This is a common question, but the answer is complicated. Fruit servings are 80 grams, which is usually about the size of a tennis ball. This is approximately 1 whole medium sized fruit such as a small banana, pear or apple. The equivalent could be 1/4 cup of dried fruit or fruit juice.
Vegetables can be measured differently depending on what it is and if it's raw or cooked. A serving of raw leafy veggies is 1 cup, while a 1/2 of other vegetables is considered a serving.
Measuring your fruits and veggies daily can be tedious and challenging when you are out and about living your life. Try using the MyPlate nutrition guide. According to MyPlate, you should eat more vegetables than fruits, and both combined should be half of your plate.