Letter to My Unborn Baby: What to Write, With Examples

Short answer

A letter to your unborn baby is a note you write during pregnancy for your child to read when they’re older. Write about how you found out, what you’re feeling each trimester, the world they’re arriving into and your hopes for them. Write several short letters rather than one perfect one, then keep them for a milestone like their 18th birthday.

If you’re searching for how to write a letter to your unborn baby, start small: one honest page about what this week of pregnancy actually feels like. You don’t need to be a writer. Your child won’t care about phrasing. They’ll care that you were thinking about them before you ever met. Below you’ll find prompts for each trimester, example letters from a mom and a dad, and ideas for what to do with pregnancy letters once your baby arrives.

When my daughter was on the way, I meant to write to her every week. I managed a few notes, and then the nursery, the paperwork and the nerves took over. The handful I did write are the ones I treasure most, because they hold a version of me that only existed for those months. That’s the case for writing even a little.

Why write a letter to your unborn baby?

A letter to your unborn baby captures a time your child can never remember and you will quickly forget. Pregnancy is full of details that fade fast once a newborn arrives: the first kick, the name debates, the song you played in the car.

It gives your child their own beginning. Every child eventually asks, “What was it like before I was born?” A letter answers in your voice.
It helps you process the experience. Many parents find that writing slows the worry and makes the pregnancy feel more real, especially in the early weeks before anyone else knows.
It brings the other parent in. Dads and partners often feel like spectators during pregnancy. Writing is a concrete way to start a relationship with the baby.
It becomes a gift later. Pregnancy letters make a moving present for an 18th birthday, a wedding or the day your child becomes a parent themselves.

What do you write in a letter to your unborn baby?

Write about four things: how you found out, how you feel right now, what life looks like as they’re on their way, and what you hope for them. Specific, ordinary details are what your child will love most.

The moment you found out. Where you were, what you did with the test, who you told first and how they reacted.
Your body and your feelings this week. Cravings, nausea, the tiredness, the joy, the fear. Honesty reads as love.
The world they’re arriving into. Where you live, what’s in the news, what a loaf of bread costs, the song that’s everywhere.
Your family. Who’s waiting for them: siblings, grandparents, the dog that doesn’t know what’s coming.
Names. The shortlist, the names you rejected, the reason you chose the one you chose.
Your hopes. Not a career plan. Hopes about how they’ll feel: loved, curious, brave enough to try things.

Letter prompts for each trimester

Pregnancy letters work best when they follow the pregnancy itself. Each trimester has its own mood, so match your letter to where you are.

First trimester (weeks 1–13): the secret

How did you find out? Describe the next hour in as much detail as you can.
Who knows so far, and how did you tell them?
What are you most nervous about right now?
What does it feel like to keep this secret from almost everyone?
What did you think and feel at the first scan or first heartbeat?
What are you craving, and what can you suddenly not stand?

Second trimester (weeks 14–27): getting real

Describe the first time you felt them move, or felt the kick through your partner’s belly.
How did you share the news more widely, and what did people say?
Did you find out the sex? Why or why not, and how did it change how you picture them?
What names are on the list, and which ones have been vetoed?
What do you sing, play or read to the bump?
What’s one thing from your own childhood you want them to have?

Third trimester (weeks 28–40): almost here

Describe the nursery or the corner of a room you’ve made ready.
What does your daily life look like now, and what will change most?
What are you afraid of about the birth, and what are you looking forward to?
What do you imagine the first moment of meeting them will be like?
What do you want them to know about the family they’re being born into?
Write the last letter before they arrive. What do you want to say while it’s still just you?

Once your baby arrives, the same habit carries on naturally. Our guide to the first birthday letter to your baby picks up where pregnancy letters leave off.

Example letter to an unborn baby from mom

A letter from mom can be tender, funny and frank about how strange and wonderful pregnancy feels. Here are two examples at different stages. Borrow the structure, not the words.

From mom, week 7

Hello, tiny one,

You are about the size of a blueberry and you have already taken over my life. I found out on a Sunday morning. I took the test in the upstairs bathroom, sat on the edge of the tub and stared at it for so long that your dad knocked to ask if I’d fallen asleep.

I haven’t told anyone else yet. It feels like carrying a lit candle through a crowded room. I keep catching myself smiling in the supermarket.

I’m scared, if I’m honest. Scared something will go wrong, scared I won’t know what I’m doing. But underneath the fear is this enormous, quiet happiness that I didn’t know I had room for.

Grow well. I’m already yours.

Mom

From mom, week 34

Dear little one,

You kicked so hard during dinner last night that my plate moved. Your big sister put her hand on my belly and said, “He’s saying hi.” She has decided you’re a boy. We’ll see.

The crib arrived in a box that was far too heavy, and it took your dad two evenings and some words I won’t repeat to build it. Your clothes are washed and folded. They are so small I can’t believe a person will fit in them.

I don’t know who you’ll be. I hope you’re kind. I hope you laugh easily. I hope you never stop asking why. Mostly I hope you always know how wanted you were, before we even knew your face.

See you soon.

Love, Mom

Example letter to an unborn baby from dad

A letter to an unborn baby from dad is often the first real conversation a father has with his child. It doesn’t need to be emotional on the surface. Practical, plain and honest is perfect.

From dad, week 20

Hey kid,

Today I saw you on the scan screen. You were upside down with one hand near your face like you were thinking about something important. The sonographer pointed out your spine and I nodded like I could see it. I couldn’t. I was too busy trying not to cry in front of a stranger.

I should tell you who I am right now, because you’ll only ever know a later version. I’m 33. I work too much. I make a decent omelet and a bad risotto. I’ve been reading baby books on my lunch break and hiding them under my laptop.

Here’s my promise: I’ll show up. For the 3 a.m. feeds, the school plays, the bad days. I won’t always get it right, but I’ll always be there.

Your dad

If you’re a partner who isn’t carrying the baby, the second-trimester prompts are a good place to begin: feeling the first kick through the belly, the first scan, the name arguments. Those are moments you’re fully part of.

Should you write pregnancy letters on paper, as voice notes or digitally?

Any format works, and many parents mix them. Paper feels lovely in the hand; voice notes preserve something a page can’t, which is how you sounded when you were waiting for them.

A paper notebook by the bed is the easiest habit to keep. Choose acid-free paper and a pen that won’t fade.
Voice notes are a gift for the third trimester, when writing feels like effort. Read your letter aloud, or just talk to the bump. Our guide on how to save your child’s voice covers keeping audio safe for decades.
Video of a partner talking to the bump, or the moment you told the grandparents, is impossible to recreate later.
Digital letters are easy to write on your phone during a slow commute or a 2 a.m. bathroom trip, and easy to schedule for later.

Some parents also set up an email address for their baby during pregnancy and send letters there. It can work, but it relies on you remembering the password for 18 years and handing it over. We cover the pros and cons in should you create an email address for your baby.

What should you do with letters to your unborn baby?

Decide on a day for your child to receive them, then store them so they survive until then. Popular choices are an 18th birthday, a wedding day, or the day they find out they’re expecting a child of their own.

Good moments to give pregnancy letters

Moment	Why it works
Their 13th birthday	Old enough to understand, young enough to feel close to you
Their 18th birthday	The classic choice, often paired with an 18th birthday letter
Their wedding morning	A reminder of where their story started on the day it changes
When they’re expecting a baby	They’ll finally understand every word, from the other side
Spread across birthdays	One pregnancy letter per year keeps the story unfolding

How to keep them safe

Keep paper letters in a labeled box with the baby book, out of sunlight and damp, and tell a trusted relative where it is.
Scan or photograph handwritten letters so a copy exists if the originals are lost.
Back up voice notes and videos somewhere other than a single phone.
Schedule digital letters to arrive on the day you chose, so the plan doesn’t depend on anyone remembering.

TrueKin was built for exactly this. You can save letters, scan photos, voice notes and video while you’re pregnant, then choose when your child receives each one: their 18th birthday, a specific date or a life moment like their wedding morning. On the day, they get an email with a private link that opens in any browser, no account or app needed. You can edit a letter or change its date at any point before it’s delivered, and your partner or the grandparents can add their own letters as co-writers. It’s one option among several; see how TrueKin compares to alternatives if you’re weighing them up.

What if writing feels hard right now?

Write less, not never. A three-line note is better than a perfect letter you never start. Pregnancy can bring anxiety, sickness or grief alongside the joy, and you don’t have to perform happiness on the page.

If you’re pregnant after a loss, many parents find it helps to be honest in the letter about being cautious, and about the sibling who came before. If the pregnancy is hard physically, voice notes take less energy than writing. And if you simply don’t know what to say, open with “Today I…” and describe one ordinary thing. Your child will treasure the ordinary things.

You don’t need the right words. You need the true ones, written down before you forget them.

Step by step

Set a simple rhythm. Plan one short letter per trimester, or one a month, so the habit fits around tiredness and appointments.
Start with the news. Write your first letter about how you found out you were pregnant, while the details are still fresh.
Use a prompt each time. Pick one prompt from the trimester list below and answer it honestly in 150 to 400 words.
Add small artifacts. Keep a scan photo, a voice note of the heartbeat appointment or a recording of you reading the letter aloud.
Write a final letter before the birth. In the last weeks, write what you imagine the day will be like and what you want them to know first.
Decide when they’ll receive it. Choose a milestone such as their 18th birthday or the day they become a parent, and store or schedule the letters for that day.

Frequently asked questions

How do I write a letter to my unborn baby?

Start with the date and how many weeks pregnant you are, then write about one thing: how you found out, how you feel this week, or what you hope for them. Keep it 150 to 400 words, write the way you talk, and aim for one short letter per trimester rather than one perfect letter.

What should a dad write in a letter to his unborn baby?

A dad can describe the moment he found out, the first scan or first kick he felt, who he is right now, and a simple promise to his child. Plain and honest works better than poetic. Specific details, like what he cooked or read that week, make the letter feel real years later.

When should I give my child the letters I wrote while pregnant?

Common choices are their 13th or 18th birthday, their wedding morning, or the day they find out they’re becoming a parent. Some families give one pregnancy letter each birthday. Pick a moment when your child is old enough to understand the feelings in the letter.

How many letters should I write during pregnancy?

There’s no set number. One letter per trimester, plus one written just before the birth, gives your child four letters that tell the whole story. If you enjoy it, a short letter each month works well too. Consistency matters more than length.

Is it weird to write letters to a baby that isn’t born yet?

Not at all. Many parents write to their baby during pregnancy, and it’s a common way to bond, process feelings and record details that fade quickly after birth. Your child will likely see it as one of the most personal things you could leave them.

Can I record a voice note instead of writing a letter to my unborn baby?

Yes. Voice notes capture how you sounded while you waited for them, which a written page can’t. Read your letter aloud or simply talk to the bump. Store the recording somewhere backed up, or schedule it to be delivered with your written letters later.

Published October 21, 2026