Enter IBO rating for the bow (FPS)

Enter actual draw length of the bow (inches)

Enter peak draw weight (pounds)

Enter total arrow weight (grains)

Enter additional weight on the string (grains)





Estimated FPS =

Inches of
drop
20-40yds
FPS
Inches of
drop
20-60yds
29
220
86
24
240
72
21
260
62
18
280
53
16
300
46
14
320
41
13
330
38
11
340
36
10
350
34
9
360
32
The chart (above arrow) is a close approximation of arrow speed calculated by inches of arrow drop between 20 & 40 and 20 & 60 yards.
You must be able to shoot a "decent group" at 40 and/or 60 yards.This method is better than nothing if you do not have access to a chronograph. All numbers are rounded to the nearest inch.
Arrow Speed Estimator
Untitled Page