Cervix Dilation Chart: How to Track Your Progress During Labor

How dilated am I?

How do I check dilation at home?

How long until baby’s here?

Let’s face it, labor can feel like a total mystery.

Your body’s working hard, but what exactly is happening down there?

Never fear, mama, we’ve got your back, with our full breakdown of cervical dilation, including a handy cervix dilation chart.

Here’s all the info, so you know what to expect when baby’s on their way.

In this article: 📝

What is cervical dilation?

Cervical dilation during labor is when your cervix opens up wide enough for baby to make their grand entrance. [1]

During pregnancy, your cervix ‘closes’, to keep baby safe in your womb.

But when labor comes around, it’s party time — your cervix needs to open wide enough for baby to fit through.

As you get closer to labor and birth, your cervix will also start to efface — that’s when it goes thinner, to make it easier for baby to pass through your vagina.

Labor isn’t the only time cervical dilation can happen, though — people can also experience cervix dilation during pregnancy loss, abortion, and can be induced for some gynecological surgeries. [2,3,4]

Your cervix even dilates a little during your period — by about 1cm, to allow your menstrual blood to flow out each cycle. [5]

🤰 Be prepared: Preparing for Childbirth: 38 Tips on How to Prepare for Labor

Cervical dilation chart

If you’re in your third trimester, labor’s probably taking up a lot of mental real estate — hey, it’s a pretty big deal.

So it’s natural to wonder what’s going on down there.

After all, what does 10cms dilated even look like?

Well, here’s your handy breakdown:

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Stages of cervical dilation

Your cervix dilates in stages — right from 1cm to pushing time, so let’s break it down.

But bear in mind, these are just a general guideline — every birthing journey is unique.

Latent phase (AKA early phase)

• Dilation: 0 to 4 cms
• Contractions: They’ll be mild and irregular — your body’s getting ready.
• How it feels: You might feel some cramping or backache, but it’s generally manageable. This is a great time to relax, breathe, and maybe catch up on that to-be-read pile.

Active phase

• Dilation: 4 to 7 cms
• Contractions: They get stronger, longer, and closer together.
• How it feels: Now things are picking up steam! You might feel more intense pain, but remember, these contractions are helping your cervix open. Deep breaths can help manage the pain — trust us.

Transition phase

• Dilation: 7 to 10 cms
• Contractions: Intense and frequent. You might feel like you need to push, but hold on tight, mama
• How it feels: The home stretch! This can be the most challenging part. Focus on your breathing and trust your body’s incredible strength.

➡️ What to expect: What are the 4 Stages of Labor?

Tips for tracking your cervical dilation at home

First things first, there’s a whole lotta info out there, and some of it can be a tad… well, intense.

Checking dilation at home can be done, but it’s not always the most reliable method.

Here’s why:

• Your cervix is way up there, and feeling it accurately is tricky, even if you know what to feel for. It takes practice, and even then, there’s room for error.
• Inserting anything to your vaginal canal can introduce bacteria, which is less than ideal when you’re at the end of your pregnancy.
• Dilation is a gradual process. Obsessing over every centimeter can be a recipe for anxiety.

But if you’re still keen to explore, here’s the lowdown:

• Cleanliness is key: Wash those hands like you’re scrubbing in for surgery — no infections, please!
• Find a position that works for you, like squatting or propping a leg up. Try to relax, if you can — tension can make this whole thing that bit trickier.
• The fingertip test: Gently insert your fingers and see if you can feel your cervix. It’ll feel firm and round, kind of like your nose. If a fingertip fits through the opening, that’s considered 1 centimeter dilated.
• Be gentle: You don’t want to cause any bruising — your vaginal canal and cervix are going through a lot right now, so be as delicate as possible.
• You won’t get exact numbers when you DIY. This is just an estimate — don’t get hung up on exact numbers. Your doctor or midwife will be able to give you a better idea of how far along you are.
• Dilation isn’t the only indicator of labor: Dilation is just one sign of labor. Focus on the other clues your body’s sending — strong contractions, your water breaking, and that undeniable “go time” feeling.
• If in doubt, call your healthcare provider. They’re there to guide you through this.

👉 Find out more: How to Check Your Cervix Safely: Your Expert Guide

Can you feel yourself dilating?

Yes and no. You can’t really feel your cervix opening, but you can check your dilation using your fingers (although, TBH, it’s not accurate and can be unsafe if you’re doing it yourself).

The best trick to telling when it’s time to go to hospital (or time to call your midwife for a home birth) is to time your contractions.

If they’re 5 minutes apart, lasting around 1 minute each, for 1 hour consistently, then it’s go-time — the 5-1-1 Rule!

When to call your doctor during cervical dilation

Sometimes, it’s worth checking in with your healthcare provider when dilation happens earlier than expected, or if there are other factors.

These aren’t necessarily things to worry about — just things that need a medical professional to handle:

• Dilation or contractions under 37 weeks: If you’re feeling any signs of labor before 37 weeks (think contractions, cramping, your water breaking), call your doctor — early labor needs a medical pro on deck.
• The 5-1-1: Regular, strong contractions (think every 5 minutes or more often) are a sign labor’s getting serious. Give your doc a ring for guidance.
• Water breaking: Your water breaking can be a sign of labor, but it can also happen earlier. Call your doctor — they’ll want to check things out.
• Intense pain: Listen to your body, mama! If you’re experiencing intense or concerning pain that’s not managed by relaxation techniques, call your doctor.
• Reduced fetal movement: Feeling any less movement from your little tenant? Don’t hesitate to call your doctor — it’s always worth a check-up, just in case.
• Something feels off: Trust your gut! If anything feels strange or worries you during dilation, don’t wait — call your doctor

How many centimeters do you have to be dilated to go to the hospital?

Around 3-4cms is when it’s recommended to go to hospital, if you’re planning a hospital birth — when you’re in active labor.

But don’t worry, you don’t have to measure yourself!

You can use the 5-1-1 Rule to figure out when to go to hospital: when your contractions are 5 minutes apart, last 1 minute, and have been doing so for 1 hour.

👜 Get packing! What to Pack in Your Hospital Bag: Our Checklist

Cervical dilation FAQs

What week do you start dilating?

There’s no one-size-fits-all answer to that, mama!

Some mamas start dilating a little bit in the weeks leading up to their due date, usually after 37 weeks.

Others start dilating when labor kicks in.

It’s hard to predict when your cervix will start dilating, even if you’ve had kids before.

Is 1cm dilated at 38 weeks good?

Yes — it’s totally normal to be 1cm dilated at 38 weeks.

You could stay like that for a little while, or you could go from 1 to 10cms within a day — there’s no one way to take this journey!

And likewise, if you’re not 1cm dilated at 38 weeks, that’s fine, too.

If you get to 42 weeks with no signs of labor, it’s worth checking in with your doc — baby might need some persuasion to leave the place you’ve made so cozy for them over the past 9 months.

How long does it take to dilate from 1 to 10cms?

It depends — some mamas dilate in hours, while others take days from 1cm to pushing time.

On average, it can take about 1 hour per 2cm — around 6 to 12 hours from 1cm to 10cms dilated.

Can you dilate past 10 cm?

Possibly — your cervix doesn’t exactly have a measuring tape and just stop dilating at 10cms exactly.

But 10cms is the magic number for medical professionals when it comes to birthing babies.

Saying that, vaginal births can happen when the cervix is dilated less than 10cms, but that could result in tearing or surgical intervention.

🕐 Baby on the way? 5 Promising Signs That Labor is 24 to 48 Hours Away

Ultimately, when it comes to cervix dilation, there’s no set map to figure out how long it’ll be before baby’s in your arms.

But with the help of our handy cervix dilation chart, you should know a bit more about what to expect.

And if you want to chat with other moms-to-be who are in the same boat, or veteran moms who have been there and done that, you’re always welcome to join us on Peanut.

We’re having the conversation.