When buying cabinet paint for laminate, you'll want to know roughly how much paint you'll need. Luckily, you won't need a lot.
As a general rule of thumb, 1 gallon of paint covers 350 square feet of space. Now that's more for if you're not just painting cabinets but painting an entire room…
Let's say you have 2 cupboards to paint.
The first is 3 feet x 2 feet, and the second is 4 feet x 2 feet.
3 x 2 = 6, and 4 x 2 = 8.
8+6 = 14. So the two cupboards have a combined square footage of 14 feet.
If you had one gallon of paint, you could do 25 coats of paint on these 2 cabinets!
If you're just painting a few kitchen cupboards, you should be fine with a US half-gallon tin or a US Quart size. You don't need anything huge.