Compare calculators

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

Pregnancy Due Date Calculator

Estimate your due date and current pregnancy week from how many days ago your last menstrual period started, your average cycle length, and the dating method. A quick projection your OB-GYN will refine with early ultrasound.

Days Since Last Period (days)

Average Cycle Length (days)

Calculation Method

First Pregnancy

Fill in the required fields to see your result.

Fitness

Protein Intake Calculator

Estimate daily protein need (grams) from body weight, training intensity, and goal (maintain, build, or lose weight). Targets evidence-based ranges for active people: 1.2–2.2 g protein per kg body weight depending on activity and objective.

Weight (kg)

Activity Level

Goal

Fill in the required fields to see your result.

Key differences

	Pregnancy Due Date Calculator	Protein Intake Calculator
Category	Health	Fitness
Inputs required	4	3
Result	Due Date & Current Week	Daily Protein Needed (g)
What it does	Estimate your due date and current pregnancy week from how many days ago your last menstrual period started, your average cycle length, and the dating method. A quick projection your OB-GYN will refine with early ultrasound.	Estimate daily protein need (grams) from body weight, training intensity, and goal (maintain, build, or lose weight). Targets evidence-based ranges for active people: 1.2–2.2 g protein per kg body weight depending on activity and objective.