How can I find the right diaper size to prevent leaks?
To find the ideal diaper size for your baby, you have two great options. First, you can use the diaper Size Calculator available on the product page of our website. Alternatively, the My Perfect Fit sizing tool within the Pampers Rewards app can help you find the right fit.
How to use our My Perfect Fit sizing tool to find the ideal diaper size:
- Open the Pampers Rewards app.
- Scroll down the home screen and select "Are you using the right size?"
- Input information about your baby.
- Receive personalized recommendations for the best diaper size and type

Important: Many parents are unaware that leaks and blowouts often arise from using the wrong diaper size. The My Perfect Fit tool is designed to help you address this issue effectively.
Benefits of using My Perfect Fit sizing tool:
- Reduces the likelihood of leaks and blowouts.
- Ensures optimal comfort for your baby.
- Helps you choose the most suitable Pampers product for your baby's needs.
Tip: Regularly re-check your baby's size, especially during growth spurts, to ensure a proper fit.
To help prevent leaks, follow these steps to check your baby's diaper fit:
- Choose the right style: Consider whether taped diapers or diaper pants are best based on your baby's mobility.
- Check the weight range: Ensure your baby is within the correct weight range for the diaper size
- Ensure a snug fit:
- The diaper should fit snugly around the waist, thighs, and bottom.
- No gaps should be present.
- For taped diapers, secure the tapes in the center of the picture strip.
- Gently run your fingers along the inner leg cuffs to ensure they're not tucked in.
- Consider sizing up: If the diaper is consistently full or leaking, you may need to move up a size for more absorbency.
Important: A leaking diaper may indicate that your baby needs a more absorbent diaper or a different size and fit.