My measuring cups and spoons are the Australian standard set equalling …
1 cup = 240 grams
1/2 cup =120 grams
1/3 cup = 80 grams
1/4 cup = 60 grams
1 tablespoon = 20 ml
1 teaspoon = 5 ml
1/2 teaspoon =2.5 ml
1/4 teaspoon = 1.25 ml
By these measurements I’ve found that 3 tablespoons generally equals 1/4 give or take a smidge.
Other countries cup measurements are smaller than the Aussie ones, we took the easy way and said
4 teaspoons = 1 tablespoon
3 tablespoons = 1/4 cup.
I’ve found that if I use my measurements on, example US recipes where the cup and spoon is smaller the recipe generally works out as the your keeping the ratios of my cups to your cups.
Liquid millilitre (ml) measurements I’ve found are similar to milligrams (grams) on a set of digital scales.
I’ve never figured out why some recipes are in both cups and grams, I guess one of the great mysteries of life.
Hopefully this helps in your workings on recipes and how you can decrease or increase by small increments to get the flavour you’re after.