About this calculator
This contraction pattern checker summarizes the average spacing, duration, and consistency of contractions. It can help you describe the pattern when calling your maternity unit or clinician.
It does not diagnose labor. Always follow your local maternity instructions, especially for preterm pregnancy, twins, prior C-section, high-risk pregnancy, bleeding, water breaking, decreased fetal movement, or severe pain.
Uses patient-education guidance that true labor contractions are regular, get closer together, and often warrant calling a maternity unit when they are about every 5 minutes or more often and last about 60 seconds. Local instructions may differ.
Activated — labor pattern education
Contraction timing does not diagnose labor, fetal distress, membrane rupture, bleeding, or pregnancy emergencies.
Formula and method
The tool checks whether average spacing is ≤5 minutes, average duration is ≥60 seconds, and the pattern has persisted for at least 60 minutes, while overriding with urgent-call messages for red flags or preterm gestation.
Limitations and when not to rely on this result
- Contraction timing does not diagnose labor, fetal distress, membrane rupture, bleeding, or pregnancy emergencies.
- Follow your maternity unit’s instructions, especially before 37 weeks, with decreased fetal movement, bleeding, severe pain, fever, or fluid leakage.
- Use this page only as a timing aid.
Frequently asked questions
What does 5-1-1 mean? +
It commonly means contractions about 5 minutes apart, lasting about 1 minute, for about 1 hour. Some maternity units use different thresholds.
When should I call urgently? +
Call urgently for bleeding, severe pain, decreased fetal movement, water breaking, preterm contractions, high-risk pregnancy, or if you are worried.
How do I time contractions? +
Measure from the start of one contraction to the start of the next for spacing, and from start to end for duration.
Can false labor look regular? +
It can. True labor usually becomes stronger, longer, and closer together over time, but clinical assessment may still be needed.
Can this tell me when to go to hospital? +
No. It gives a pattern summary only. Use your maternity unit’s instructions and call for individualized advice.