Pregnancy Due Date Calculator JavaScript Source Code

Description

Welcome to HappyCodex – your go-to source for ready-to-use, professional-grade web scripts. Whether you’re building a pregnancy care website, a medical platform, or simply looking to learn how to calculate pregnancy timelines with JavaScript, this Pregnancy Due Date Calculator is the perfect tool for you.

What Is This Script?

Our Pregnancy Due Date Calculator is a beautifully crafted, interactive web app designed to estimate a baby’s due date and track pregnancy milestones. Built using HTML, CSS, and JavaScript, this tool provides multiple input methods, a visual timeline, and personalized pregnancy advice — all in a clean, mobile-friendly interface.

✅ Fast setup
✅ Accurate medical logic
✅ Fully customizable for your brand or platform

Key Features

1. Multiple Calculation Methods

Estimate your due date using:

• Last Menstrual Period (LMP) (based on Naegele’s rule)
• Conception Date
• Ultrasound Gestational Age

2. Interactive Pregnancy Timeline

• Color-coded milestones: Ovulation, Trimester Starts, Anatomy Scan, Due Date
• Timeline adjusts dynamically based on input
• Highlights completed, current, and upcoming phases

3. Pregnancy Progress Tracker

• Progress bar with % completion
• Displays current pregnancy week & day
• Shows days remaining till the due date

4. Personalized Tips & Advice

• Trimester-specific recommendations
• General health tips for expecting moms
• Content updates based on current pregnancy stage

5. Modern & Responsive Design

• Clean, card-based layout
• Optimized for mobile, tablet, and desktop
• Smooth transitions and animations for better UX

Technologies Used

Frontend Stack:

• HTML5 – Structure and semantic layout
• CSS3 – Styling, layout, animations, media queries
• JavaScript – Interactive logic and calculations

Design Tools:

• Google Fonts (Poppins) – Clean, modern typography
• Font Awesome – Icon set for clarity and style
• CSS Grid & Flexbox – Flexible layout systems
• Custom Animations – Engaging transitions

How to Use This Script

1. Select a Calculation Method
   Choose LMP, Conception Date, or Ultrasound-based dating.

2. Enter Required Details

• LMP: First day of last period + cycle length
• Conception: Estimated date of conception
• Ultrasound: Date + gestational age (weeks/days)

1. Click “Calculate Due Date”
   Instantly get:

• Estimated Due Date
• Pregnancy Progress
• Trimester Breakdown
• Personalized Guidance

1. Explore Results

• Scroll through the interactive timeline
• Read actionable pregnancy tips
• View fetal development progress

1. Reset & Recalculate
   Ready for another calculation? Use the reset button to start over.

How to Run It?

It’s as simple as it gets:

1. Download the source code ZIP file from HappyCodex
2. Extract the files to your local machine
3. Open the index.html file in your browser — you’re good to go!

Perfect For:

• Health blogs
• Women’s health clinics
• Pregnancy & parenting platforms
• Medical education projects
• HTML & JS learners

Final Thoughts

At HappyCodex, we believe in making web development easier, faster, and smarter. This Pregnancy Due Date Calculator is medically inspired, developer-ready, and client-friendly — all wrapped into a simple plug-and-play JavaScript tool.

For customization or support, feel free to contact us or explore our Script Marketplace.