One packet equals the sweetness of two teaspoons of sugar, but has nowhere near the same volume. So how do you tell how many packets of Splenda to use to sub for a tablespoon, 1/3 cup, or one whole cup of sugar? Find all those answers here, on this Splenda conversion chart.
(No, I’m not shilling for Splenda, and yes, I know it’s got man-made chemicals and probably isn’t the healthiest thing in the world. But sometimes, it’s just the best substitute, and as long as you’re not drinking buckets of it every day in your coffee, pop or tea, I think a little now and then probably won’t hurt the average person.)