In the Combined competition the six most successful athletes of the previous competitions competed against each other in Speed, Bouldering and Lead.
The athletes were selected by multiplying each athletes rank from the three individual competitions.
The six climbers with the lowest scores determined by this method were invited to compete in the Combined final.
In the final itself the athletes were again ranked by multiplying their rank in the Speed, Bouldering and Lead portion with a lower score leading to a better Combined rank.

The women's and men's combined final were both held at the Olympiaworld, the women's on 15 September and the men's on 16 September.
In the Combined competition the six most successful athletes of the previous competitions competed against each other in Speed, Bouldering and Lead. The athletes were selected by multiplying each athletes rank from the three individual competitions. The six climbers with the lowest scores determined by this method were invited to compete in the Combined final. In the final itself the athletes were again ranked by multiplying their rank in the Speed, Bouldering and Lead portion with a lower score leading to a better Combined rank.
The women's and men's combined final were both held at the Olympiaworld, the women's on 15 September and the men's on 16 September.
2018 IFSC Climbing World Championships