects.
Method 2: a free generator
A generator does three things that are tedious by hand: it validates the format before handing you the link, it lets you write the opening message without fighting text encoding, and it gives you a short address instead of a thirty-character string.
You can create yours free here: pick the country, type the number, add a message if you want, copy the link. No sign-up to try it.
Add the pre-filled message
A link with no message drops the visitor in front of an empty box, and plenty of people don’t know what to write and leave. With a message, the chat opens with the text already there:
https://wa.me/5215512345678?text=Hi,%20I%20would%20like%20more%20infoImportant: the message is a suggestion, it never sends by itself. The person sees it typed out and decides. There are 15 ready-made templates and the encoding details in the pre-filled message guide.
Long link or short link
A wa.me link with a message can run past a hundred characters. That cannot be read out over the phone, it doesn’t sit well on a business card, and it produces a denser QR code that is harder to scan. Your own short link fixes that and, on top of it, can be pointed somewhere else without reprinting anything.
The full comparison, with when each one makes sense, is in wa.me vs a custom short link.
Turn your link into a QR code
The same link, printed. It works on the counter, on the table, in the window, on packaging or on a banner. Whoever scans it lands in the chat without typing anything.
You can generate the QR free, and for where to place it and how to measure scans there is the WhatsApp QR code guide.
Where to put your link
- On your website: as a floating button, which converts best. Step by step for WordPress in how to add a WhatsApp button to WordPress, or the widget if you would rather paste one line of code.
- On social: a bio takes a single link, so if you have several destinations a multilink page is the way.
- In ads and emails: a different link per channel tells you where the messages come from.
- In print: the QR code from the section above.
When one number isn’t enough
If several people answer, a link to a single number becomes the bottleneck. A team link spreads conversations across whoever is available. And if you get a lot of messages with no context, a form first collects the details before the chat opens.
Either way, knowing which link brings results means measuring: link analytics counts clicks by source.
Guides by industry
How to apply all of the above depending on what you do: WhatsApp for restaurants, with orders and a QR on the table, and WhatsApp for real estate, with one link per property.
Common mistakes
- Leaving the + or the spaces in. The link answers “the phone number shared via URL is invalid”.
- Forgetting the country code. It works on your phone, where the number is already saved, and fails on everybody else’s. Always test from a different device.
- Keeping the national 0 or 15 prefix.
- Writing the message with unencoded accents, if you build the link by hand.
- Using the same link everywhere: you lose the cheapest signal you have about which channel works.
Frequently asked questions
Does it cost anything?
No. The wa.me format is free, and so is the generator for creating your link.
Does it work with WhatsApp Business?
Yes, exactly as with a personal account. It is the same kind of number.
Does the person messaging me have to save my number?
No, and you don’t need to save theirs to reply. In fact you can message a number without saving it to your contacts.
Can I change the number later?
Not with a wa.me link: the number lives inside the link, so you have to redo it everywhere it is published. With your own short link you change the destination and everything already printed keeps working.
Summary
- The minimum format is
wa.me/+ country code + number, no symbols. - A pre-filled message lifts replies and never sends on its own.
- A short link can be dictated, printed and redirected; a long one can’t.
- One link per channel is the cheapest way to learn what works.
- If several people answer, the next step is a team link.