OB Wheel

Contraction timer

Time your contractions with two taps. The timer tracks how long each lasts and how far apart they are, all in your browser — nothing is saved or sent.

This is not a medical device and can’t tell you when to go in. Follow the guidance your midwife or doctor gave you. If you’re worried, in severe pain, bleeding, notice reduced movements, or your waters break — contact your provider now, whatever the timer shows.

Tap “Start” when a contraction begins.

#StartLengthFrequency

How to use it

1 Tap Start as itbegins 2 Tap Stop as it ends 3 Repeat eachcontraction 4 Follow yourprovider’s advice
  1. Tap “Start” when a contraction begins. A live counter shows how long the current contraction has lasted.
  2. Tap “Stop” when it ends. The contraction is added to the log with its length.
  3. Keep going. As you log more, the tool shows your average length and frequency over recent contractions.
  4. Watch the pattern — but trust your provider. If contractions settle into a close, regular pattern, the tool will note it. The decision to go in is always your provider’s guidance, not the timer’s.

Reading the numbers

Length (duration) is how long a contraction lasts. Frequency is measured from the start of one contraction to the start of the next. As labour progresses, contractions typically get longer, stronger and closer together — but every labour is different, which is why your provider’s instructions matter more than any single rule of thumb.

Frequently asked questions

How do I time contractions?

Tap Start when a contraction begins and Stop when it ends. The timer records each one's length and the frequency — the time from the start of one contraction to the start of the next.

What does 5-1-1 mean?

It's a common guide: contractions about 5 minutes apart, each lasting about 1 minute, continuing for at least 1 hour. Many providers use it as a sign to make contact, but always follow the specific advice you were given.

When should I go to the hospital?

This timer can't tell you that — the right threshold depends on your pregnancy and your provider's instructions. If you're unsure, in a lot of pain, or have bleeding, reduced movements or waters breaking, contact your provider now.

Is my timing data saved?

No. Everything stays in your browser and is cleared when you reset or leave the page. Nothing is sent anywhere, so you can use it privately.

What's the difference between frequency and duration?

Duration is how long a contraction lasts. Frequency is how far apart they are, measured from the start of one to the start of the next — so it includes the contraction plus the rest before the following one.