5 Rules for Pronouncing the Spanish B and V (They’re Actually One Sound)

Here’s the sentence that stops most English speakers in their tracks: in Spanish, the letters B and V represent the exact same sound. Not a similar sound — the same one. Spanish speakers aren’t softening a V into a B when they talk; there is no V sound to soften from in the first place. Once that clicks, Spanish pronunciation gets noticeably easier. Here are the five rules that explain exactly what’s going on and how to produce the sound yourself.

1. Forget everything English taught you about B and V

In English, B and V are genuinely different sounds: B is made by pressing your lips fully together, V is made by touching your top teeth to your bottom lip and letting air buzz through. Spanish only ever uses the lips-together family of sounds for both letters. There is no tooth-on-lip V in Spanish at all — so vaca (cow) does not start like the English word “van.” It starts like “bah.”

This merger has a name — linguists call it betacism — and it happened across most of the Western Romance languages, with Spanish taking it the furthest. So when a Spanish speaker tells you B and V sound the same, they’re not simplifying for your benefit. That’s genuinely how the language works.

2. Use the hard [b] sound at the start of a word, or right after M or N

Even though B and V share one sound, that sound actually has two versions, and which one you use depends entirely on position — never on spelling. The first version is the hard, fully-stopped [b], just like the English B in “boy.” You use it in exactly two situations:

• At the very start of a word or a breath group: bien (well), vamos (let’s go)
• Right after M or N: cambiar (to change), enviar (to send), un beso (a kiss)

Notice that “vamos” gets the hard [b] because it’s starting a sentence, while “enviar” gets it because of the N right before the V. The letter on the page genuinely doesn’t matter here.

3. Soften to the gentle [β] sound everywhere else

In every other position — between vowels, after most consonants, mid-sentence — the sound softens into what linguists write as [β]: your lips come close together but don’t fully close, so a little air keeps flowing through, almost like a very soft, lazy B. Try these:

• nube (cloud) — soft between vowels
• cueva (cave) — soft between vowels
• la vida (life) — soft, because it’s not at the start of the breath group anymore

A useful trick: say the English word “boy,” then say it again but stop your lips just a millimetre short of touching. That half-closed position is almost exactly the Spanish [β].