You can have the right experience, the right answers, and a resume that got you in the door, and still walk out of an interview feeling like you blew it. A lot of the time, the problem was how it came out. Your voice went up at the end of every sentence. You talked too fast. You said "um" a dozen times. You kept going after you'd already answered the question.

The good news is that sounding confident in an interview is mostly a handful of habits, and you can practice every one of them before you walk in. You don't have to feel totally calm. You just have to sound steady.

In this guide I'll go through what makes people sound nervous in interviews, how to get your voice ready beforehand, how to answer so you sound sure of yourself, what to do when you get a question you didn't expect, and a simple plan for the week before your interview. If you're interviewing over the phone, also read how to sound confident on the phone.

What makes you sound nervous in an interview

Most interviewers aren't trying to catch you out. But they are listening, and a few things tell them you're unsure, even when your answer is good:

• Your voice goes up at the end of sentences. When you say "I managed a team of five?" like it's a question, it sounds like you're asking permission instead of telling them what you did.
• You talk too fast. Nerves speed you up. You rush through your answer to get it over with, and it comes across as anxious.
• Filler words. "Um," "like," "you know," "sort of." A few are normal. A lot of them make you sound like you're not sure what you think.
• Your voice trails off. You start a sentence strong and fade out by the end, so your most important words are the quietest ones.
• Softening everything. "I just kind of helped out with the project, I guess." If you did the work, say you did the work. There's a whole list of these in words that make you sound weak.
• Rambling. You answer the question, then keep talking because the silence feels awkward.

Every one of these can be fixed with practice. Let's go through how.

Get your voice ready before the interview

Your voice is a muscle thing as much as a confidence thing. If you walk in cold, tense, and holding your breath, it's going to come out tight and thin. A few minutes of prep makes a real difference.

Warm up your voice

Don't let "Hi, nice to meet you" be the first thing you say all day. Talk out loud on the way there. Hum for a minute with your lips closed, then let it open up into an "mmm-ahh." Read a paragraph of something out loud. This wakes your voice up so it doesn't crack or come out raspy on your first answer. If you want a full routine, these voice exercises for speaking are a good place to start.

Breathe low, not high

When you're nervous, you breathe up in your chest and your shoulders creep up. That makes your voice tight and shaky. Before you go in, and while you're waiting, take a few slow breaths down into your belly. Let your shoulders drop. It calms your body and gives your voice something to sit on. More on this in how to breathe when speaking.

Know what to do if your voice shakes

If your voice tends to wobble when you're nervous, don't try to force it steady. Slow down, take a breath before you start each answer, and speak a little lower and a little louder than feels natural. How to stop your voice from shaking goes through this step by step, and how to calm your nerves before public speaking works for interviews too.

How to sound confident when you answer

Finish your sentences going down

This is probably the single biggest fix. When you make a statement, let your voice come down at the end, like you're putting a period on it. "I led the move to the new system." Down at the end. Not up. Practice saying a few of your answers out loud and listen for it. Once you hear the difference, you'll start catching yourself.

Slow down a notch

You don't need to talk slowly. Just a little slower than you would if you were nervous. Give each sentence room. If you know you're a fast talker, how to stop talking so fast has some simple drills.

Use pauses instead of filler

When you need a second to think, just stop for a second. Don't fill it with "um." A short pause before you answer makes you look thoughtful. A pause after an important point lets it land. It feels long to you, but to the interviewer it sounds calm. See how to use pauses when speaking and how to stop saying um.

Keep your volume up to the end

Aim your voice at the person across the table, not at the table. Keep the same volume all the way through the last word of each sentence. If people often ask you to repeat yourself, read how to project your voice.

Get straight to the point

Answer the question in your first sentence, then back it up. If they ask, "Why do you want this job?", don't start with your life story. Start with the answer: "Because I want to work on bigger accounts, and this role lets me do that." Then give a reason or an example. Then stop. Stopping is where a lot of people lose it. Say your answer, land it, and let them ask the next question. If you tend to wander, how to stop rambling will help.

Prepare answers you can say out loud, not memorize

Memorizing answers word for word usually backfires. You sound stiff, and if you lose your place, you panic. Instead, prepare the main points and a few real examples from your work, then practice saying them out loud in different ways until they feel natural.

A simple way to tell a work example is: what the situation was, what you did, and how it turned out. Keep it to a minute or so. Have four or five of these ready, and you'll find most interview questions can be answered with one of them.

And say them out loud. Thinking through an answer in your head is not the same as hearing yourself say it. The first time you say something out loud, it almost always comes out clunky. You want that to happen at your kitchen table, not in the interview.

What to do when you get a question you didn't expect

It's going to happen. Here's how to handle it without falling apart:

• Take a breath and pause. Two or three seconds is fine.
• Repeat or rephrase the question. "So you're asking how I'd handle a client who's unhappy with the result?" That buys you time and makes sure you're answering the right thing.
• It's fine to say you need a second. "That's a good question. Let me think about that for a moment."
• If you don't know, say what you do know. Being straight with them sounds a lot more confident than bluffing.

There's a lot more on this in how to think on your feet.

Your body affects your voice

How you sit changes how you sound. If you're slumped, your breathing gets cramped and your voice gets smaller. Sit up, feet flat on the floor, shoulders relaxed. Keep your hands where they can move a little when you talk instead of gripping the chair or your pen. Look at the interviewer when you make your main points. If you want more on this, read how to use body language in public speaking. Most of it carries over to an interview.

If your interview is on video, the same things apply, plus a few more about the camera and your setup. How to be confident on camera covers those.

A simple plan for the week before your interview

• Day 1: Write down the questions you're most likely to get and the four or five work examples you want to use.
• Day 2: Record yourself answering three of the questions on your phone. Listen back. Notice your speed, your filler words, and whether your voice goes up at the end of sentences.
• Day 3: Pick the one habit that bothered you most and work only on that. Answer the same three questions again.
• Day 4: Practice getting straight to your answer in the first sentence, then stopping. Do five questions.
• Day 5: Have a friend ask you questions, including a couple you haven't seen. Practice the breath and the pause.
• Day 6: Record yourself again and compare it to Day 2.
• Interview day: Warm up your voice on the way, breathe low while you wait, and say your first few words a little slower than you want to.

Frequently asked questions

How do I sound confident in an interview if I'm really nervous?

You don't have to stop being nervous. Focus on a few things you can control: breathe low before you answer, slow down a little, let your voice go down at the end of sentences, and pause instead of saying "um." Those make you sound steady even when your heart is racing.

How do I speak confidently in a job interview without sounding arrogant?

Say what you did plainly, and give credit where it's due. "I led the project, and the team did great work on it" is confident. Confidence is being clear about what you did. Arrogance is putting other people down or overstating it.

How do I sound confident in a phone interview?

Stand up or sit up straight, smile when it fits, and slow down, because on the phone they only have your voice to go on. More in how to sound confident on the phone.

Should I memorize my interview answers?

No. Know your main points and your examples well, and practice saying them out loud in different ways. That way you sound natural and you don't freeze if you lose your place.

What if my mind goes blank during an interview?

Take a breath, then repeat the question back. That usually gets you going again. If not, it's fine to say, "Can I take a second to think about that?"

What to work on next

Interviews are one place where your voice really gets tested, but the same habits help in meetings, on calls, and anywhere you need people to take you seriously. Read how to speak with confidence and how to sound more authoritative next. This is the core of what I teach in the C.O.M.M.A.N.D. System: get your breathing and your voice steady first, then work on getting your message across clearly.

The short version

To sound confident in an interview, warm up your voice before you go in, breathe low, and slow down a notch. Let your voice go down at the end of your sentences, pause instead of saying "um," and keep your volume up to the last word. Get straight to your answer, back it up with a real example, and stop. Practice out loud the week before, and record yourself so you can hear what the interviewer will hear. If you want to find out what your voice is doing right now, take the free C.O.M.M.A.N.D. vocal assessment.