Ok, nice info above... But to keep it terms you are used to... 1/2 of a 1/4 tsp is simply 1/8 tsp.

1/8th

Half of 1/4 is 1/8

1/4 teaspoon is equal to 1.25millilitres in case of a liquid. 1/4 tsp is also equal to 1/2 liquid ounces. In case of a solid, 1/4 tsp is equal to 1.25grams.

6 1/4 tsp equal

1/16 tsp

I think it is 2/8