ATK (Strength and attack power )
SPD (Agility, flexibility, and dexterity)
CKR: (Mana capacity )
keep in mind the number shown doesn't represent someone full strength, there is more factor that needs to be included such as their bloodline power, weapon, and experience. Those numbers are just the base number to show their potential strength. Also, remember that this story takes place during the third shinobi war, so many shinobi still undeveloped, unlike the canon.
Normal human
ATK: 0 - 90
SPD: 0 - 90
CKR: NIL
Academy student
ATK: 91-300 (G rank )
SPD: 91 - 300 (G rank)
CKR: 0 - 200 (G rank)
Genin
ATK: 301 - 500 (F rank )
SPD: 301 - 500(F rank )
CKR: 250 - 500 (F rank)
Chunnin
ATK: 501 - 1000 (E rank )
SPD: 501 - 1000 (E rank )
CKR: 501 - 2500 (E rank )
Special Jounin
ATK: 1001- 2500 (D rank)
SPD: 1001 - 2500 ( D rank)
CKR: 2500 -4000 (D rank)
Jounin
ATK: 2501 - 4000 (C rank)
SPD: 2501- 4000 (C rank)
CKR: 4001 - 6000 (C rank)
Anbu (Captain level )
ATK: 3000 - 4500 (B rank)
SPD: 3000 - 4500 (B rank)
CKR: 4001 - 6000 (C rank )
** In my opinion, the strength between an Anbu with Jounin aren't that big, aside from their captain everyone else has the base power of a jounin.. **
Kage candidate (eg.Danzo and the three sannin)
ATK: 4500 - 5500 (A-rank)
SPD: 4500 - 5500 (A-rank)
CKR: 6001- 7000 (B-rank)
Kage
ATK: 6000 - 8500 (S-rank)
SPD: 6000- 8500 (S-rank)
CKR: 7001- 9000 (A-rank)
HASHIRAMA/MADARA
ATK: 10,000+ (S+)
SPD: 10,000+ (S+)
CKR: 15,000+ (S+)
*** Someone like Akatsuki and jinchuriki were placed between Kage candidate and Kage level. ***
I will further update this power level if there is a need to change it.