An Igloo 8-gallon cooler is likely around 67 lb when filled with water , since water weighs about 8.34 lb per gallon. That works out to roughly 66.7 lb of water alone , plus the cooler’s own empty weight.

Quick estimate

  • 8 gallons of water × 8.34 lb per gallon = 66.72 lb.
  • Add the cooler’s shell weight for the total loaded weight.

What that means

If you mean the empty Igloo 8-gallon cooler, the exact weight depends on the model. Igloo product listings vary by size and design, with similar coolers ranging from about 8 lb for a 5-gallon model to about 8.5 lb for a 10-gallon model.

Rule of thumb

  • Filled with water: about 67–75 lb total , depending on the cooler’s own weight.
  • Empty cooler: usually much lighter, but the exact number depends on the specific Igloo model.

TL;DR: 8 gallons of water weighs about 66.7 lb , so an 8-gallon Igloo cooler filled with water will be around 67 lb plus the cooler’s weight.