840 feet in inches
Result
The conversion result is: 840 feet is equivalent to 10080 inches.[1]
Conversion formula
How to convert 840 feet to inches?
We know (by definition) that: 1 ft = 12 in.
We can set up a proportion to solve for the number of inches.
1 ft / 840 ft = 12 in / x in
Now, we cross multiply to solve for our unknown x:
x in = (840 ft / 1 ft) * 12 in → x in = 10080 in
Conclusion:
840 ft = 10080 in
Conversion in the opposite direction
The inverse of the conversion factor is that 1 inch is equal to 9.92063492063492e-05 times 840 feet.
It can also be expressed as: 840 feet is equal to 1 / 9.92063492063492e-05 inches.
Approximation
An approximate numerical result would be: eight hundred and forty feet is about ten thousand and eighty inches, or alternatively, a inch is about zero times eight hundred and forty feet.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.