Feeding Conversion Kit: Switch from Bottle to Cup
By Dr Browns | Published: 2026-10-20
Category: Buying Guides
Learn how a feeding conversion kit lets you reuse Dr. Brown's bottles as a transitional cup for babies moving from bottle to cup.
Quick Answer
If your baby is ready for cup drinking but still uses Dr. Brown's Options+ wide neck bottles, a feeding conversion kit lets you swap the nipple for a spill-resistant sippy lid without buying a whole new cup.
Why a Conversion Kit Beats a New Cup
Buying a separate toddler cup often means adjusting to a different drinking angle, weight, and straw style. With a brand-compatible conversion kit, your child keeps the same bottle body they already grip and lift. That familiarity can make the switch less frustrating for both of you.
Trade-off: Not All Bottles Convert
Conversion kits only fit the specific bottle line they were designed for. The Dr. Brown's Options+ Conversion Kit is made exclusively for 270ml wide neck Options+ bottles. You cannot use it on standard neck, narrow, or other brand bottles. Check your bottle's size and neck before ordering.
Decision Rules: When to Buy a Feeding Conversion Kit
- 1. Check Bottle Compatibility: Confirm you have Dr. Brown's Options+ Wide Neck bottles in 270ml size. The conversion kit will not fit narrow neck or standard neck bottles. Measure the bottle neck diameter if you are unsure – wide neck Options+ is about 1.5 inches across.
- 2. Assess Cup Readiness: Use a conversion kit when your baby can sit upright and tilt their head back to drink from a spout. If they still need a nipple or straw, wait a few weeks. A baby who repeatedly bats the cup away or turns their head is not ready for the transition.
- 3. Practice with Water First: Fill the converted bottle with a small amount of water before trying milk or formula. Your baby may leak or spill while learning the new mouth position. Expect some mess the first few times – have a towel ready and keep sessions short.
- 4. Replace as Needed: The conversion kit includes a sealing disc and collar that can wear out over time. Buy a replacement kit when the lid no longer seals tightly or shows cracks. A worn seal causes drips; replace the entire kit rather than mixing old parts.
Product Facts
- Dr Brown's Options+ Conversion Kit, 270ml: Kit includes vent, reservoir, lid, collar and sealing disc. No teats included. You only need to remove the teat and screw on the new lid; the bottle and nipple ring stay the same, so the transition uses parts you already own.
Dr Brown's Options+ Conversion Kit, 270ml
Who This Kit Fits – and Who Should Pass
Best for
- Parents already using Dr. Brown's Options+ 270ml wide neck bottles who want a low-cost cup transition
- Babies around 9–12 months who can hold a bottle and tilt back to drink from a spout
Not for
- Babies who still need a nipple, straw, or soft spout – look for a dedicated sippy cup instead
- Families using narrow neck or non-Dr. Brown's bottles; no conversion kit is available yet
