Contraction Timer

Track the duration and frequency of labor contractions.

Press "Start Contraction" when one begins, and "Stop Contraction" when it ends.

Contraction Log

Start Time Duration Frequency (Since Last Start)
No contractions logged yet.

Summary data will appear here after several contractions.

Timing Labor Contractions

As labor begins or progresses, tracking uterine contractions – their duration (how long each one lasts) and frequency (how often they occur) – becomes important. This information helps you and your healthcare provider gauge labor progress and decide when it might be time to head to the hospital or birth center.

How to Use the Timer

  1. When a contraction starts, click the **"Start Contraction"** button. The button text will change to "Stop Contraction", and a timer will begin for the current contraction's duration.
  2. When the contraction ends, click the **"Stop Contraction"** button.
  3. The calculator will automatically log the contraction's Start Time and Duration.
  4. It will also calculate the **Frequency**, which is the time from the *start* of the current contraction to the *start* of the *previous* one.
  5. Repeat this process for each contraction.
  6. The log below the timer will keep a record of your contractions.
  7. After logging several contractions, a summary showing average duration and frequency may appear.
  8. Use the **"Reset Log"** button to clear all logged data and start fresh.

Understanding Duration & Frequency

  • Duration: Measured from the beginning to the end of a single contraction (usually in seconds).
  • Frequency: Measured from the beginning of one contraction to the beginning of the next one (usually in minutes).

When to Call Your Doctor/Midwife or Go In

Guidelines vary, but a common rule (especially for first-time mothers) is the **"5-1-1 Rule"** or **"4-1-1 Rule"**:

  • Contractions are coming every **5** (or **4**) minutes apart.
  • Each contraction lasts for **1** minute (60 seconds).
  • This pattern has continued for **1** hour.

ALWAYS follow the specific instructions given to you by your healthcare provider.** They will provide guidance based on your individual situation (first baby vs. subsequent, risk factors, distance from hospital, etc.). This timer is a tool to help you gather information to share with them.