Til what age (or pounds) does a child use a forward-facing car seat in Florida?

Which state your in doesn't matter in the least - its the laws of physics and what's safe that matters, and the law frequently only outlines the bare minimum where safety is concerned. By Florida law, children 3 and under must be restrained in a 5 point harness.

HOWEVER - safety experts agree that the bare minimums for safe booster use are 4 years old AND 40lbs. And most 4 year olds are still not mature enough to sit properly in a booster seat full time. They don't have the impulse control required to sit up straight (without leaning and falling asleep) during car trips. The shoulder belt has to go across the shoulder - not the neck, and the lap belt has to go across the tops of the thighs - not the belly. There are many seats out there now that will keep the average kid harnessed to 6-9 years old.

Always, with each step forward in car seat stages, you make a major step down in safety. So keep kids in each stage for as long as possible.
1)keep kids rear facing AS LONG AS POSSIBLE! The AAP recommends rear facing for the first 2 years old life, or until the child reaches the maximum of their convertible car seat rear facing. Forget the old "20lbs/1year" rule. Its outdated and could cost you your child. A forward-facing child under 2 years old is 4 times more likely to be killed or seriously injured in a crash than a rear-facing child of the same age. A child's vertabrae do not fully fuse until 3-6 years old, before then, she is at great risk for internal decapitation. The spinal column can stretch up to 2 inches in a crash BUT the spinal cord can only stretch up to 1/4 inch before it snaps and baby is gone.
2)Forward facing 5 point harness. Keep them in a forward facing 5 point harnes as long as possible - to at least age 4 AND 40lbs (meaning if your 3 year old weighs 40lbs, he needs a harnessed seat that goes past 40lbs!) and preferably to age 5 years.
3)use a booster seat until the child is at elast 4'9" tall, 80lbs, 8-10 years old, and can pass this 5 step test:
1. Does the child sit all the way back against the auto seat?
2. Do the child's knees bend comfortably at the edge of the auto seat?
3. Does the belt cross the shoulder between the neck and arm?
4. Is the lap belt as low as possible, touching the thighs?
5. Can the child stay seated like this for the whole trip?

The recommendation from safety experts and the American Academy of Pediatrics is to rearface (RF) to the limits of the seat which is 30-35lbs on all seats sold in the US. My own daughter is rode RF until she was almost three and she reached 33 lbs which is the weight limit on her Britax Marathons. I wish she could still be RF, she was so much safer.

I have included several links with great pictures and videos of what happens to childrens necks when they are FF in a crash.

Most people are concerned about their child's legs being scrunched or broken in a crash. There is absolutely no evidence that shows a child's legs are in danger and I would much rather deal with a broken leg, than a broken neck.

I became my son around the day he became a million, he replaced into already 20 lbs yet that replaced into 8 years in the past, and that i went on the wonderful advice attainable to me at that element. My 19 month previous daughter remains rear dealing with, she basically have been given as much as twenty lbs so legally i will turn her around now yet i'm unlikely to because of the fact i understand that it is safer to enable her face backwards till she reaches the top or weight optimal then turn her around. no person else has a suitable to grant you any slack, you are the Mommy so which you get to make the suggestions. Say "thank you for the enter yet they're probably going to alter the regulation quickly besides so she needs to stay rear dealing with a minimum of till she turns 2.

The are allowed to face forward at least 20 lbs and 1 year old and should stay in a 5 point harness until at least 40 lbs and 4 years old.

I got a seat that goes from 20-100 pounds and changes to a booster at 30, it's evenflo. In Ohio the law is 4 and 40 pounds but they are changing it most places to 6 and 60 pounds.

I dont know because I am not live in there

I don't know but maybe the same age out here 15 or 16 but you think wrong check and ask the police officer I know they have to be right