I forget where I found this information (it was on some internet forum) but I thought it would help those looking to store food in buckets. When I find something I like I copy it to a word document and save it off to my preps folder.
Product in pounds per 5 gallon bucket
Navy Beans - 38.85 lbs
Hulled Rice - 36.55 lbs
Rough Rice - 27.99 lbs
Flour - 28.75 lbs
Rolled Oats - 14.75 lbs
Roasted Coffee Beans - 20.99 lbs
Shelled Corn - 34.99 lbs
Powdered Milk - 21.75 lbs
Shelled Peanuts - 31.1 lbs
Fine Salt - 58.31 lbs
Brown Sugar - 34.98 lbs
Granulated Sugar - 41.20 lbs
Wheat - 37.32 lbs
If you come across any more let me know and I'll be sure to add it.
Hope this helps.
-Tash