Contraction Timer

Complete Contraction Timer Guide 2025

As labor approaches, one of the most useful things you can do is track your contractions, since their duration and how close together they are happening are two of the main signs your care provider will ask about. Trying to time contractions on a phone stopwatch while also writing down times on paper is stressful and easy to get wrong, especially as contractions become more intense.

Our Contraction Timer makes this simple. Tap start when a contraction begins and stop when it ends, and the tool automatically logs the start time, duration, and how far apart each contraction is from the last one, along with running averages. It is free, works on any device, and needs no sign-up. Everything stays in your browser during your session.

Why Timing Matters

Care providers ask about contraction timing because the pattern, how close together and how long each one lasts, gives useful clues about how labor is progressing. A steady move from irregular, shorter contractions toward regular, longer and closer contractions is one of the classic signs of active labor. Having an accurate, written log ready when you call your provider makes that conversation faster and clearer, especially if you are anxious or in pain and find it hard to estimate times from memory.

What Are Contractions?

Contractions are the tightening and releasing of the uterine muscles that help open (dilate) the cervix and move the baby down the birth canal during labor. Contractions are usually described by two key measurements:

• Duration: how long each individual contraction lasts, from when it starts to when it ends.
• Frequency: how much time passes from the start of one contraction to the start of the next.

How to Use This Contraction Timer

1. When you feel a contraction begin, tap Start Contraction.
2. When the contraction ends, tap the same button, now labeled Stop.
3. The contraction is automatically added to your log, showing its start time and duration.
4. The frequency column shows the time from the start of that contraction to the start of the previous one.
5. Check the Session Summary panel for running averages of duration and frequency.
6. Use Clear Log to start a fresh session, for example at the start of a new day or stage of labor.

What Does Each Column in the Log Mean?

Column	What It Shows
#	The order this contraction was recorded in your session
Start Time	The clock time you tapped Start
Duration	How long that single contraction lasted, from Start to Stop
Frequency	The time from the start of this contraction to the start of the previous one

Frequency is always measured start-to-start, not end-to-start, because this is the standard way most care providers ask about and record contraction patterns.

The 5-1-1 Rule

A commonly shared general guideline in many childbirth education programs is the 5-1-1 rule: contractions coming about 5 minutes apart, each lasting about 1 minute, consistently for at least 1 hour, are often suggested as a signal that it may be time to head to the hospital or call your provider. Some providers use a 4-1-1 or other variation instead.

Typical Labor Stages and Contraction Patterns

Stage	Typical Frequency	Typical Duration
Early Labor	Every 5-30 minutes	30-45 seconds
Active Labor	Every 3-5 minutes	45-60 seconds
Transition	Every 2-3 minutes	60-90 seconds

These ranges are general patterns, not fixed rules. Every labor is different, and some people experience irregular timing throughout. Your provider is the best judge of how your specific pattern relates to your stage of labor.

Preparing for Active Labor: A Short Checklist

• Confirm with your provider ahead of time exactly which pattern (5-1-1 or their own version) they want you to watch for.
• Know your hospital or birth center's preferred route and roughly how long travel takes.
• Have your hospital bag, ID and insurance details ready in advance.
• Keep your phone charged and easily reachable so you can time contractions and make calls without delay.
• Identify a support person who can help operate this timer and communicate with your provider if needed.

Contractions vs. Braxton Hicks

Braxton Hicks contractions, sometimes called "practice contractions," can happen throughout the third trimester and are usually irregular, do not get progressively stronger, and often ease with rest, movement, or hydration. True labor contractions tend to become more regular, more intense, and closer together over time, and do not go away with rest. This tool can help you notice whether a pattern is becoming more regular, which is one of the clues used to tell the two apart, though your provider should confirm what you are experiencing.

When to Contact Your Provider or Go to the Hospital

• Contractions matching the pattern your provider gave you (such as the 5-1-1 rule or their own guidance).
• Your water breaks, whether or not contractions have started.
• Heavy bleeding, severe pain, or reduced fetal movement.
• Any symptom your provider has told you to watch for during your specific pregnancy.
• You are simply unsure. It is always reasonable to call and ask.

Common Mistakes When Timing Contractions

1. Timing Only the Painful Part

Contractions often build up gradually and ease off gradually too. Try to capture the full tightening sensation, not just the most intense middle portion, for a more accurate duration.

2. Confusing Frequency with Duration

Frequency (how far apart) and duration (how long each one lasts) are two separate numbers. Both matter, and mixing them up when describing your pattern to a provider can cause confusion.

3. Stopping Too Early to Call

A single contraction matching a target pattern is not the same as a sustained pattern over an hour. Keep tracking for the full recommended window before assuming it is time to go.

4. Relying on Memory Instead of a Log

As labor progresses, it becomes much harder to accurately recall timing from memory. A running, automatic log removes that guesswork.

Tips for Timing Contractions Accurately

• Time from the true start of the tightening sensation, not when it becomes uncomfortable.
• Stay consistent about what counts as "start" and "end" throughout your session.
• Have a support person help once contractions are frequent and intense, so you can focus on breathing and coping.
• Note the log before calling your provider, so you can describe the pattern clearly and accurately.

Conclusion

Timing contractions accurately gives you and your care team clear, useful information during one of the most important moments of pregnancy. Use this timer to log each contraction automatically, watch your averages update in real time, and combine that information with your provider's specific guidance to know when it is time to call or go in.