Baby Weights and Car Seats

Here is some helpful data in knowing when you'll need to switch your kids to different car seats:

REGULATIONS:

• Rear-facing infant seat: Infants should ride in rear-facing child safety seats until they have reached 1 year of age and 20 lbs.
• Forward facing convertible seat: Children about 20-40 lbs. and 1-4 years of age can ride in forward-facing or forward-facing convertible seats.
• High-backed booster seat (belt-positioning booster seat): Children too tall for a forward-facing convertible seat (ears line up with the back of the convertible seat) can use a high-backed booster seat.
• Booster seat: Children about 40-80 lbs. and 4 years and older also should use a high-backed booster seat. 
• Seat belt: When children can manage (without slouching) to sit with their feet on the floor of the vehicle, their back straight against the back seat cushion, and knees over the edge of the seat (usually at about 80 pounds and 57" tall), they can use a seat belt. 

Average baby weight charts from 0-36 months, so you can plan when you'll need that next car-seat.  (There are height ones as well at www.kidsgrowth.com)