That depends what's resting on it.
A square inch of lead because lead is more dense
-- 1 square inch weighs nothing, since its volume is zero. -- If the square inch is one end of a vertical column of water, then the column weighs about [ 5pounds 31/3ounces ] for each 12-ft of its height.
.032 Aluminum sheet typically weighs about .45lbs per square foot. Do one square inch would be 1/144th of that, or .003lbs. A little under 1/10th of an ounce
Steel is typically 490 lb/cubic foot. There are 1,728 square inches in a cubic foot which means that each cubic inch weighs about .284 pounds (just a bit over a quarter of a pound per square inch).
None. A square inch has no volume.
An area of 1 square inch!
One square inch
On average, concrete weighs about 12.5 pounds per square foot per inch thick. This can vary based on the type and density of the concrete mix.
A lead brick typically weighs around 28 pounds per square inch, depending on its dimensions and density.
1 square inch of ink.
On average, an inch of granite weighs around 12-13 pounds per square foot. This weight can vary slightly depending on the specific density and composition of the granite.
One square inch