Does anyone have a formula for converting a 60m dash to a 100m dash?
there is no such thing, it just doesnt work.
I will tell you what I have seen as a NORM 
and remember these are “averages”. If it were this easy then everyone would just need to shoot for an ideal sixty and coast to the 100m line
High school
Girls- add 4.5 sec using same timing method
Boys- add 4.0 ‘’ "
Elite-
Females- add 4.0
Males- add 3.5-3.7
First of all I do not coach elite so my response is empirical from the outside looking in.
Second these numbers are based upon all conditioning (speed endurance) and mech/relaxation being in place for optimal results
If I am missing anything, chime in anyone.
There is nothing wrong, by the way, with taking a stab at what type of times you could shoot for by guesstimating. As long as you understand what it takes to achieve similar outcomes in regards to time.
I do agree with the first response however.
Be careful with “formulas”. We are playing a bit of word semantics but sometimes our reliance upon formulas are given precendence over proper training and “coaching”. What I mean is we sometimes expect “C” to occur just because we have “A”, we have overlooked the impact of “B”.
does this make sense
The formula I’ve used is:
60m/100m = 0.645
This formula is not perfect for everyone (those lacking conditioning or SE for 100m), but it seems to be fairly close across a wide range of better athletes, including high school girls.
Some heat times from USATF Nationals this year:
60m 100m ratio
Scales 6.7 10.43 0.6424
Williams 6.66 10.36 0.6429
Gay 6.57 10.07 0.6524
Crawford 6.64 10.26 0.6472
Gatlin 6.46 9.93 0.6506
Vaden 6.69 10.27 0.6514
Conwright 6.64 10.33 0.6428
Smoots 6.66 10.29 0.6472
Omole 6.64 10.35 0.6415
Kimmons 6.65 10.36 0.6419
Crawford 6.66 10.3 0.6466
Laynes 6.67 10.44 0.6389
Gatlin 6.47 9.99 0.6476
Williams 6.67 10.33 0.6457
Scales 6.65 10.34 0.6431
Blanton 6.66 10.43 0.6385
Willie 6.64 10.32 0.6434
Smoots 6.61 10.25 0.6449
Gay 6.55 10.15 0.6453
Vaden 6.59 10.24 0.6436
Conwright 6.62 10.26 0.6452
Woods 6.74 10.45 0.6450
average 0.6449
std dev 0.003599363Give that you sue a .0645 ratio, how do you determine one’s projected 100 meter time based on their 60 meter time. Ie. What mathmatical formula do you use to derive the projected 100 meter time.
60 yd time * (1 / 0.645) should work.
If you go on the splits of the champion sprinters (60, 100m), 60m to 100m conversion is between 1.53 to 1.56 depending on skill level.
Powell 2005 WR 6.39 9.77 (1.528)
2004 OG 100m
Justin Gatlin 6.41 9.85 (1.538)
F.Obikwelu 6.44, 9.86 (1.531)
M. Greene 6.44, 9.87 (1.532)
Kim Collins 6.44, 10.00(1.552)
Tim WR Montgomery 6.37, 9.78 (1.535)
M. Greene WR Athens 6.40, 9.79 (1.536)
200m 2002 EC
100m Bremen Kenderis 6.63 10.15 (1.530)
1999 WC
M. Greene 6.39 9.80 (1.533)
B. Surin 6.38 9.84 (1.542)
D. Chambers 6.41 9.97 (1.555)
O. Thompson 6.50 10.00 (1.538)
1997 WC
M. Greene 6.40 9.86 (1.540)
D. Bailey 6.43 9.91 (1.541)
Montgomery 6.42 9.93 (1.546)
Fredericks 6.44 9.94 (1.543)
Bolden 6.45 10.02 (1.553)
1991 WC
C.Lewis 6.46 9.86 (1.526)
L. Burrell 6.41 9.88 (1.541)
D. Mitchell 6.42 9.91 (1.543)
1988 OG
Ben Johnson 6.33 9.79 (1.546)
Carl Lewis 6.48 9.92 (1.530)
L. Christie 6.50 9.97 (1.533)
C. Smith 6.50 9.99 (1.536)
D. Mitchell 6.54 10.04 (1.535)
D. Williams 6.47 10.11 (1.562)
1988 OG
Flo Jo
100m semi 6.90 10.61 (1.537)
100m final 6.89 10.54 (1.529)
87 WC
Ben Johnson 6.38 9.83 (1.540)
Carl Lewis 6.50 9.93 (1.527)
Semi finals
Men Hass 6.88 10.65 (1.547)
Women
Issajenko 7.05 10.99 (1.558)
Phipps 7.53 11.67 (1.549)