Quick checklist for head control, sitting, tongue-thrust reflex, and interest in food to see if your baby is likely ready for solids (BLW or spoon-fed).

https://devonwheels.com/tools/breast-pump-flange-calculator/embed

About the Breast Pump Flange Size Calculator

The Breast Pump Flange Size Calculator helps you find the right flange size by converting your nipple diameter (mm) into a recommended fit. Proper sizing improves comfort, milk flow, and pumping efficiency. Since brands vary, use this tool as a starting point and adjust for comfort.

How to Measure

• Measure the nipple base only (not the areola) in millimeters (mm).
• Use a ruler or nipple ruler for accuracy.
• If measured at rest, remember nipples often expand during pumping, so you may need a few mm larger.

How It Works

1. Enter your nipple diameter (mm).
2. Select when you measured (After pumping / At rest).
3. Choose fit preference (Snug / Standard / Roomy).
4. Get a primary recommended size, a typical range, and alternative sizes (±1 step).
5. Test during a pumping session and adjust ±1 mm if needed.

Fit Check Guidelines

• Nipple moves freely inside the tunnel.
• Minimal or no areola pull.
• No blanching, rubbing, or pain.