Free tool

Pill Travel Time Calculator

This calculator converts your usual home dose time to the equivalent clock time at your destination. It shows time conversion only, not a schedule recommendation.

Time zone conversion only. Does not generate a transition schedule or assess backup contraception need. Check your patient leaflet or speak to your pharmacist before changing your pill schedule.

1. What type of pill are you on?

Combined pill

Estrogen + progestin. Brands: Lo Loestrin, Ortho Tri-Cyclen, Yasmin, Sprintec. ~24-hour window.

Traditional mini-pill

Norethisterone or levonorgestrel. Brands: Noriday, Norgeston. Strict 3-hour window.

Desogestrel mini-pill

Desogestrel 75mcg. Brands: Cerazette, Cerelle. Flexible 12-hour window.

Choosing the wrong pill type can give the wrong timing guidance. If you're not sure, check the active ingredient on your packaging or ask your pharmacist.

2. What time do you usually take your pill at home?

3. When are you travelling?

Change this if your trip is on a different date, so daylight saving time is handled correctly.

4. Your home time zone

5. Destination time zone

Your inputs stay on this page and are not saved.

This calculator converts your home dose time to the equivalent clock time at your destination. It does not generate a transition schedule or determine whether backup contraception is needed. It is not medical advice. Always consult your doctor or pharmacist for guidance specific to your situation and pill brand.

Track with Estroclic

Record your pill times at home and abroad

Estroclic records your pill times and sends reminders at your chosen time. When you update your reminder for a trip, the app logs the change so you have an accurate record of when you took each pill.

Download on Android