How many hours of sleep should a 3 yr old get?

Good question. Every child is different! should be no less than 8 hours, but you can't force people to sleep! reduce any and all soda, sugars, stimulants such as computer games, and they will follow a regular pattern!
10-14 hours. Most 3 year olds need 10-14 hours of sleep in a 24 hour period depending on if they are a young 3 or old 3 and if they've given up their last nap.