French Phrase
Mon numéro, c'est 555-5678.
Meaning
This sentence means “My number is 555‑5678.” It is a straightforward way to give someone your telephone number in French.
When to use
Use this phrase when you are exchanging contact information, such as after meeting a new friend, a business contact, or during a phone‑number‑exchange exercise in a language class.
✦Grammar Breakdown
Monnuméro,c'est555-5678.
Possessive adjective
"Mon" means "my" and agrees in gender and number with the noun it modifies (here, masculine singular "numéro").
Noun "numéro"
"Numéro" is a masculine noun meaning "number"; when referring to a phone number, it is often preceded by "de téléphone" for clarity.
c'est
"c'est" is the contraction of "ce" + "est" and is used to identify or define something, similar to English "it is".
Pronouncing digits
In French, phone numbers are usually spoken in pairs (e.g., 55 55 56 78 → "cinq cinq, cinq cinq, cinq six, soixante‑dix‑huit").
🗨In Conversation
Quel est ton numéro de téléphone ?
What’s your phone number?
Mon numéro, c'est 555-5678.
My number is 555‑5678.
✕Common Mistakes
Mon numéro, c’est le 555-5678.
The article "le" is unnecessary; you should say "c’est 555‑5678" not "c’est le 555‑5678".
Mon numéro est 555-5678.
While grammatically correct, native speakers usually prefer the identification form "c’est" in casual conversation.
Mon numéro, c’est le numéro 555-5678.
Repeating "numéro" is redundant and sounds unnatural.
↔Alternatives
Voici mon numéro : 555-5678.
Here’s my number: 555‑5678.
Je te donne mon numéro, c’est le 555-5678.
I’m giving you my number, it’s 555‑5678.
Mon numéro de téléphone, c’est 555-5678.
My phone number is 555‑5678.
Cultural Tip
In French‑speaking countries phone numbers are spoken in pairs of two digits, and the leading zero of the national format is dropped when you add the country code (+33). For example, 06 12 34 56 78 becomes +33 6 12 34 56 78. It’s polite to ask “Puis‑je prendre votre numéro ?” before giving yours.

