How many bathtubs is 50 gallons?

50 gallons is roughly 1.3 bathtubs filled to the overflow drain. One bathtub holds 40 gallons.

50 gallons is roughly 1.3 bathtubs filled to the overflow drain.

How much

Of what

That's roughly

1.3bathtubs filled to the overflow drain

Assuming one bathtub holds 40 gallons (151 L, if you insist).

Also equal to

One bathtub holds 40 gallons, or 151 L in metric. 50 gallons is 189 L. Divide one by the other:

189 L ÷ 151 L ≈ 1.3 bathtubs

Yes, we did the math in metric. Someone had to.