Fall Damage Heights
3.5-4 Blocks = 0.5 Hearts
4.5-5.5 Blocks = 1 Heart
6-6.5 Blocks = 1.5 Hearts
7-7.5 Blocks = 2 Hearts
8-8.5 Blocks = 2.5 Hearts
9-9.5 Blocks = 3 Hearts
10-10.5 Blocks = 3.5 Hearts
11-12 Blocks = 4 Hearts
12.5-13 Blocks = 5 Hearts
13.5-14.5 Blocks = 5.5 Hearts
15-15.5 Blocks = 6 Hearts
16-17 Blocks = 6.5 Hearts
17.5-18.5 Blocks = 7.5 Hearts
19-20 Blocks = 8 Hearts
20.5 Blocks = 8.5 Hearts
21-21.5 Blocks = 9 Hearts
22-23 Blocks = 9.5 Hearts
23.5-24 Blocks 10.5 Hearts
Mob Heaths
Pig: 5 Hearts
Chicken: 2 Hearts
Cow: 5 Hearts
Spider: 8 Hearts
Zombie: 10 Hearts
Skeleton: 10 Hearts
Zombie Pigman: 11 Hearts
Creeper: 10 Hearts
Enderman: 20 Hearts
Blaze: 10 Hearts
*All Damage tests were done on 1.12.2 in a singleplayer world
*This post is to help you make a mob farm
3.5-4 Blocks = 0.5 Hearts
4.5-5.5 Blocks = 1 Heart
6-6.5 Blocks = 1.5 Hearts
7-7.5 Blocks = 2 Hearts
8-8.5 Blocks = 2.5 Hearts
9-9.5 Blocks = 3 Hearts
10-10.5 Blocks = 3.5 Hearts
11-12 Blocks = 4 Hearts
12.5-13 Blocks = 5 Hearts
13.5-14.5 Blocks = 5.5 Hearts
15-15.5 Blocks = 6 Hearts
16-17 Blocks = 6.5 Hearts
17.5-18.5 Blocks = 7.5 Hearts
19-20 Blocks = 8 Hearts
20.5 Blocks = 8.5 Hearts
21-21.5 Blocks = 9 Hearts
22-23 Blocks = 9.5 Hearts
23.5-24 Blocks 10.5 Hearts
Mob Heaths
Pig: 5 Hearts
Chicken: 2 Hearts
Cow: 5 Hearts
Spider: 8 Hearts
Zombie: 10 Hearts
Skeleton: 10 Hearts
Zombie Pigman: 11 Hearts
Creeper: 10 Hearts
Enderman: 20 Hearts
Blaze: 10 Hearts
*All Damage tests were done on 1.12.2 in a singleplayer world
*This post is to help you make a mob farm