[Sherman Logan]

standard is halving/doubling

Really?

5280 feet per mile?

16 oz. per pound? 2000 pounds per ton?

45,360 square feet per acre? 640 acres per square mile? 27,878,400 square feet per square mile?

8 quarts per peck, 4 pecks per bushel?

16 oz. per pint, 8 pints per gallon, 128 oz. per gallon?

The problem is not that "standard measurements" don't use decimals, it's that every type of measurement uses a different number.

All that said, the metric system can screw you up royally just by misplacing the decimal point.

[Ray76]

An acre is 66 feet by 660 feet.

A peck is 2 gallons, a peck is 1/4 bushel

>> 16 oz. per pint, 8 pints per gallon, 128 oz. per gallon?
It's not that complicated. It's halving/doubling

2   cups = 1 pint
2  pints = 1 quart
4 quarts = 1 gallon

Halving/doubling is better suited to everyday use than metric is. That's why it hasn't caught on.