A tablespoon is equivalent to 0.5 liquid ounces so there are 2 tablespoons in 1 ounce. There are two different ounces, ounces of weight/mass and ounces of volume (fluid). This can change when you are using the tablespoon to measure a non-liquid such as flour or sugar since the weight of dry items is not the same as their volume. An ounce of volume is called a "fluid ounce." A tablespoon measures volume not weight. In order to convert tablespoons or teaspoons to ounces or back, You need to know what is being measured. A spoon of lettuce will weigh different than a spoon of gold in solid ounces.
3.88 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
4 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
1.5 oz 1 oz = 2 tbsp 1 tbsp = 0.5 oz
50 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
4 oz 1 oz = 2 tbsp 1 tbsp = 0.5 oz
5 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
25.8 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
1 oz = 2 tbsp 1 tbsp = 0.5 oz
5.2 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
1 oz = 2 tbsp 1 tbsp = 0.5 oz
10 tbsp 1 oz = 2 tbsp 1 tbsp = 0.5 oz
4 oz 1 oz = 2 tbsp 1 tbsp = 0.5 oz