Contraction Timer

This is a simple tap-based interval timer. Tap the button each time an event occurs (a contraction during labor, a heartbeat tally, anything you want to time). The timer records the moment of each tap and computes:

• Time elapsed since the previous tap (the interval)
• Running average interval across all taps
• Implied frequency (events per minute)

For tracking labor contractions, hospitals typically want to know two things: the duration of each contraction (start to end) and the time between the start of one contraction and the start of the next. This timer measures the second number. If you want to track durations as well, tap once at start and once at end — the “interval” then alternates between contraction length and rest length.

The “5-1-1 rule” guideline: many providers ask patients to call when contractions are coming every 5 minutes, lasting at least 1 minute, for at least 1 hour. The interval column here directly supports the “every 5 minutes” check. The duration check requires the start-and-end tapping pattern described above.

The timer runs entirely in your browser. No data is sent anywhere. Refreshing the page clears the history. If you want to keep a record, screenshot or write down the times before navigating away.

Tips for accuracy:

• Use the same tap point each time (start of contraction, peak, or end — pick one and stick with it)
• A few seconds of variation between taps does not matter; trends matter more than individual readings
• The average updates with every new tap, so early readings are noisy and stabilize after 5-6 taps

Press “Tap to mark event” to begin. The first tap starts the session and shows just the time. Each subsequent tap adds a row to the table with the interval since the previous tap.