This is a comparison between the cut broadcast on American TV networks (e. g. Cartoon Network or USwpix) and the uncut Japanese Version.

While other countries have not yet aired Dragonball Kai, the series was already broadcasted a few times in the USA.
In comparison to Dragonball Z you can immediately see that Dragonball Kai was obviously toned down in a few scenes:

Dragonball Z	Dragonball Kai

Additionally, many violent sequences were not even altered for Dragonball Kai, but cut out in the first place. Thus, you will hardly see any close-up shots of Tenchinhan after Nappa cut half of his left arm off. Also, you do not see Freezer's beam going through Vegeta's chest. Even the well known sequence in which Freezer massacres Kuririn is much more harmless than in Dragonball Z.


Getting ready for US-TV:
The series was censored in order to be bradcasted on US TV. The censoring reminds one of Naruto's US Version. Sometimes there are cuts which are very noticeable due to a crack in the music, while at other times they used a few tricks, e.g. by retouching things or using alternative material. Sometimes they even altered or postponed soundtracks or sound effects in order to make the cuts less noticeable.


The overall difference in time amounts to 26 seconds.
(The rest of the difference in time results from differently long intros.)

1:56
Trunks hits the chin of one of Freezer's soldiers.
0.5 sec.

5:16
The blood on one of the corpses' back was retouched.
No difference in time

Uncut	Cut

8:29
The blood was colored black.
No difference in time

Uncut	Cut

8:56
Ditto.
No difference in time

Uncut	Cut

14:55
Freezer's body is split in half.
4 sec.

15:02
Freezer is shown again.
In the US Version, the following tracking shot starts when Freezer is no longer in frame.
5.5 sec.

15:20
You can see Freezer who was cut into pieces.
5 sec.

15:27
The short beginning of the shot – when Freezer can still be seen – was cut out.
0.5 sec.

15:31
Freezer's remains were re-colored.
No difference in time

Uncut	Cut

19:08
The shot of King Cold spitting blood was replaced by more harmless material.
No difference in time

Uncut	Cut

19:15
When King Cold crashes into the rocks, the end of the shot was cut out when blood splashes out of his wound.
0.5 sec.

19:32
King Cold's wound was „healed“ - all blood was retouched.
No difference in time

Uncut	Cut