How to use the Pregnancy Calculator (with examples)
By the Super Simple Digital Tools Team · Updated June 2026
Whether it's for work, study or everyday life, the Pregnancy Calculator takes the hassle out of everyday calculations. Estimate your due date, current week of pregnancy, and trimester from your last menstrual period. Free, instant, no signup.
Using it takes seconds: fill in the fields with your numbers, then press Calculate to run the pregnancy calculator, then copy the result or try a related tool next.
Instant results — Enter your figures and the pregnancy calculator returns an answer in seconds.
Ready to try it? Open the Pregnancy Calculator and get your answer in seconds.
- Instant results: Enter your figures and the pregnancy 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.