From the Kukkiwon Web Site. Note the remarks section below
Poom/Dan Minimum Time
Required for Promotion Age Limits for Promotion
Start from Dan Start from Poom
1st Poom N A N A Less than 15 Years Old
1st to 2nd Pom 1 year N A Less than 15 Years Old
2nd to 3rd Poom 2 years N A Less than 15 Years Old
3rd to 4th Poom 3 years N A Less than 18 Years Old
1st Dan N A 15 years and above N A
1st to 2nd Dan 1 year 16 years and above 15 years and above
2nd to 3rd Dan 2 years 18 years and above 15 years and above
3rd to 4th Dan 3 years 21 years and above 18 years and above
4th to 5th Dan 4 years 25 years and above 22 years and above
5th to 6th Dan 5 years 30 years and above 30 years and above
6th to 7th Dan 6 years 36 years and above 36 years and above
7th to 8th Dan 8 years 44 years and above 44 years and above
8th to 9th Dan 9 years 53 years and above 53 years and above
9th to 10th Dan N A 60 years and above 60 years and above
* Remarks:
(1) All applicants should have passed the minimum time and age required for promotion.
(2) One who started from Poom may have the privilege of test application with shortened time limits
until 5th Dan promotion.
2) 1st,2nd,3rd Poom holder, being 15 years of age or above, is the same grade of Dan holder.
(4th Poom holder, being 18 years of age or above, is the same as 4th Dan holder)
*1st, 2nd, 3rd Poom holder, being 15 years of age or above, can have the Dan Certificates when they
want to change their Poom certificates. (4th Poom holder, being 18 years of age or above, can
change the 4th Dan certificate)
3) When 1st, 2nd, 3rd Poom holder, being 15 years of age or above, want to be promoted to the next
higher Dan,
he or she can be applied Dan promotion test. However, 3rd Poom holder who is 18 years of age
and above can be applied 4th Dan and under 18 years of age can be applied 4th Poom.