Categories

Pregnancy Calculator

Files stay on your device · 100% private Runs in your browser

Estimated due date and current pregnancy week from your last period or conception date.

How it works: Naegele's rule — the due date lands 280 days after the first day of the last period, or 266 days after conception. The week counter follows gestational age from the last period and tracks your progress through the trimesters.
Pick a date to estimate the due date.

Related Tools

All Generators tools

Age Calculator

Calculate exact age, zodiac sign, and birthday countdown.

Credit Card Payoff Calculator

How long a card balance takes to clear at a fixed payment, and what it costs in interest.

Date Calculator

Add or subtract days, weeks, months, or years from a date, and count the days between two dates.

Ideal Weight Calculator

Ideal body weight by Devine, Hamwi, Robinson, and Miller formulas plus the healthy BMI band.

Travel Time Calculator

Driving time and arrival time from distance and speed, with breaks and a speed comparison table.

Attendance Percentage Calculator

Attendance percentage plus how many classes you can still miss, or must attend, to stay above the line.

How to Use Pregnancy Calculator

1

Select or Upload

Choose your file or paste your input into the workspace above. Drag and drop is supported.

2

Configure & Process

Adjust options to fit your task. Processing runs immediately with no waiting queue.

3

Download Result

Preview and save your output in one click with no watermarks or sign-up prompts.

Private & Confidential

Browser tools process files locally on your device, and server temporary files are deleted automatically within 15 minutes.

Free & No Registration

Full access to every utility without creating an account, signing in, or hitting paywalls.

Works on Any Device

Responsive layout that runs smoothly on desktop, tablet, and mobile browsers across all operating systems.

Frequently Asked Questions

Is Pregnancy Calculator completely free to use?

Yes, Pregnancy Calculator on KiloToolbox is 100% free with no limits, hidden fees, or account sign-up required.

Are my files safe and private?

Yes. Pregnancy Calculator processes all files directly inside your web browser using client-side JavaScript and WebAssembly. Your files never leave your computer or mobile device and are never uploaded to any remote server.

Can I use Pregnancy Calculator on mobile phones and tablets?

Yes, KiloToolbox is fully responsive and runs smoothly on iPhone, Android, iPad, Mac, Windows, and Linux.