Due Date Calculator

Estimate your pregnancy due date and current gestational age from your last menstrual period. Free, instant, no signup.

How to use the Due Date Calculator

  1. Enter your values. Fill in the fields with your numbers.
  2. Calculate. Press Calculate to run the due date calculator.
  3. Use the result. Copy the result or try a related tool next.

Why use our Due Date Calculator

Instant results. Enter your figures and the due date calculator returns an answer in seconds.
Free & private. Runs in your browser — no signup, and nothing is sent to a server.
Accurate. Uses standard formulas so you can rely on the numbers.

Free to use — premium coming soon

FREE
  • Unlimited calculations
  • Instant results
  • No signup
PREMIUM
  • Remove ads
  • Save & compare scenarios
  • Export results

About the Due Date Calculator

Estimate your pregnancy due date and current gestational age from your last menstrual period. This due date calculator does the maths for you so you get a fast, reliable answer without spreadsheets or manual calculation. Enter your values, hit Calculate, and read the result instantly.

Frequently asked questions

Is the due date calculator free?

Yes — unlimited use, no account needed.

How accurate is it?

The due date calculator uses standard, well-established formulas. Always double-check figures that matter.

From our blog

How to use the Pay Raise Calculator (with examples)

By the Super Simple Digital Tools Team · Updated June 2026

Whether it's for work, study or everyday life, the Pay Raise Calculator takes the hassle out of everyday calculations. Calculate your new salary and raise amount after a percentage pay increase, plus the monthly uplift. Free, instant, no signup.

Using it takes seconds: fill in the fields with your numbers, then press Calculate to run the pay raise calculator, then copy the result or try a related tool next.

Instant results — Enter your figures and the pay raise calculator returns an answer in seconds.

Ready to try it? Open the Pay Raise Calculator and get your answer in seconds.

  • Instant results: Enter your figures and the pay raise calculator returns an answer in seconds.
  • Free & private: Runs in your browser — no signup, and nothing is sent to a server.
  • Accurate: Uses standard formulas so you can rely on the numbers.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.

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