Best Birthday Captions Ideas for 16th, 18th & 21st Birthday

by Sharon E. Moore

If you are looking for some fun Instagram birthday caption ideas, look no further! Perhaps you are looking to build your own caption website, in which case it’s worth checking out website builder reviews to find the best platform to do so. Perhaps you just want to ensure that your Instagram birthday messages are the smartest, funniest, most inventive ones around? Either way, read on to discover some great ideas!

Whether it’s your birthday or the birthday of someone special in your life, it’s the one day where the birthday guy or gal can bask in the limelight. It’s essential to make sure they get the attention they deserve. You’ll no doubt want to share pictures of the special occasion and to make sure that the celebrations go off with a bang, you’ll need a witty caption or two to go alongside them. Like the Girl Scouts famous motto, it’s essential to be prepared, so planning some cute captions before the big day is a smart idea, so when the time comes, you can just focus on having the best day ever.

Your caption should fit in with the kind of celebration you’re having. Is it a chilled, intimate dinner, a big kids party, or a lavish birthday bash? No matter how you’ve decided to celebrate, you know there’s that ideal caption out there to match the sentiment. So without further ado, check out these 35 Instagram birthday captions to keep the memories alive once it’s all done and dusted.

16th Birthday Captions for yourself

You are only 16 years for just one year! 16 years has some very remarkable moments attached to it. It is only proper to throw a party on the occasion and throw your hands up to dance and sing to the tunes. The only thing you have to do while celebrating your 16th birthday is to make it memorable. Now, you can make it happen with our select captions up for use on your social media!

16th Birthday Captions For Yourself
16th Birthday Captions For Yourself
  • Cheers to 16 years.
  • 16 Candles has nothing on me!
  • I really auto get a car now.
  • Keep calm and sweet sixteen on.
  • Putting the ‘sweet’ in sweet sixteen.
  • Queen of Sixteen.
  • You only turn 16 once, but I promise to be sweet forever.
  • Birthdays are nature’s way of telling us to eat more cake.
  • Cake is my happy place.
  • Count the memories—not the calories.
  • Happiness is knowing there’s cake later.
  • Happy birthday to me.
  • I wish for more birthday cake.
  • I’m just here for the birthday cake.
  • It’s someone’s birthday somewhere.
  • Life’s too short to say no to birthday cake.
  • Old enough to know better, but still young enough to get away with it.
  • On this day, a queen was born.
  • You want a piece of me?
  • You’re the icing on my birthday cake.

Read – 100+ Savage Instagram Captions For Ex & Haters

Short birthday Captions for 18th Birthday

It is no news that a birthday is a day of friends and fun. It is one of the most significant days of your lives, bar none. So it only makes sense that you let the world know of this day by sharing it on your social media and multiplying your joy. We also know that descriptions need not belong and essay-like. You can express with short, simple sentences about what your significant day means to you. And to complement such a sentiment, we have curated a list of short captions for you to use on all of your birthday posts.

  • 18 doesn’t feel much different, but it sure is fun to say!
  • 18 years of awesomeness.
  • 18 years old, but feeling like I’ve lived for 40 years already.
  • Mama we made it.
  • 18 years of sweetness.
  • Look who’s 18.
  • So this is what 18 feels like.
  • I’m finally 18.
  • 18 years old still crazy.
  • Bringing bigger dreams to 18.
  • 18 years young!
  • Adult-ish
  • Thanks to everyone who made my 18 years on earth the best.
  • Don’t be fooled.
  • License to drive.
  • I don’t know about you, but I’m feeling 18.
  • Here goes nothing #Adulting
  • Turning 18 is so exciting!
  • Cheers to 18 years.
  • From now on I can have ice cream for dinner whenever I want to!
  • Lean, mean, eighteenth-birthday-having machine.
  • Guess who’s a legal adult?

19th birthday captions for Instagram

Birthday is an occasion to celebrate, to indulge in your wishes and to let the world know who you are unapologetically. It is a chance to be you in the truest sense possible. Birthdays are also the reason for friends to come together and have ridiculous amounts of fun! It’s a chance to go wild and post these memories on your social media for everyone to enjoy. To make it easier for all the birthday boys and girls out there, we have made a list of captions you could use on social media to show off the kind of high-flying day you have had.

  • Look forward to your celebration because if you know me, I have got it all planned, my friend.
  • You grow up so fast, you are almost an adult and I cannot be prouder of what you have done.
  • Just a year before you turn into an adult and there you are being the party animal you are.
  • Cheesin’ because I’m 19!
  • Enjoy your last teenage year, kid!
  • It took 19 years to get this awesome.
  • Some would say you’re at an awkward stage: You’re an adult, but still not out of your teens. But you’re never this young again! Happy Birthday, enjoy it!
  • Being able to watch you as you reach this age has been a lot of fun now go out there & shine.
  • Cheers to making you a memorable birthday party that I am sure you would never forget ever.
  • They day 19 is just a filler birthday, so let’s fill it with an awesome party!
  • Happy 19th birthday, the love that I have for you will always be endless that I can promise you.
  • I wish that you would stay being the person you are: generous, kind, sweet and loving my dear.

Read – Best Short Captions For Instagram Selfie

20th Birthday Instagram Captions

The 20s is a great place to be. From feeling excited about the fact that you will soon be a legal adult, to the fact that you have just left your teens, it is obviously a once in a lifetime deal. Needless to say, most of the 20-year-old is out partying and celebrating this very fact. You should too; maybe not necessarily party, but definitely celebrate it the way you see fit. And don’t forget clicking some major pictures to go with the fact that you are 20! Don’t forget to upload them to your favored social media and use the captions selected for you.

20th Birthday Instagram Captions
20th Birthday Instagram Captions
  • Warning: It’s my 20st birthday
  • Cheers to 20 years.
  • The only thing I’m feeling is 20 beers.
  • The only thing I’m feeling is 20 beers.
  • They say you stop growing once you’re out of high school, but I just outgrow my fake I.D.
  • You are the youngest 20-year-old I know.
  • You have no excuse to act stupid. You’re not a teenage anymore, and you’re not old enough to drink.
  • Being 20 is nothing to wine about.
  • Being 20 is nothing to wine about.
  • I.D. love a drink, thanks!
  • I’m going to make my last year in my 20’s the best.
  • 20 doesn’t feel any difference than 20. LOL.
  • Oh thank god, I still have another year until Blink-182 doesn’t like me!
  • Wanna see my I.D.?
  • 20 doesn’t look so bad.
  • There’s a thirst time for everything!
  • 20 looks pretty good on me!
  • I can’t believe I’m 20
  • Started from the bottom now we 20.
  • You look so much older than you did last year when you were a teenager.
  • Care to see my I.D.?
  • Cheers and beers to my 20 years!
  • My first selfie being 20!
  • Hit me with your best shot!
  • 20 and oh so fun!
  • Hakuna some vodka
  • I don’t know about you, but I’m feeling 20.
  • I can think of 20 reasons you should have a good birthday.
  • Smiling into my 20’s.
  • I don’t think of it as my 20th birthday, I see it as my one year anniversary of being able to buy wine.
  • It took me 20 years to get this cute.

Read –  Best Sassy Instagram Captions & Quotes

Funny 21st Birthday Instagram Captions

The truth about birthdays is that it is absolutely about you. Nothing anyone might say to you should change that truth. Now, what is a day of celebration going to be without some fun in your life? Indulge yourself and your wishes this year and celebrate your birthday like never before. And don’t forget to make any excuses and have the full experience when you do! We are here to see that you do with these quality captions selected just for your birthday!

  • New year, same me… because I’m already awesome.
  • Facebook has some exciting news today.
  • The only things getting LIT today are the candles on my cake!
  • Found my birthday crown.
  • This is my year of dreams coming true.
  • I’m too young to be this old.
  • Today’s the day I can wear this birthday crown!
  • It’s not the years that count, it’s the memories you make over these years.
  • You glow, birthday girl.
  • Today is a great day cause it’s my birthday!
  • When the candles cost more than the cake, it’s time to realize you’re getting old.
  • Old enough to know better, but still young enough to get away with it.
  • Birthdays are incomplete without the ones who love and care for you.
  • I hope the birthday cake is as sweet as me.
  • Well, at least I am not as old as I will be next year!
  • Birthdays are good for me. The more I have, the longer I live.
  • Live your life and forget your age.
  • Making my years count instead of counting the years.
  • Another year older, another year wiser? I guess we’ll see!
  • Hold on to your inner child as you grow older.
  • Of course, I don’t know how to act my age. I’ve never been this age before!
  • Eating my cake and wearing it, too.
  • I’m just here for the birthday cake.
  • Surround yourself with people who are more excited for your birthday than you are.
  • I can’t keep calm, it’s my birthday.
  • Hugs, kisses and lots of birthday wishes!
  • I’m not getting older. I’m getting better.
  • May the fork be with you. Let’s eat cake.
  • Gonna party like it’s my birthday…’cause it is.
  • Age is merely the number of years the world has been enjoying me.
  • On this day, a queen was born.

Birthday Captions for friends

Celebrating your friends’ birthdays has some of the best memories attached to it. All the planning, the waiting, the improvising and then finally the payoff, when your friend is excited and surprised and so very happy that you planned and done something so personal for them! It’s some of the best times growing up, without a doubt. Now, along with using social media to tell people about your friends’ birthday, don’t forget to add what they mean to you. Use our captions selected for this special occasion to boost the likes!

  • A friend is one with whom I share happiness, but a best friend is one with whom I can share grief, too. Happy birthday to my best friend!
  • May your troubles be as few and far between as my grandmother’s teeth.
  • Old enough to know better. Young enough to get away with it.
  • On this day, the most beautiful mind was born. She is my best friend and I am proud of her.
  • Some people arrive and make such a beautiful impact on your life, you can barely remember what life was like without them.
  • Thankful this wonderful human was born today
  • The best birthday with the best <3
  • A good friend knows all your stories; a best friend helped you write them. Write a new one tonight as we celebrate your birthday!
  • And a Happy Birthday to [insert name here] you’ve been a great friend to me and always had my back, I hope in the years to come I can have yours.
  • Another year older, another year wiser
  • Best friends are hard to find, because the very best one is already mine. Happy birthday!
  • Birthday baby!
  • Birthdays are just finger posts on the road of getting old.
  • Blessed to see another year <3
  • Don’t worry about your age, you will be older next year. Happy birthday!
  • Happy Birthday [insert name here], I hope your birthday is as sweet as you and you’ll be as happy as you make me when I’m with you.
  • Happy Birthday [insert name here], You’ve been my best friend since we were little kids and we’ve been doing some crazy things together, but since we’re grown up now i guess its time to do even crazier things.
  • Happy Birthday to me, the only person I have lie to about age 🙂
  • Happy birthday to my best friend, the one who laughs at my silly jokes and still stands beside me even when I do dumb and stupid things!
  • Happy birthday to the best
  • Happy Birthday to the most handsome/gorgeous, charming, kind and a great person and also to my friend [insert name here].
  • Happy birthday, can’t wait to celebrate this one and many more!
  • Happy, happy birthday! You deserve all the cakes, love, hugs and happiness today. Enjoy your day my friend!
  • Here’s to you babe, celebrating all the good times we have had
  • I am grateful for your true friendship. Hope you birthday is amazing as you are my best friend!
  • I feel privileged to have spent one more year of my life with you. Happy birthday!
  • I’m just here for the birthday cake.
  • I’m so freakin’ happy you were born.
  • I’m so glad this beautiful human continues to exist another year.
  • It’s time to party
  • It’s your birthday and you can cry if you want to
  • Life
  • F.R.I.E.N.D.S. Fight for you. Respect you. Include you. Encourage you. Need you. Deserve you. Stand by you.
  • For your birthday, I wanted to give you something that was both funny and charming, but then I remembered you already have me in your life.
  • Friends are the family we choose for ourselves.
  • Friendship isn’t a big thing. It’s a million little things.
  • Had the best birthday ever!
  • Happiest of birthdays to my best friend, wishing you all the best on your special day
  • Life was meant for good friends and great adventures. Let’s make your birthday one of them.

So there you have it 35 awesome birthday Instagram captions that are sure to get you noticed and keep the fun going long after the party is over. So now you’ve got your captions sorted, it’s time to focus your energy on finding that perfect party outfit to really make your pictures pop!

About Sharon E. Moore

Sharon E. Moore is an inspirational writer and creator of captions for Instagram. She loves to write about motivation, self-improvement, and success. Her goal is to help others achieve their dreams by providing them with the inspiration they need to keep going.

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