saber + infinitivevspoder + infinitive
/sah-BEHR/
/poh-DEHR/
💡 Quick Rule
Saber = know-how. Poder = can-do.
Think: Saber is for Skills, Poder is for Permission or Possibility.
- In the preterite tense, 'supe' means 'I found out' and 'pude' means 'I managed to/succeeded'.
- In negative questions, '¿No sabes...?' can be a gentle suggestion, similar to 'Don't you know you should...?'
📊 Comparison Table
| Context | saber + infinitive | poder + infinitive | Why? |
|---|---|---|---|
| Swimming | Sé nadar. | No puedo nadar hoy. | Saber for the skill. Poder for the current ability (e.g., the pool is closed or you're sick). |
| Driving | Él sabe conducir. | No puede conducir sin sus gafas. | He has the skill (saber), but a circumstance prevents him from doing it (poder). |
| Speaking a language | ¿Sabes hablar japonés? | No puedo hablar ahora, estoy ocupado. | Saber asks about the knowledge. Poder asks about the immediate possibility to use that skill. |
| Fixing something | Mi papá sabe arreglar el coche. | ¿Puedes arreglar mi coche? | Saber describes a general skill. Poder is a direct request for action or help. |
✅ When to Use "saber + infinitive" / poder + infinitive
saber + infinitive
To know how to do something; to possess a learned skill or knowledge.
/sah-BEHR/
Expressing a learned skill
Sé nadar desde que era niño.
I know how to swim since I was a child.
Talking about factual knowledge of a process
Mi abuela sabe preparar una paella increíble.
My grandmother knows how to prepare an incredible paella.
Asking if someone possesses a skill
¿Sabes hablar francés?
Do you know how to speak French?
poder + infinitive
To be able to do something; to have the physical ability, permission, or opportunity.
/poh-DEHR/
Expressing physical ability or possibility
No puedo levantar esa caja, es muy pesada.
I can't lift that box, it's too heavy.
Asking for or giving permission
¿Puedo usar tu teléfono?
Can I use your phone?
Talking about opportunity or circumstances
No puedo ir a la fiesta porque tengo que estudiar.
I can't go to the party because I have to study.
🔄 Contrast Examples
With "saber + infinitive":
Sé tocar el piano.
I know how to play the piano. (I have the skill.)
With "poder + infinitive":
No puedo tocar el piano ahora, me duele la mano.
I can't play the piano now, my hand hurts.
The Difference: Saber refers to your learned ability. Poder refers to whether you are currently able to perform the action. You can know how to do something but be unable to do it.
With "saber + infinitive":
Ella sabe hacer lasaña.
She knows how to make lasagna. (She has the recipe and skill.)
With "poder + infinitive":
No puede hacer lasaña porque no tiene queso.
She can't make lasagna because she doesn't have any cheese.
The Difference: Having the skill (saber) is different from having the opportunity or resources (poder) to use it.
With "saber + infinitive":
¿Sabes dónde está la estación?
Do you know where the station is? (A question about knowledge.)
With "poder + infinitive":
¿Puedes decirme dónde está la estación?
Can you tell me where the station is? (A request for help.)
The Difference: Saber asks about information. Poder asks for an action. While related, 'poder' is a more direct request for assistance.
🎨 Visual Comparison
Split-screen showing saber (skill/knowledge in the brain) vs poder (physical ability/opportunity).
Saber is what you know in your head; poder is what you can do with your body or in your situation.
⚠️ Common Mistakes
¿Podes hablar español?
¿Sabes hablar español?
To ask if someone has the learned skill of speaking a language, use 'saber'. '¿Puedes hablar español?' would mean 'Are you physically able to speak Spanish right now?'
No sé ir a la cena esta noche.
No puedo ir a la cena esta noche.
Use 'poder' to say you are unable to attend something due to other plans or circumstances. 'No sé ir' would mean 'I don't know how to get there'.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
Modal Verbs (Poder, Deber, Querer)
Poder is a modal verb, and this lesson explains how it works with other verbs.
Saber vs Conocer
Explores the other common confusion involving the verb 'saber'.
Preterite Tense Irregular Verbs
The meanings of saber and poder change in the preterite tense ('supe', 'pude').
🏷️ Key Words
✏️ Quick Practice
Quick Quiz: Saber + infinitive vs Poder + infinitive
Question 1 of 3
Which is correct to ask if someone has the skill to cook? '¿___ cocinar?'
🏷️ Tags
Frequently Asked Questions
Can 'no puedo' ever mean 'I don't know how'?
In some informal contexts, yes. If someone asks you '¿Puedes arreglar esto?' (Can you fix this?), you might reply 'No, no puedo' to mean you don't have the skill. However, the more precise way to say you lack the skill is 'No sé cómo hacerlo'.
What about the preterite tense? I heard 'supe' and 'pude' are different.
Yes, they have special meanings in the preterite (a specific past tense). 'Supe' means 'I found out' or 'I learned', and 'Pude' means 'I managed to' or 'I succeeded in'. For example, 'Supe la verdad' (I found out the truth) and 'Pude abrir la puerta' (I managed to open the door).
Is 'saber' always about skills and 'poder' always about ability?
That's the main idea. 'Saber' is for knowledge stored in your brain (skills, facts). 'Poder' is about external factors: physical ability, permission from others, or circumstances allowing you to do something. If it's a 'know-how' question, use saber. If it's a 'can-I' or 'is-it-possible' question, use poder.