En primer lugar

You use this phrase at the very start of a sentence or a paragraph. It almost always requires a comma right after it. Think of it as a drumroll. En primer lugar, [insert your big point here]. It is usually followed later by en segundo lugar (in the second place) or por otro lado (on the other hand). You can use it to justify a decision, explain a complex process, or list requirements. It works best when you have at least two things to say. If you say en primer lugar and then stop forever, your listener will be waiting for the second part like a cliffhanger in a Netflix series. It's cruel to leave them hanging! Use it when you want to sound organized in an email or a serious conversation. It helps you control the flow of information.

This phrase lives in the "Neutral to Formal" neighborhood. You won't hear teenagers shouting it at a skatepark. However, you will hear it constantly in office meetings, news reports, and university lectures. It's the blazer of the Spanish language—it dresses up your sentence without making it look like you're wearing a tuxedo. You can use it with your parents if you're trying to explain why you need to borrow the car. You should definitely use it in a job interview on Zoom. It shows that you can think linearly. In very casual WhatsApp chats, it might feel a bit stiff. In those cases, you'd probably just say primero. But if you want to make a point stick, En primer lugar is your go-to tool.

Imagine you are writing a polite but firm email to your landlord. En primer lugar, el grifo sigue goteando. (In the first place, the faucet is still dripping.) It sounds much more professional than just complaining. Or think about a TikTok creator explaining a skincare routine. En primer lugar, hay que limpiar la cara. (In the first place, you have to clean your face.) It makes the tutorial feel authoritative. Even in a break-up—though we hope you don't need this—someone might say, En primer lugar, ya no nos comunicamos. (In the first place, we don't communicate anymore.) It’s a way to bring order to emotional chaos. It’s also great for travel vlogging when listing the best spots in Madrid. It keeps the viewers following your logic.

Use it when you have a list of reasons. Use it when you are defending your opinion in a debate. Use it in academic writing or professional reports. It is perfect for the "Why should we hire you?" question in an interview. En primer lugar, tengo mucha experiencia. (In the first place, I have a lot of experience.) Use it when you are explaining a recipe or a set of instructions to a friend. It helps prevent them from skipping steps. Basically, use it whenever you want to appear like a person who has their thoughts neatly filed in a cabinet rather than scattered on the floor.

Don't use it for physical locations or races. If you come in first in a 5K run, don't say quedé en primer lugar. You should say quedé primero or en primer puesto. En primer lugar is for abstract ideas and logical points, not for athletic trophies. Also, don't use it for very tiny, unimportant things. If you're deciding which topping to put on a pizza, saying En primer lugar, me gusta el pepperoni sounds a bit too dramatic. Your friends might think you're about to give a TED talk on ham and pineapple. Keep it for when the structure actually matters.

One big mistake is forgetting the En. Some people just say Primer lugar, which sounds like a broken robot. Another mistake is mixing it with English structure.

You don't need the el. It’s short and sweet. Also, don't use it if you don't have a "second place."

If you only have one point, just use primero. En primer lugar implies a sequence is coming. It’s like a promise you have to keep. Don't be a sequence-breaker!

If you want to change things up, you can use Para empezar (to start with). This is a bit more casual and very common in conversation. Lo primero de todo (the first thing of all) is great for adding emphasis. It’s like saying "First and foremost." For very formal writing, you might see Primeramente. This sounds quite "old-school" and legalistic. In Spain, you might hear De entrada (from the start), which is punchy and direct. In Latin America, Antes que nada (before anything) is a favorite for prioritizing a point with a bit of emotional warmth. Each one changes the flavor slightly, but the goal remains the same: being the boss of your list.

Can I use it in a text message? Yes, but only if you are explaining something serious or long. Otherwise, it might seem a bit too formal for a quick "LOL."

Is it the same as 'Firstly'? Exactly. It functions just like 'firstly' or 'first of all' in an English essay.

Do I always need a 'second place'? Ideally, yes. It sets an expectation. If you don't have a second point, use primero.

Can I say 'En primer lugar de todo'? It’s better to say Lo primero de todo. Adding de todo to En primer lugar sounds a bit redundant and clunky.

Is it okay for B1 students? Absolutely, but it’s considered a B2/C1 transition word because it shows you can organize complex discourse. Using it correctly is a massive "level up" for your fluency.