A 5 yard dumpster is roughly 10-13 ft long and 4-6 ft wide with sides 2 feet high and will hold around 30-35 gallon size jars.

A 10 yard dumpster is roughly 10-13 ft long and 8 ft wide with sides 2-3.5 feet high and will hold around 3 pickup size truck loads.

A 15 yard dumpster is roughly 10-13 ft long and 8 ft wide with sides 3.5 feet high and will hold about 4.5 pickup truck loads.

A 20 yard dumpster is around 20-22 ft long and 8 ft wide with 3.5 feet high sides and will hold around 6 pickup size truck loads.

A 30 yard dumpster is roughly 20-22 ft long and 8 ft wide with higher sides and will hold around 9 pickup size truck loads.

A 40 yard dumpster is roughly 20-22 ft long and 8 ft wide with the sides around 7 feet high and will hold around 12 pickup size truck loads.

These are rough estimates. There may be additional sizes at various companies.