BirthtideOnline contraction timer
Tap Start when a contraction begins and Stop when it eases. You see how long each one lasts and how far apart they are, measured from the start of one to the start of the next.
Ready when you are
0:00
Last 60 minutes
- Contractions
- 0
- Average duration
- —
- Average interval
- —
| No. | Started | Duration | Interval (start to start) |
|---|
Nothing recorded so far.
How to use it
- Tap Start when the tightening begins.
- Tap Stop when it eases. That is the duration.
- Tap Start again at the next one. The time between the two starts is the interval.
- Keep going for several contractions. One interval does not show a pattern; an hour of timings does.
What the numbers mean
Duration is how long one contraction lasts. Interval is how far apart they are, counted from the start of one to the start of the next, which is how care teams usually ask for it. The averages cover the contractions that started in the last 60 minutes. More in How to time contractions and The 5-1-1 rule.
Where your records are kept
In this browser, on this device. Nothing is sent to a server; there is no account and there are no ads. Records stay when you close the tab. Your browser can remove them if you clear site data, use a private window or do not come back to this page for a while.
When to call
This timer records the times you tap. It cannot tell you whether labor has started. Your midwife or doctor tells you when to call; call them whenever you are worried.
General information, not medical advice. Written by the developer of Birthtide; follow the advice of your midwife or doctor. Checked 11 November 2026.
Guides
- How to time contractionsMeasure duration and frequency the way care teams ask for it: frequency from the start of one contraction to the start of the next.
- The 5-1-1 rule for contractionsWhat 5-1-1, 4-1-1 and 3-1-1 mean, how to check them with a timer, and why your care team’s advice comes first.
- Baby movements and kick countingGet to know your baby’s usual pattern, how a kick count works if your care team asks for one, and when to call straight away.
- How to choose a contraction timer appNine things to check before labor: start-to-start timing, one-handed use, saving offline, no pop-ups, privacy, a rule you choose, reports for your midwife and the price.