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Contraction Timer & Labor Progress Calculator
Track contraction timing, duration, and frequency. Estimate labor stage progression with visual charts and logs.
Contraction Timer
Tap "Start Contraction" when a contraction begins, then tap again when it ends.
| # | Start Time | Duration | Interval | Time |
|---|---|---|---|---|
| No contractions recorded yet. Start timing to see data here. | ||||
Understanding Labor Contractions
Labor contractions are the periodic tightening and relaxing of the uterine muscle, which help to dilate the cervix and move the baby through the birth canal. Tracking your contractions can help you identify when you're entering active labor and when it might be time to go to the hospital or birth center.
How to Use This Calculator
1. Tap "Start Contraction" when you feel a contraction beginning.
2. Tap it again when the contraction ends (the button will change to "End Contraction").
3. The calculator will automatically record the duration and time since your last contraction.
4. Watch the charts and statistics to identify patterns in your labor progression.
Labor Stages Explained
Early Labor: Contractions are typically 30-45 seconds long, 5-30 minutes apart. This stage can last several hours or even days.
Active Labor: Contractions become longer (45-60 seconds), stronger, and closer together (3-5 minutes). Cervix dilates from about 3-4 cm to 7 cm.
Transition: Contractions are intense, 60-90 seconds long, and 2-3 minutes apart. This is the final phase before pushing, with cervix dilating to 10 cm.
When to Contact Your Healthcare Provider
• Contractions are 5 minutes apart, lasting 60 seconds, for at least one hour (5-1-1 rule for first-time mothers)
• Contractions are 3-4 minutes apart, lasting 60-90 seconds (for subsequent pregnancies)
• Your water breaks (even without contractions)
• You experience heavy bleeding or severe pain between contractions
• You notice decreased fetal movement
Frequently Asked Questions
The estimation is based on general medical guidelines for contraction patterns. However, every labor is unique, and you should always follow the advice of your healthcare provider over this calculator.
Duration is how long each contraction lasts (from start to finish). Interval is the time from the start of one contraction to the start of the next contraction.
Frequency helps identify labor progression patterns. Regular, increasingly closer contractions typically indicate active labor, while irregular spacing may mean you're still in early labor or experiencing Braxton Hicks contractions.
Yes, tracking Braxton Hicks can help you distinguish them from true labor contractions. True labor contractions typically become longer, stronger, and closer together over time, while Braxton Hicks remain irregular.
Yes, the calculator uses your browser's local storage to save your session. Your data should persist if you accidentally close the tab or browser.
It's not uncommon for early labor contractions to start and stop. Try changing positions, walking, resting, or hydrating. If you're in active labor and contractions stop completely, contact your healthcare provider.
Important Medical Disclaimer
This contraction timer is for informational and educational purposes only. It is not a medical device and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult with your healthcare provider regarding any questions about your pregnancy or labor. If you believe you are in labor or are experiencing a medical emergency, contact your healthcare provider or emergency services immediately.
This calculator does not diagnose labor stages but provides estimates based on general guidelines. Individual labor experiences vary significantly.
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