How Long to Boil Carrots Enjoy the sweetness and nutrition of carrots by boiling them before eating. The cook time to boil carrots will vary depending on how the size of the carrots. For sliced carrots, boil them for 4 to 5 minutes. Baby carrots will need 6 to 7 minutes to cook through, while whole carrots will need 10 to 15 minutes. You'll know the carrots are done when they become soft. Make sure to rinse any dirt and debris off carrots before boiling them and if you're working with whole carrots, you'll need to peel off the skins and chop off the leafy tops before boiling. See more at: MyLifeLoveFood #MyLifeLoveFood #mylifelovefoodcom #Carrots