Teaspoon (tsp): 1/3 tablespoon or 5 milliliters (ml)
Tablespoon (tbsp): 3 teaspoons or 15 milliliters (ml)
Fluid ounce (fl oz): 1/8 cup or 29.5735 milliliters (ml)
Cup (c): 8 fluid ounces or 240 milliliters (ml)
Pint (pt): 2 cups or 473.176 milliliters (ml)
Quart (qt): 2 pints or 946.353 milliliters (ml)
Gallon (gal): 4 quarts or 3.78541 liters (L)
Ounce (oz): 1/16 pound or 28.35 grams (g)
Pound (lb): 16 ounces or 453.592 grams (g)
Gram (g): a metric unit of weight, used in most of the world
Pinch: a small amount that can be held between the fingertips
Dash: 1/8 teaspoon or a small amount
Drop: usually refers to liquid, and is the amount that falls from a dropper when squeezed once or twice.
It is important to note that precise measurements are particularly important in baking, as the ratio of ingredients can greatly affect the final product.