Log start times, end times, intensity, and notes. See averages, spacing shifts, and irregular patterns. Stay organized while discussing symptoms with your care team.
Use the responsive fields below. Large screens show three columns, medium screens show two, and mobile screens show one.
| Date | Start | End | Duration (min) | Interval From Previous (min) | Intensity | Relieved After Rest/Hydration | Notes |
|---|---|---|---|---|---|---|---|
| 2026-03-12 | 09:10 | 09:48 | 38.0 | — | 3 | Yes | Improved after water and left-side rest. |
| 2026-03-12 | 10:22 | 10:54 | 32.0 | 72.0 | 4 | Yes | Less noticeable after sitting down. |
| 2026-03-12 | 12:05 | 12:41 | 36.0 | 103.0 | 3 | Yes | Happened after walking longer than usual. |
| 2026-03-12 | 14:20 | 15:02 | 42.0 | 135.0 | 5 | No | Hydration helped only slightly. |
Episode Duration
Duration = End Time − Start Time
Average Duration
Average Duration = Sum of all durations ÷ Number of episodes
Interval From Previous
Interval = Current Start Time − Previous Start Time
Interval Irregularity
Coefficient of Variation = Standard Deviation of intervals ÷ Average interval × 100
Episodes Per Hour
Episodes Per Hour = Number of episodes ÷ Observation hours
Practice Pattern Score
Score = (Irregularity × 0.35) + (Relief Rate × 0.25) + (Lower Intensity Component × 0.20) + (Wider Spacing Component × 0.20)
Higher scores suggest a pattern that looks more scattered, more rest responsive, and less intense. The score is an informational summary only, not a diagnosis.
It summarizes duration, spacing, irregularity, intensity, relief rate, and overall pattern behavior. It helps you review trends and keep organized notes for discussions with your maternity clinician.
The interval is measured from one episode start time to the next episode start time. This shows whether tightening is scattered or becoming more evenly spaced.
A higher score means the pattern looks more irregular, less intense, more widely spaced, or more rest responsive. It is a trend marker, not proof of Braxton Hicks.
No. This tool cannot confirm labor or rule it out. It only organizes timing patterns and symptom notes. Clinical judgment is still essential.
Yes. If an end time is earlier than the start time, the calculator treats the end as the next day. That keeps overnight duration values usable.
Hydration and rest can change practice tightening patterns. Recording them helps you notice whether symptoms settle after simple measures and improves appointment conversations.
Contact your clinician promptly for fluid leakage, bleeding, severe pain, fever, reduced baby movement, or a tightening pattern that becomes more regular, stronger, or persistent.
You can export the summary metrics and logged episodes as CSV or PDF. That makes it easier to save records or share them during prenatal visits.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.