Is This It? Timing Your Contractions to Know When Labor Is Real
You're approaching your due date, and suddenly your belly is getting tight and uncomfortable. Is this labor? Braxton-Hicks? Gas? The uncertainty is agonizing. This contraction timer helps you track when contractions start and stop, measure the duration and frequency, and determine whether you're experiencing false labor or the real thing. It guides you through the famous 5-1-1 rule to know when to head to your hospital or birthing center.
What This Calculator Does
This calculator helps you time contractions by recording when each one starts and ends. It tracks how long each contraction lasts, how much time passes between contractions, and shows you a pattern over time. As you enter data, the calculator evaluates whether your contractions fit the 5-1-1 rule (5 minutes apart, lasting 1 minute each, for at least 1 hour), the classic indicator that active labor has begun and it's time to go to the hospital.
How to Use This Calculator
When a contraction starts, note the time or tap "Start Contraction." When it ends, tap "End Contraction." The calculator records the duration. Wait for the next contraction to begin, and when it does, tap "Start Contraction" again. The calculator tracks the interval between contractions (the time from the end of one to the start of the next). As you log multiple contractions, the calculator shows you the pattern and evaluates it against the 5-1-1 rule.
You'll want your phone nearby during active labor to track this. Many phones have built-in timers; this calculator integrates contraction timing in one place.
Braxton-Hicks vs. Real Labor Contractions
Braxton-Hicks Contractions ("False Labor"):
Braxton-Hicks contractions are your uterus practicing for labor. They're normal, especially in the third trimester. They feel like tightening or hardening of the belly, and they come and go irregularly.
Characteristics:
Real Labor Contractions:
Real labor contractions are your uterus actively working to dilate your cervix and push your baby out. They follow a pattern and gradually intensify.
Characteristics:
The Confusion:
In the weeks and days before true labor, Braxton-Hicks can become more frequent and somewhat uncomfortable. This is called "prodromal labor", your body is preparing but not actually dilating. Prodromal labor can last for days. It's frustrating but not dangerous.
The 5-1-1 Rule: When to Go to the Hospital
The classic guidance for hospital arrival is the 5-1-1 rule:
5: Contractions are 5 minutes apart
1: Each contraction lasts 1 minute
1: This pattern has continued for at least 1 hour
When you meet the 5-1-1 rule, you're typically in active labor and it's time to go to the hospital or birthing center.
Working Example:
Time: 10:00 AM: Contraction starts
Time: 10:45 AM. Contraction starts (45 minutes since the last one started, so 45-minute interval)
Time: 11:31 AM: Contraction starts (46-minute interval)
Time: 12:14 PM: Contraction starts (43-minute interval)
This pattern doesn't meet 5-1-1 yet. The contractions are too far apart.
---
Later that day:
Time: 3:00 PM. Contraction starts, lasts 50 seconds
Time: 3:05 PM. Contraction starts, lasts 55 seconds
Time: 3:10 PM. Contraction starts, lasts 1 minute
Time: 3:15 PM. Contraction starts, lasts 1 minute
Time: 3:20 PM. Contraction starts, lasts 1 minute 5 seconds
Time: 4:00 PM. Contraction starts, lasts 1 minute
From 3:00 to 4:00 PM, you have regular 5-minute intervals and contractions lasting about 1 minute each. You've hit 5-1-1. Time to go to the hospital.
Adjusting the Rule for Your Situation
The 5-1-1 rule is a general guideline, but your specific situation might call for different timing:
First-time mothers: Stick close to the 5-1-1 rule. Early arrival means hours of labor at the hospital (which is boring but harmless). Coming in too late is riskier.
Subsequent pregnancies: Labor often progresses faster after your first baby. Many providers recommend earlier hospital arrival (maybe 6-1-1 instead of 5-1-1). Ask your provider for guidance.
Long distance to hospital: If you live far from your hospital or birthing center, discuss a modified rule with your provider. You might head in at 10-1-1 or 6-1-1 instead of 5-1-1.
Risk factors: If you have a high-risk pregnancy, your provider might recommend earlier arrival.
Rupture of membranes (your water breaking): Go to the hospital or birthing center immediately, regardless of whether you're having contractions. This is true even if contractions haven't started yet. (Most people go into labor within 24 hours of water breaking, but not always, and infection risk increases with time.)
Bleeding or other emergency signs: Heavy vaginal bleeding, severe abdominal pain, loss of vision, or other emergency symptoms warrant immediate hospital arrival. Don't wait for contractions.
Progressing Through Labor Phases
Labor typically progresses through three phases:
Latent Phase (Early Labor):
Active Phase:
Transition Phase:
Many labor experiences don't follow this neat progression. Some people skip phases, progress unevenly, or experience longer latent phases. That's okay, your provider will guide you.
Tips and Things to Watch Out For
Contraction timing doesn't have to be perfectly precise. You don't need sub-minute accuracy. Rounding to the nearest minute is fine. The pattern matters more than perfect precision.
Time from the start of one contraction to the start of the next. The "interval" between contractions is measured start-to-start, not end-to-end. This is what providers mean when they say "contractions 5 minutes apart."
Braxton-Hicks can intensify and confuse you. In the final weeks before labor, Braxton-Hicks can become strong enough to be uncomfortable. They can come every 5โ10 minutes. But if they stop when you move around, take a shower, or rest, they're not true labor. Real labor contractions continue.
You can be in early labor for a very long time. Early labor can last 12+ hours, especially for first-time mothers. You don't need to go to the hospital immediately once contractions start. Wait until they meet the 5-1-1 rule (or your provider's modified guidance).
Your provider might do a cervical exam to confirm dilation. Only your cervix knows the truth. Cervical exams can be uncomfortable, but they tell you definitively whether labor is progressing. If you're having strong contractions but little cervical change, you might be in prodromal labor (frustrating but temporary).
Induction of labor can cause different contraction patterns. If you're being induced (labor started artificially), your contractions might be closer together or more intense than spontaneous labor. Your provider will guide you on what to expect.
This calculator provides general information only. Always consult your OB-GYN, midwife, or pediatrician for medical guidance specific to your pregnancy and baby.
Frequently Asked Questions
What's the difference between start-to-start and end-to-end interval timing?
Start-to-start is the time from when one contraction begins to when the next one begins. End-to-end is the break between them. Healthcare providers use start-to-start. If contractions are 5 minutes apart (start-to-start) and last 1 minute each, you have 4 minutes of relief between them.
Should I go to the hospital if I'm having regular contractions before 5-1-1?
If your provider has given you specific guidance, follow that. Otherwise, early arrival is safe (you'll just spend extra time in the hospital), while arriving too late is risky. If you're uncertain, call your provider or the hospital and describe your contractions.
What if my contractions become irregular after a while?
Contractions sometimes slow down or become irregular, which suggests you might be in prodromal labor. Rest, hydrate, and wait to see if they pick up again. Prodromal labor is frustrating but harmless. It usually resolves into true labor within hours or days.
Can I get true labor contractions that aren't painful?
Some people have less painful contractions than others, but true labor contractions are generally noticeable and uncomfortable. If you're unsure whether what you're experiencing is true labor, call your provider. They can guide you or do a cervical exam.
What if I'm not tracking time accurately?
Rough estimates are fine. Your provider cares more about the overall pattern (getting closer together, lasting longer, more intense) than perfect timing. Do your best to track, but don't stress about being off by a minute or two.
Should I head to the hospital as soon as I think labor is starting?
Not necessarily. Early labor is long and there's no rush. Head in when contractions meet 5-1-1 (or when your provider recommends). Early arrival is safe, but it means more time at the hospital before active labor.
Related Calculators
Use our Due Date Calculator to know when you're approaching your due date and labor becomes likely. Our Pregnancy Week Calculator tells you exactly how far along you are, labor before 37 weeks is preterm and requires immediate hospital evaluation. Once your baby arrives, our Baby Sleep Calculator will help you understand how much rest your newborn needs.