The Oster blender jug is typically 6 cups , which is about 1.5 quarts or roughly 48 fluid ounces. Some Oster models use different jar sizes, like 5 cups or 8 cups , so the exact size depends on the model.

Model size

  • Common size: 6-cup glass jar.
  • Other variants: 5-cup and 8-cup jars also exist in Oster’s lineup.

Best match

If you mean the standard Oster replacement jar or classic blender jug, the safest answer is 6 cups.