How to Use a Contraction Timer During Labour

Learn how to use a contraction timer to accurately track your labour, understand when to call your midwife, and feel more in control of your birth experience.

As you near the end of your pregnancy, you might feel a mixture of excitement and anticipation. One of the biggest questions on your mind is likely, “How will I know when I’m in labour?” While every labour is unique, one of the most reliable signs that things are progressing is a regular pattern of contractions. Learning how to time these contractions is a key skill that can help you feel more prepared and in control.

Timing contractions helps you and your care team understand what stage of labour you’re in. It provides objective information that tells your midwife or doctor whether it’s time to head to the hospital or birth centre, or if you’re still in the early stages where you’re most comfortable at home. In the past, this meant watching a clock and scribbling on a notepad, but now a simple tool can do the hard work for you.

Using a contraction timer takes the guesswork out of the process, allowing you and your support person to focus on what’s most important: your comfort and coping strategies. This guide will walk you through exactly how to use a contraction timer, what the numbers mean, and when it’s time to make the call.

Why this matters

In the final weeks of pregnancy, you might experience practice contractions known as Braxton Hicks. These can feel like a tightening or hardening of your belly, but they are usually irregular, don't get stronger over time, and often ease up if you change position or have a glass of water. True labour contractions are different. They will eventually establish a pattern, becoming stronger, lasting longer, and getting closer together. Timing them is the best way to see this pattern emerge.

Here’s why taking the time to track your contractions is so valuable:

It provides clear information for your care team. When you call your midwife or hospital, they will ask you about the frequency and duration of your contractions. Being able to say, “They’ve been coming every five minutes, lasting for a minute each, for the last hour,” gives them the precise information they need to advise you.
It helps you know when to go to the hospital. Arriving at the hospital in active, established labour often leads to a more positive experience. Timing your contractions helps you stay home where you’re comfortable during the early phase and head in when labour is more advanced.
It can reduce anxiety. Having a task to focus on can be a great distraction during early labour. It gives you and your support person a clear role and helps you feel more grounded and in control of the situation. It turns an unknown feeling into measurable data.
It helps you conserve energy. Early labour can be long. Knowing that your contractions are still far apart can be a good reminder to rest, eat, and hydrate, saving your energy for the more intense, active phase to come. You might use this time to finalise your hospital bag checklist or review your preferences in your Birth Plan Builder.

How the Contraction Timer works

A contraction timer is a simple tool designed to measure two key things: how long your contractions are and how often they are happening. Understanding these two measurements is the first step to making sense of your labour pattern.

Contraction Duration

This is how long a single contraction lasts, measured from the moment it begins to the moment it completely ends. In early labour, contractions might only last for 30-40 seconds. As labour progresses, they will lengthen, often lasting 60-90 seconds in the active phase.

Contraction Frequency

This measures how often your contractions are occurring. It is always measured from the start of one contraction to the start of the next one. For example, if you have a contraction that starts at 10:00 am and the next one starts at 10:10 am, your contractions are 10 minutes apart. The time in between contractions is your rest period.

Our Contraction Timer logs both duration and frequency for you automatically. Each time you time a contraction, it adds it to a list. Over an hour or two, this list will show you a clear pattern. The goal is to see if the duration is getting longer while the frequency is getting shorter. This is the classic sign that you are moving from early labour into active labour.

Step-by-step guide to using a contraction timer

When you first suspect you might be in labour, it can be tempting to start timing every single twinge. It’s often better to wait until the tightenings become more noticeable and you can’t easily talk through them. Here is a step-by-step guide to get you started.

Open the tool. Have our free Contraction Timer open on your phone or computer. If you have a support person with you, this is a perfect job for them to manage so you can focus on your body.
Wait for a contraction to start. Tune into your body. A labour contraction often starts as a dull ache in your back that wraps around to the front, or as a tightening that begins at the top of your uterus and spreads downwards. Your whole belly will feel hard to the touch.
Press “Start Contraction”. The very moment you feel the contraction begin, tap the start button. Don’t wait until it’s at its peak; you want to capture the entire duration from the very beginning.
Breathe and cope. Now, put the phone down and focus on your coping strategies. This could be slow, deep breathing, swaying your hips, leaning on your partner, or listening to music. The timer is working in the background, so you don’t need to watch it.
Press “Stop Contraction”. Once the wave of the contraction has passed completely and your belly feels soft again, tap the stop button. The tool will log the duration of that contraction.
Rest and recover. The timer will now automatically begin counting the time until your next contraction starts. This is your rest period. Use it to relax, sip some water, and change positions.
Repeat the process. When the next contraction begins, tap “Start Contraction” again. The tool will automatically save the frequency (the time from the start of the last one to the start of this new one) and begin timing the duration of the current contraction.
Look for a pattern. After timing for about an hour, look at the history the timer has created. Is there a clear pattern? Are the contractions gradually getting longer (duration) and closer together (frequency)? This is the key information your midwife will need. If the pattern is still irregular, you are likely still in early labour and can continue to rest and wait.

Common mistakes (and how to fix them)

Using a contraction timer is straightforward, but it's easy to make a few common mistakes, especially when you're distracted by the intensity of labour. Here’s what to watch out for.

Mistake: Timing from the wrong points

The problem: Many people mistakenly time the frequency from the end of one contraction to the start of the next. This measures your rest period, not the frequency, which can lead to confusion when you talk to your midwife.

The fix: Remember that frequency is always measured from the start of one contraction to the start of the next. A good contraction timer does this for you automatically. All you need to do is press start when a contraction begins and stop when it ends. The tool handles the rest.

Mistake: Panicking and calling too early

The problem: After two or three strong contractions, you might feel like it’s time to rush to the hospital. However, labour can sometimes start and then slow down again, especially in the early stages.

The fix: Try to time your contractions for at least a full hour before making a decision. This gives you enough data to see if a consistent pattern is truly established. Labour is a marathon, not a sprint. Our Labour Ready Planner can help you understand the different stages and what to expect from each one.

Mistake: Focusing only on the timer

The problem: It's easy to become so focused on the numbers on the screen that you forget to pay attention to other important signs from your body.

The fix: The timer is just one piece of the puzzle. Also pay attention to your other symptoms. Has your water broken? Have you had a bloody show? Most importantly, are you still feeling your baby move as normal? Any changes to your baby's movements should be reported to your midwife immediately. Using a Baby Movements Counter throughout your third trimester can help you get to know your baby's unique pattern.

Mistake: Not letting your support person help

The problem: The birthing person tries to manage the timer, their breathing, and their comfort all at once, which can feel overwhelming.

The fix: Delegate! Your support person’s role is to support you. Handing over the job of timing contractions is a practical way they can help. This frees you up to tune into your body, find comfortable positions, and focus completely on coping with each wave as it comes.

When to seek professional advice

The most common question people have is, “When should I call the hospital?” A widely used guideline for first-time parents is the 5-1-1 Rule.

You should call your midwife or hospital when your contractions are:

Coming every 5 minutes (frequency)
Lasting for 1 minute (duration)
And this pattern has been consistent for at least 1 hour

Important: This is a general guideline. Your care team may give you different advice based on your individual situation. For example, if this is not your first baby, labour may progress more quickly, and they might advise you to call sooner (e.g., when contractions are 7-10 minutes apart). The same applies if you live far from your hospital, have a planned VBAC (vaginal birth after caesarean), or have a high-risk pregnancy. Always follow the specific instructions given to you by your midwife or doctor.

When to call immediately

Regardless of what your contractions are doing, you should call your midwife or hospital's maternity unit right away if you experience any of the following:

Your waters break. Take note of the time, the colour, and the amount of fluid. If the fluid is greenish, brown, or has a bad smell, it’s essential to let them know straight away.
You have bright red vaginal bleeding. This is different from the small amount of blood-tinged mucus known as a 'show'. Heavy bleeding needs immediate attention.
You notice a change in your baby's movements. If your baby is moving less than usual or you notice a frantic, sudden change in movements, do not wait. Call your maternity unit immediately.
You feel unwell. This could include a fever, a severe and persistent headache, blurred vision or seeing spots, or sudden swelling in your face, hands or feet.
You are in constant, severe pain. Labour contractions come and go, giving you a rest period in between. If you are experiencing intense pain that does not ease up, you need to be assessed.
You feel an urge to push. If you suddenly feel strong rectal pressure or an overwhelming urge to bear down, especially if you have a history of fast labours, call for urgent advice. In an emergency, call for an ambulance (000 in Australia).

Try the free tracker

Feeling more confident about what to expect? Our free Contraction Timer is a simple, effective tool to help you accurately track your labour's progress. It’s easy to use on any device and requires no account or login. You can start using it the moment you think labour has begun, helping you feel prepared and informed on your journey to meeting your baby.

Related Parenting Hub resources

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