What does "by" mean in Spanish? Learn the translation, usage, and grammar rules for the English preposition "by" when converting to Spanish, with examples and common phrases.
Introduction
English speakers often encounter the preposition by in everyday sentences, but when they need to express the same idea in Spanish, the choice is not always straightforward. The Spanish language offers several options—por, en, a, con, and even bajo—depending on the nuance you want to convey. Consider this: understanding when to use each one is essential for clear communication and for achieving a natural flow in Spanish. This article breaks down the meaning of by in Spanish, explains the most common translations, and provides practical examples to help you use the correct preposition confidently.
Direct Translation of "by"
The most common Spanish equivalent for the English preposition by is por. This translation works when the idea behind by involves means, agency, cause, or duration.
- By car → en coche (literally “by car”)
- By hand → a mano
- By chance → por casualidad
- By means of → por medio de
In these cases, por captures the sense of “using something as a tool or method.” It is also used to indicate agency where the English construction uses by with a passive verb.
When to Use por for “by”
1. Means or Method
When you want to specify how something is done, por is the go‑to preposition.
- She wrote the report by herself. → Ella escribió el informe por su cuenta.
- We traveled by train. → Viajamos por tren.
2. Agent in Passive Sentences
In passive voice, English often uses by to introduce the agent. Spanish replaces this with por (or sometimes por el/la/los/las) Worth keeping that in mind..
- The window was broken by the wind. → El viento rompió la ventana. (active)
- The painting was sold by the gallery. → La galería vendió el cuadro. (active)
- The mistake was made by the student. → El error fue cometido por el estudiante.
3. Duration of Time
When by indicates a deadline or a period of time, por is used.
- Finish the project by Friday. → Termina el proyecto para el viernes. (Note: para is used for deadlines, but por can also express “by” when referring to a time span.)
- I have lived here by ten years. → He vivido aquí por diez años.
Other Spanish Prepositions That Can Translate “by”
While por covers many contexts, Spanish also uses other prepositions for specific meanings of by.
en – By (Location or Surface)
When by refers to position next to something or along a surface, en is the correct choice Nothing fancy..
- The café is by the park. → El café está junto al parque. (more natural)
- She sat by the window. → Ella se sentó junto a la ventana.
In formal writing, you may see en used for “by” in the sense of “along” or “beside.”
a – By (Distance)
When indicating distance or proximity, a can replace by Worth knowing..
- The house is by 200 meters. → La casa está a 200 metros.
con – By (With)
If the meaning is by means of an instrument or tool, con is appropriate.
- He solved the puzzle by using logic. → Él resolvió el rompecabezas con lógica.
bajo – By (Under)
In contexts where by means under or beneath, bajo is used.
- The painting hangs by the fireplace. → El cuadro cuelga bajo la chimenea.
Practical Examples in Context
Below are sentence pairs that illustrate the correct Spanish translation of by in various scenarios.
| English | Spanish | Explanation |
|---|---|---|
| **I bought the ticket by credit card.Even so, ** | *Compré el boleto por tarjeta de crédito. Worth adding: * | Means/method → por |
| **The dog barked by the door. ** | *El perro ladró junto a la puerta.And * | Position → junto a (or en) |
| **She arrived by bus. Plus, ** | *Ella llegó en autobús. Which means * | Means → en (common for transport) |
| **We waited by the river. ** | Esperamos junto al río. | Position → junto a |
| The book is by the lamp. | El libro está junto a la lámpara. | Position → junto a |
| **He finished the race by running.Still, ** | *Él terminó la carrera por correr. Because of that, * | Means → por |
| **The email was sent by John. Plus, ** | *El correo fue enviado por Juan. * | Agent → por |
| **We celebrated by the pool.And ** | *Celebramos junto a la piscina. * | Position → junto a |
| **The cat slept by the fire.Here's the thing — ** | *El gato durmió junto al fuego. * | Position → junto a |
| I’ll be there by five. | Llegaré a las cinco. | Time → a (deadline) |
| **He worked by night.Still, ** | *Él trabajó por la noche. * | Time period → por |
| **The painting was made by Leonardo.Worth adding: ** | *El cuadro fue hecho por Leonardo. * | Agent → por |
| She sang by herself. | Ella cantó por su cuenta. | Means/alone → por |
| The package arrived by mail. | *El paquete llegó por correo.In practice, * | Means → por |
| **He stood by his friend. ** | *Él permaneció junto a su amigo. |
Grammar Tips for Using “by” in Spanish
- Context is key. Always ask yourself what idea by is
