my mimi interactive tool
Period flow calculator How much blood am I losing?
Turn the products you use into a practical estimate - and learn whether your bleeding pattern may be worth discussing with a healthcare professional.
Step 1
Add what you used
Enter products from your entire period. For cups and discs, use the amount you saw at emptying when possible.
Adjust estimated product capacities
Packaging varies. If your brand states an absorbency or capacity, enter it here for a better estimate.
Why it is an estimate: products differ by brand, “fullness” is subjective and menstrual fluid also contains endometrial tissue and other fluid. Clinical assessment considers your symptoms and life impact, not only millilitres.
Step 2
Check the signs that volume cannot capture
Tick anything that happened during this period.
Understanding the number
What counts as a heavy period?
Australian health guidance describes heavy menstrual bleeding as blood loss of more than about 80 mL per period or bleeding lasting longer than eight days. But measuring volume at home is difficult, and modern care also focuses on whether bleeding affects your physical health, emotional wellbeing, work, school or daily life.
A result above 80 mL is a reason to discuss your pattern with a clinician, not proof of a particular condition. A lower estimate does not rule out heavy bleeding when you have flooding, frequent product changes, large clots or symptoms of iron deficiency.
When to get help
- Book a healthcare appointment for persistent heavy periods, bleeding between periods or after sex, periods lasting longer than eight days, or fatigue and breathlessness.
- Seek prompt advice if you may be pregnant and have pain or bleeding.
- Seek urgent care for severe pain, fainting, marked weakness, or bleeding that soaks through a pad or tampon every hour for several hours.
Know your flow
A clearer measurement starts with a product you can read
A menstrual cup or disc with a known capacity can make flow tracking more practical. The reusable my mimi menstrual disc is available in two sizes and collects rather than absorbs menstrual fluid.
Explore the my mimi menstrual disc Find your size
Featured collection
my mimi - reusable menstrual disc
