Saber Conjugation: All Tenses, Explained Simply (with Examples)
Full disclosure: This post contains affiliate links. ?
Saber means “to know”, but the moment you open its conjugation table it throws two surprises at you: a yo form that looks nothing like the infinitive (sé), and a preterite that means “I found out” rather than “I knew” (supe). Get past those two quirks and the rest of saber is refreshingly predictable.
Don't worry. By the end of this guide you'll have every tense of saber laid out in clean tables, with example sentences for each, plus the one distinction that trips up almost every learner: saber versus its near-twin conocer. But first, the hack that saves you weeks of work.
The Saber Conjugation Hack: Learn These First
Here's the honest truth about conjugation tables: you do not need to memorise all seventeen tenses before you can use saber in real conversation. Native-sounding beginners lean on a tiny handful of forms.
If you learn nothing else today, learn the present tense of saber by heart:
- sé (“I know”), sabes (“you know”), sabe (“he/she/it knows”), sabemos (“we know”), sabéis (“you all know”), saben (“they know”)
That single row of six words will carry you through “I know how to…”, “Do you know…?”, and “She knows that…” in almost any conversation. Add the preterite (supe, “I found out”) for the moment something clicked into place, and the imperfect (sabía, “I used to know” / “I didn't know at the time”) for background knowledge, and you've covered the vast majority of everyday speech. Everything below that is for rounding out your Spanish over time, not for blocking you today.
Right, now let's build the full picture.
Saber at a Glance
| Infinitive | saber |
| Gerund (-ing) | sabiendo |
| Past participle | sabido |
| Verb type | irregular |
| English meaning | “to know” (facts, information, how to do something) |
A quick note on the pronouns I'll use in every table:
| Spanish | English |
|---|---|
| yo | I |
| tú | you (informal singular) |
| él / ella / usted | he / she / you (formal singular) |
| nosotros / nosotras | we |
| vosotros / vosotras | you all (informal, Spain) |
| ellos / ellas / ustedes | they / you all (formal) |
Saber Conjugation: Indicative Mood (Simple Tenses)
The indicative is the everyday, “stating facts” mood, and these five simple tenses are the backbone of saber. Here they all are in one place:
| Pronoun | Present | Preterite | Imperfect | Future | Conditional |
|---|---|---|---|---|---|
| yo | sé | supe | sabía | sabré | sabría |
| tú | sabes | supiste | sabías | sabrás | sabrías |
| él / ella / usted | sabe | supo | sabía | sabrá | sabría |
| nosotros/as | sabemos | supimos | sabíamos | sabremos | sabríamos |
| vosotros/as | sabéis | supisteis | sabíais | sabréis | sabríais |
| ellos / ellas / ustedes | saben | supieron | sabían | sabrán | sabrían |
And here's each one in action:
- Present – Sé la respuesta. – “I know the answer.”
- Preterite (a specific moment of finding something out, not an ongoing state) – Supe la verdad ayer. – “I found out the truth yesterday.”
- Imperfect (knowledge you already had, as background) – No sabía que hablabas alemán. – “I didn't know you spoke German.”
- Future – Sabrás la nota mañana. – “You'll know the grade tomorrow.”
- Conditional – Sabría la respuesta, pero no estudié. – “I would know the answer, but I didn't study.”
Saber Conjugation: Indicative Mood (Compound Tenses)
Good news here: the compound tenses are the easy part. Every one of them is simply the verb haber (conjugated) plus the past participle sabido. Learn haber once and these fall into place for every verb in Spanish.
| Pronoun | Present Perfect | Pluperfect | Future Perfect | Conditional Perfect |
|---|---|---|---|---|
| yo | he sabido | había sabido | habré sabido | habría sabido |
| tú | has sabido | habías sabido | habrás sabido | habrías sabido |
| él / ella / usted | ha sabido | había sabido | habrá sabido | habría sabido |
| nosotros/as | hemos sabido | habíamos sabido | habremos sabido | habríamos sabido |
| vosotros/as | habéis sabido | habíais sabido | habréis sabido | habríais sabido |
| ellos / ellas / ustedes | han sabido | habían sabido | habrán sabido | habrían sabido |
- Present perfect – Siempre he sabido que eras especial. – “I've always known you were special.”
- Pluperfect – Ya había sabido la noticia cuando me llamaste. – “I had already found out the news when you called me.”
- Future perfect – Para el viernes, ya habrás sabido los resultados. – “By Friday, you'll already have found out the results.”
- Conditional perfect – Habría sabido qué hacer. – “I would have known what to do.”
(There's one more, the pretérito anterior, hube sabido, but you can happily ignore it. It's so rare in modern Spanish that even native speakers go their whole lives without using it.)
Saber Conjugation: Subjunctive Mood
The subjunctive is the mood of doubt, wishes, emotion, and things that aren't (yet) facts. It feels intimidating at first, but with saber you really only need two forms day to day: the present subjunctive and the imperfect subjunctive.
| Pronoun | Present Subjunctive | Imperfect Subjunctive (-ra) | Imperfect Subjunctive (-se) |
|---|---|---|---|
| yo | sepa | supiera | supiese |
| tú | sepas | supieras | supieses |
| él / ella / usted | sepa | supiera | supiese |
| nosotros/as | sepamos | supiéramos | supiésemos |
| vosotros/as | sepáis | supierais | supieseis |
| ellos / ellas / ustedes | sepan | supieran | supiesen |
The imperfect subjunctive has two forms, the -ra and the -se. They mean exactly the same thing and are interchangeable; the -ra form is more common in speech, especially in Latin America, so lead with that one.
- Present subjunctive – Dudo que sepas la respuesta. – “I doubt (that) you know the answer.”
- Imperfect subjunctive – Si supiera la verdad, te lo diría. – “If I knew the truth, I would tell you.”
The subjunctive also has compound forms, built (again) from haber plus sabido:
| Pronoun | Present Perfect Subj. | Pluperfect Subj. |
|---|---|---|
| yo | haya sabido | hubiera / hubiese sabido |
| tú | hayas sabido | hubieras / hubieses sabido |
| él / ella / usted | haya sabido | hubiera / hubiese sabido |
| nosotros/as | hayamos sabido | hubiéramos / hubiésemos sabido |
| vosotros/as | hayáis sabido | hubierais / hubieseis sabido |
| ellos / ellas / ustedes | hayan sabido | hubieran / hubiesen sabido |
There's also a future subjunctive (supiere, supieres…), but you can safely file it under “nice to recognise, never need to produce”. It survives only in legal documents and a handful of archaic set phrases.
Saber Conjugation: Imperative Mood (Commands)
| Pronoun | Affirmative | Negative |
|---|---|---|
| tú | sabe | no sepas |
| usted | sepa | no sepa |
| nosotros/as | sepamos | no sepamos |
| vosotros/as | sabed | no sepáis |
| ustedes | sepan | no sepan |
You'll barely ever command someone to “know” something, so this table gets far less real-world use than ser‘s or hablar‘s. The one construction you'll genuinely hear is the present subjunctive doing imperative-style duty in the fixed phrase que sepas, “just so you know”:
- ¡Que sepas que te lo agradezco mucho! – “Just so you know, I really appreciate it!”
- Sabe que puedes contar conmigo. – “Know that you can count on me.” (a little literary)
When to Use Saber (Saber vs Conocer)
This is the real battle, and it catches even advanced learners. Spanish has two separate verbs for “to know”, and they are not interchangeable.
Saber is for facts, information, and know-how, things you either have memorised or can do:
- Sé la respuesta. – “I know the answer.” (a fact)
- Sé nadar. – “I know how to swim.” (a skill, saber + infinitive)
- ¿Sabes qué hora es? – “Do you know what time it is?”
Conocer is for familiarity, being acquainted with a person, place, or thing:
- Conozco a María. – “I know María.” (notice the personal a before a person)
- Conozco Madrid. – “I know Madrid.” (I've been there, I'm familiar with it)
The one-line rule: saber is for what's in your head; conocer is for what you've met. You sabes a fact and you conoces a city. Mix them up and a Spanish speaker will still understand you, but conozco la respuesta sounds like you're on first-name terms with the answer rather than simply knowing it.
One more twist: in the preterite, saber changes meaning. Sabía (imperfect) is “I knew” as an ongoing state, but supe (preterite) is “I found out”, the exact moment the knowledge arrived.
- Sabía su nombre. – “I knew his name” (already, as background).
- Supe su nombre. – “I found out his name” (right at that moment).
Why Is Saber Irregular?
Saber‘s irregularities don't all come from the same place, which is why the full set of tables looks so patchy.
- The irregular yo form, sé, doesn't follow the regular -o pattern you'd expect (sabo doesn't exist). It's simply a worn-down irregular survivor, and without its accent mark it would be spelled identically to the reflexive pronoun se, which is exactly why that accent matters so much (more on that below).
- The preterite stem supe is what's called a “strong preterite”, the same family as tuve (tener), pude (poder), and estuve (estar). These stems are stressed on the second-to-last syllable rather than the last, which is why supe and supo carry no written accent, unlike the regular -í / -ió endings you'd see on a regular verb.
- The future and conditional stem sabr- is “syncopated”: Spanish drops the e from the infinitive ending (saber → sabe- → sabr-) before adding the regular future/conditional endings. You'll see the exact same trick in poder → podr- and querer → querr-.
- The subjunctive stem sep- is unique to the subjunctive mood and doesn't match the present indicative stem sab- at all, so it has to be learned as its own small chunk.
Four different irregularities, four different reasons. Once you see the pattern, none of it is arbitrary any more.
Common Mistakes with Saber
A few traps that catch nearly everyone:
- Confusing saber and conocer. As above: facts and skills take saber, people and places take conocer. When in doubt, ask yourself “could I write this down as a fact?” If yes, it's saber.
- Sé (the verb) vs se (the pronoun). Sé with an accent is “I know” (or the tú command “know”). Without the accent, se is the reflexive/impersonal pronoun (se llama, se puede). Same letters, different word entirely.
- Treating supe as “I knew”. The preterite of saber almost always means “I found out” or “I realised”, not an ongoing state of knowing. If you mean “I knew (already)”, reach for sabía instead.
Saber Conjugation FAQ
Is saber regular or irregular? Irregular. The yo form (sé), the preterite stem (sup-), the future/conditional stem (sabr-), and the subjunctive stem (sep-) all break from the regular pattern in their own way.
What's the difference between saber and conocer? Both translate as “to know” in English, but saber is for facts and skills (sé la respuesta, sé nadar), while conocer is for being familiar with a person or place (conozco a María, conozco Madrid).
What are the six present-tense forms of saber? Sé, sabes, sabe, sabemos, sabéis, saben, which is “I know, you know, he/she knows, we know, you all know, they know.”
Why does supe mean “found out” instead of “knew”? Spanish preterites describe a completed, bounded action. Since “knowing” is normally an ongoing state, the preterite of saber naturally shifts to mean the moment that state began, the instant you found something out.
How do you conjugate saber in the past tense? Two main options. The preterite (a specific moment of finding out) is supe, supiste, supo, supimos, supisteis, supieron. The imperfect (ongoing or background knowledge) is sabía, sabías, sabía, sabíamos, sabíais, sabían.
¡Ya Sabes Saber!
Ya sabes means “you already know”, and after all that, you genuinely do. You've got every tense of saber in front of you, an example for each, the saber vs conocer distinction nailed down, and the backstory behind its irregular corners.
The fastest way to lock these in is to use them. Build a few of these forms into flashcards (we love Anki for exactly this), then start dropping sé and supe into real sentences out loud. While you're at it, pair this with our guide to ser vs estar, another pair of Spanish verbs that look interchangeable in English but aren't, and our guide to Spanish numbers so you can actually say sé contar hasta cien and mean it. If you'd like to hear saber used naturally by native speakers, SpanishPod101 is a great listening resource.
But the tables were only ever the warm-up. The whole point of learning sé, sabes and sabe is to walk up to a real person and tell them something you genuinely know, which is exactly what we get you doing from day one inside the Fluent in 3 Months Bootcamp. So go and know something in Spanish. ¡Ahora ya lo sabes!
Social