Explaining the formula, it means that for every 1 ft² of blanket you need 0.5 lbs of wool. We know that calculating sometimes can be hard, so feel free to use this cheat sheet which will tell you how much yarn you need for each specific size of the blanket.

How many balls of wool do I need for a blanket?

For this you need two or three skeins of cotton or another, finer wool. In our collection we recommend the Bee Blanket, which is knitted with three skeins of our Pima cotton, or the blanket Dragonfly Blanket with only two balls of Pima cotton.

How many kg of yarn do I need for a blanket?

A general rule when using Mammoth acrylic or Merino is 1 kg arm knitted makes around 1/2 meter square.