How to time contractions
Timing is often the birth partner’s first job. Here is how to time contractions, read the numbers, and know when to call.
Two numbers
- Length: from the start to the end of one contraction.
- Frequency: from the start of one contraction to the start of the next.
Step by step
- Note the time when a contraction starts.
- Note the time when it ends.
- Do this for several contractions in a row.
- Look at the average gap and length, not just one contraction.
The contraction timer does the maths for you.
What changes in labour
Real labour contractions become longer, stronger and closer together, and they do not stop when she rests or changes position.
Early labour at home
In the early phase, the NHS says you will probably be advised to stay at home. Moving around, drinks, small snacks, a warm bath and a back rub from the birth partner can help.
When to call
Follow your hospital’s advice. The NHS advises calling with regular contractions every 5 minutes or more often, and straight away for waters breaking, bleeding or less movement. Use the contraction timer.
Questions people ask
How long do contractions last?
They get longer, stronger and closer together as labour goes on. A contraction lasting longer than 2 minutes is a reason to call urgently (NHS).
Do you time contractions from the start or the end?
Time the length from start to end, and the gap from the start of one contraction to the start of the next.
How far apart should contractions be before we go in?
Call first, before you travel. The NHS advises calling your midwife or maternity unit when contractions come every 5 minutes or more often (NHS).
Why might the hospital send us home?
In early labour, the NHS says you will probably be advised to stay at home, and you may be sent back if you go in (NHS). Call again whenever you are worried.
What can the birth partner do in early labour?
Time the contractions, offer drinks and snacks, rub her back, and help her breathe and relax. Keep your phone charged.
Sources
- NHS: Signs that labour has begun · checked October 26, 2026