Pregnancy Tools
Contraction Timer — Track Labor Contractions
Time contraction duration and intervals with one tap. History log for labor patterns — free, private, browser-based. Not medical advice.
TL;DR: Contraction Timer: Measure contraction duration and intervals with history logs. Free in your browser on FYN Tools — use the panel above for instant results.
Reviewed by FYN Tools Editorial · Guides ·
Privacy & processing: Contraction data stays in your browser. Call your maternity unit per local guidance — this tool does not diagnose labor stage.
Contraction Timer
Time contraction duration and intervals with one tap. History log for labor patterns — free, private, browser-based. Not medical advice.
- Inputs
- Start/stop tap for each contraction
- Outputs
- Duration, time since last contraction, session history
- Processing
- Client-side (browser localStorage)
- Limits
- Educational timing aid only
Quick steps
- Tap start when a contraction begins.
- Tap stop when it ends.
- Review duration and interval history.
- Measure contraction duration
- Measure contraction intervals
- History logs
- Start stop timer
- Contraction counter
- Average interval calculation
- Labor progress tracking
- Export data
Data input / output
| Inputs | Start/stop tap for each contraction |
|---|---|
| Outputs | Duration, time since last contraction, session history |
| Formats | Timestamped log in browser |
| Limits | Educational timing aid only |
| Processing | Client-side (browser localStorage) |
How to Use the Contraction Timer
- Tap start when a contraction begins.
- Tap stop when it ends.
- Review duration and interval history.
What is a Contraction Timer?
Contraction Timer on FYN Tools measure contraction duration and intervals with history logs. Use the tool above — free, no account required.
Calendar and symptom tools vary by person. Use output for planning and prenatal discussions — not as diagnosis or emergency guidance.
Measure contraction duration and intervals with history logs.
How it works
Tap start when a contraction begins and stop when it ends. The tool records duration and calculates the gap since the previous contraction.
Explore more tools on our site.
Common Use Cases & Examples
- Pregnancy workflow: Measure contraction duration and intervals with history logs.
- Quick browser check: Use Contraction Timer once, then continue in your doc or app.
Input / Output Examples
Input
Start timer at first contraction → Stop at end → Repeat for next
Output
Interval and duration logged; pattern table shows time between contractions
Frequently Asked Questions
When should I go to the hospital?+
Follow your healthcare provider’s guidance. Many recommend going when contractions are regular and close together.
Can I save the timing logs?+
Your recent logs are kept in the session for quick reference.
Is this a medical device?+
No. It’s a helpful tool but does not replace medical advice.
Does it work on mobile?+
Yes, the timer is optimized for mobile use.
Key Features
- Measure contraction duration
- Measure contraction intervals
- History logs
- Start stop timer
- Contraction counter
- Average interval calculation
- Labor progress tracking
- Export data
Benefits
Free access with no signup for core features
Fast browser-based processing
Mobile-friendly layout
When to Use Contraction Timer
- During the third trimester when timing contractions or kick counts
- When your clinician asks for a printed or screenshot log
- On mobile at bedside — data stays in this browser session
Advantages
- Free access with no signup for core features
- Fast browser-based processing
- Mobile-friendly layout
- Clear how-to steps and FAQs on the same page
Tips
- Double-check units (currency, dates, measurements) before acting on results.
- Use a modern browser for best performance with canvas and file uploads.
- Contact a clinician if symptoms are severe or unusual — online tools cannot triage emergencies.
Common Mistakes
Using calendar predictions as contraception without clinician guidance
Ignoring severe symptoms because an app log looks normal
Expecting cloud backup when data is stored only in this browser
Summary
Use Contraction Timer above, then browse related pregnancy tools linked below.