Cuento desde cero.

Cuento comes from the verb contar.

In the present tense, contar is a stem-changing verb: the o in the stem changes to ue in most forms.

So you get:

• yo cuento
• tú cuentas
• él/ella cuenta
• nosotros contamos
• ustedes cuentan

That is why it is cuento, not conto.

It can mean either one, because contar has both meanings:

• to count
• to tell or to relate

So cuento can mean:

• I count
• I tell

Context tells you which meaning is intended. In Cuento desde cero, the surrounding meaning will make it clear.

Also, be careful: cuento can also be a noun meaning story or short story. But in this sentence, it is a verb form.

Spanish often leaves out subject pronouns when they are not needed.

Because cuento already tells you the subject is I, Spanish does not need yo here.

So both of these are possible:

• Cuento desde cero.
• Yo cuento desde cero.

The version without yo is usually more natural unless you want emphasis, contrast, or clarity.

Desde is a preposition meaning from, since, or starting at, depending on context.

Cero means zero.

So grammatically, desde cero means from zero or starting from zero.

As a phrase, it is very commonly used to express the idea of:

• beginning with nothing
• starting over completely
• starting from the very beginning

Because desde is the normal preposition for expressing a starting point.

Compare:

• desde cero = from zero / from scratch
• de cero is generally not the standard phrase here

Think of desde as marking where the action begins.

Yes. Cuento is the first-person singular present indicative form of contar.

Depending on context, the Spanish present tense can express different ideas that English often separates:

• I count from zero
• I’m counting from zero
• I do count from zero
• sometimes even a near-future idea in the right context

So the present tense in Spanish is a little broader than the simple present in English.

Yes, it could be, but it is not exactly the same.

• Cuento desde cero = simple present; more neutral, general, or straightforward
• Estoy contando desde cero = present progressive; emphasizes the action as happening right now

So if you want to stress that the counting is in progress at this moment, estoy contando is more specific.

Yes. Desde cero is a very common expression in Spanish and is often used figuratively.

It can mean:

• starting over
• starting from scratch
• building something from nothing
• beginning at the most basic level

Examples:

• Aprendí español desde cero.
  I learned Spanish from scratch.

• Tuvimos que empezar desde cero.
  We had to start over from scratch.

So even though cero literally means zero, the phrase is often broader than just numbers.

Yes. That would also be natural, but it means something slightly different.

• Cuento desde cero focuses on counting or possibly telling, depending on context
• Empiezo desde cero focuses on beginning from scratch
• Comienzo desde cero is similar, a bit more formal or bookish in some contexts

So whether you can replace it depends on what the speaker really means.

A simple pronunciation guide is:

• cuento ≈ KWEN-toh

Notes:

• cuen- has a diphthong: ue
• the stress is on the first syllable: CUEN-to
• the c before u sounds like k

So the full sentence sounds roughly like:

• KWEN-toh DES-deh SEH-roh

Pronunciation varies a little by region, but that is a good Latin American-style approximation.

Yes, it can be, because they are spelled the same.

• un cuento = a story / a short story
• cuento = I count / I tell

But the grammar usually makes the meaning clear.

For example:

• Leo un cuento.
  Here cuento is a noun.

• Cuento desde cero.
  Here cuento is a verb, because it is the main action of the sentence.

Yes, very common.

It is widely understood and used across Latin America in both literal and figurative senses. You will hear it in everyday conversation, education, business, self-help, sports, and many other contexts.

So this is a very useful phrase to learn.