Sand application rate conversion calculator

I was on a phone call recently when the topic of sand topdressing rates came up. The rate was given to me in pounds per 1000 ft2. That's not a rate I think about very often. I usually use mm for simplicity, or kg/m2 if I must do mass per area.

"How's the rate?" I was asked.

"Wait a minute, let me get a calculator out," I replied. "Hold on a minute, please."

I proceeded to make a few calculations,…