Paper-roll length, Feet

How much paper fits on a roll?
L = ( ((Dy x Dy) - (Di x Di)) x 3.14 ) / ( 48 x T )
T (Thickness) 1/1000 inch
D (Outer diameter) inch
d (Inner diameter) inch
Length Feet
No of 3" receipts pcs
No of A4 pages pcs
No of Letter pages pcs
Change T, D, and/or d, press TAB
and the rest will be calculated

Switch to metric version


Last Updated on 04-jul-2003
By Staffan Fällström