Splenda No Calorie Sweetener, Packets are individual portions of the no calorie sweetener you love. When the time comes to sweeten your tea, coffee or morning cereal, reach for the familiar yellow packet. The sweetest part? Just one packs the same sweetness as two teaspoons of sugar, without calories. Sweet Fact: Cutting out two teaspoons of sugar a day for just one year can save you 40 hours on an exercise bike.