Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Contraction Timer Calculator

Track contraction duration, frequency, and pain level to estimate labor progress and determine when to head to the hospital. Useful during active labor for first-time and experienced mothers.

Average Contraction Duration (seconds)

Time Between Contractions (minutes)

Pattern Duration (hours)

Is This Your First Baby?

Pain Intensity Level

Fill in the required fields to see your result.

Pregnancy

Baby Size & Growth Calculator

Estimate your baby's weight at any point in pregnancy by entering gestational age and parental size. Useful at prenatal appointments to compare against ultrasound measurements.

Gestational Age (weeks)

Additional Days (days)

Measurement System

Parental Size Factor

Fill in the required fields to see your result.

Key differences

	Contraction Timer Calculator	Baby Size & Growth Calculator
Category	Pregnancy	Pregnancy
Inputs required	5	4
Result	Labor Progress Score (points)	Estimated Baby Weight (oz)
What it does	Track contraction duration, frequency, and pain level to estimate labor progress and determine when to head to the hospital. Useful during active labor for first-time and experienced mothers.	Estimate your baby's weight at any point in pregnancy by entering gestational age and parental size. Useful at prenatal appointments to compare against ultrasound measurements.