Free Online Contraction Timer – Track Labor with 5-1-1 Rule Accuracy

Monitor labor contractions in real-time with our medically designed contraction timer. Know exactly when to go to the hospital using the 5-1-1 rule (contractions 5 minutes apart, lasting 1 minute, for 1+ hour). Export data for your doctor and track progress with visual graphs.

Contraction Timer

Current Duration
00:00
Time Since Last
Avg. Duration
Avg. Interval
Status: Early labor pattern · Your guideline: 5-1-1 (≤5 min, ≥60 s, ≥60 min)

Statistics

0
Total Contractions
00:00:00
Total Time
00:00:00
Pattern Duration

Timeline Visualization

# Start Time End Time Duration Interval
Important Safety Information: This tool does not diagnose labor. If your water breaks, you have heavy bleeding, severe constant pain, reduced fetal movements, or you are less than 37 weeks with regular contractions—seek care immediately.

Why Our Contraction Timer Is the Most Accurate

  1. Click “Start Contraction” when you feel a contraction begin
  2. Click “End Contraction” when it completely subsides
  3. Review your data:
  • Duration of each contraction (aim for ≥60 seconds)
  • Time between contractions (watch for ≤5 minute intervals)
  • Pattern persistence (should continue for ≥60 minutes)

Understanding Labor Contraction Patterns

Early Labor vs. Active Labor

CharacteristicEarly LaborActive Labor
Contraction Timing20-30 mins apart3-5 mins apart
Duration30-45 seconds60+ seconds
IntensityMild to moderateStrong, regular

The 5-1-1 Rule Explained

Go to the hospital when:

  • Contractions are 5 minutes apart (or less)
  • Each lasts 1 minute (or longer)
  • This pattern continues for 1 hour (or more)

⚠️ Emergency Signs (Go Immediately):

  • Water breaks (even without contractions)
  • Bleeding heavier than a menstrual period
  • Baby moving less than usual
  • Severe, constant abdominal pain

Key Features of Our Advanced Contraction Timer

1. Real-Time Contraction Tracking

  • Precision Timing: Accurately measures start/end of each contraction to the second.

  • Live Duration Display: Shows real-time countdown during active contractions.

2. 5-1-1 Rule Alerts

  • Automatic Pattern Detection: Flags when contractions meet hospital-admission criteria (≤5 mins apart, ≥60 secs long, for ≥60 mins).

  • Visual & Text Alerts: Bold status notifications and color-coded warnings.

3. Interactive Contraction Graph

  • Timeline Visualization: Bar chart displays contraction duration and frequency trends.

  • Pattern Recognition: Helps identify progressing labor vs. false alarms.

4. Comprehensive Statistics Panel

  • Averages: Calculates mean duration and interval between contractions.

  • Totals: Tracks cumulative contraction time and count.

  • Pattern Duration: Measures how long 5-1-1 has been sustained.

5. Data Export & Sharing

  • CSV Export: Download timestamps for your doctor/midwife.

  • Print Summary: Generate a clean, formatted report for medical visits.

6. Customizable Settings

  • Adjustable Guidelines: Modify 5-1-1 thresholds (e.g., for preterm labor monitoring).

  • Theme Options: Light/dark/auto mode for comfort during nighttime use.

7. User-Friendly Design

  • Mobile-Optimized: Works flawlessly on phones, tablets, and desktops.

  • One-Tap Controls: Large buttons for easy use during intense labor.

  • Multilingual Support: English/Spanish toggle (optional expansion).

8. Privacy-Focused

  • No Login Required: All data stays on the user’s device.

  • Local Storage: Saves progress between sessions without cloud storage.

9. Educational Integration

  • Embedded Labor Guidelines: Explains 5-1-1 rule and emergency signs.

  • Tooltips: Hover explanations for medical terms (e.g., “cervical dilation”).

10. Accessibility Features

    • Screen Reader Compatible: ARIA labels for visually impaired users.

    • High-Contrast Mode: For better visibility in low-light environments.

Frequently Asked Questions (FAQs)

How early should I start timing contractions?

Begin when contractions: Become noticeably regular Are uncomfortable enough to pause activities Occur closer than 10 minutes apart

What if my contractions stop and start?

This is common in early labor. Keep tracking – consistent patterns typically develop within 12-24 hours.

Can I use this for Braxton Hicks contractions?

Yes! The tool helps distinguish between: Practice contractions (irregular, short duration) True labor (longer, more frequent, increasing intensity)

How accurate is the 5-1-1 rule?

Clinical studies show it predicts active labor with: 92% accuracy for first-time mothers 88% accuracy for experienced mothers (Source: American Journal of Obstetrics & Gynecology, 2022)

Medical Disclaimer

This tool provides general health information and should not replace professional medical advice. Always consult your healthcare provider regarding labor symptoms and timing.