[Saiyan-jin saga]

Arrival of Radditz

Gokou-430-1,100 max
Piccolo-420-1,440 max
Gohan-710-1,330 (when angry)
Radditz-1,200

Arrival of Vegeta

Piccolo-1,500-3,200 max
Gohan-1,500-3,000
Tienshinan-1,800
Yamucha-1,100
Kuririn-1,600
Chaozu-1,050
Saibaimen-1,200
Nappa-4,750
Vegeta-18,000
Gokou-5,000-9,000, Kaioken-12,000 X2-16,000 X3-18,000-23,000 X4-27,000

[Freezer Saga]

Vegeta-24,000 (in beginning) 100,000 (near the end)
Gohan-20,000 (after power up)
Kuririn-17,000 (after power up)
Dadoria-22,000
Zarbon-23,000 Monster-26,000
Kuwi-18,000
Ginyu-120,000
Jace-30,000
Guldo-15,000
Burta-31,500
Racoom-33,000
Nail-40,000
Piccolo-200,000 Piccolo Merged with Nail-800,000
Freezer-500,000 2nd Trans. 700,000 3rd Trans. 875,000 4th Trans. 1,250,000
Goku-180,000-450,000 max (w/ Kaioken, when 1st arrived) 475000-870500max. (w/ Kaioken, after healing tank)
Super Saiyan Gokou-1,500,000
Ten Shin Han-37,000 (Nearly at the end of King Kai's Training)
Yamcha-35,000 (Nearly at the end of King Kai's Training)
Chaozu-17,500 (Nearly at the end of King Kai's Training)

NOTE: All power levels beyond this point are just guesses/estimates because scouters weren't used after the Freeza saga. If you see a site that claims that they ARE the true power levels, they are fooling you.

[Android Saga]

Cyborg Freeza-1,850,000
King Kold-2,000,000
Super Saiya-jin Gokou-3,000,000
Super Saiya-jin Mirai Trunks-2,500,000
Vegeta-Around 250,000
Piccolo-950,000
Gohan-Around 40,000
Ten Shin Han-Around 55,000
Choazu-Around 22,000
Yamucha-Around 35,000
Kuririn-Around 37,000

3 Years Later

Super Saiya-jin Gokou-4,750,000
Super Saiya-jin Vegeta-5,500,000
Super Saiya-jin Mirai Trunks-4,500,000
Piccolo-3,750,000 Fused With Kami-10,000,000
Gohan-Around 1,000,000
Ten Shin Han,Kuririn, & Yamucha-Over 150,000
Android #16-16,000,000
Android #17-10,000,000
Android #18-7,500,000
Android #19-1,650,000
Android #20 (Dr.Gero)-1,200,000
Cell (1st form)-8,000,000 (After absorbing humans)-12,000,000 (with #17)-16,750,000
Super Vegeta (After training in Room Of Spirit and Time)-17,000,000
Super Trunks(After Training)-17,500,000

[Cell Saga]

Perfect Cell-25,000,000 - 27,000,000 (after near-death)
Cell Jr.-25,000,000 each
Super Saiya-jin Gokou-25,000,000
Super Saiya-jin Mirai Trunks-20,500,000
Super Saiya-jin Vegeta-21,000,000
Super Saiya-jin Gohan-19,000,000
Super Saiya-jin 2 Gohan-27,000,000
Piccolo-18,500,000
Ten Shin Han, Kuririn, & Yamucha-Around 1,000,000

[Majin-Buu Saga]

Super Saiya-jin 3 Gokou-37,500,000
Majin Vegeta-36,000,000
Piccolo-28,000,000
Great Saiyaman-29,000,000
Super Saiya-jin Goten-13,500,000
Super Saiya-jin Trunks-14,000,000
Gotenks-29,000,000
Super Saiya-jin Gotenks-38,000,000
Super Saiya-jin 3 Gotenks-43,000,000
Kaioshin-17,000,000
Mystikal Gohan (after power up)-36,000,000
Majin-Buu (Fat)-38,000,000
Super Majin-Buu-41,000,000
Majin-Gotenks Buu-44,000,000
Evil Buu-45,500,000
Vegetto-49,000,000