B777 Undifferentiated or Other Model
Flight Crew Last 90 Days 218.18; Flight Crew Total 15999.42; Flight Crew Type 8255.12
Confusion; Training / Qualification; Communication Breakdown
Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Clearance
General None Reported / Taken
Human Factors; Procedure; Chart Or Publication
I was in the center seat performing the IRO duties during the departure phase leaving an Asian airport.  While on the SID we were given a clearance to climb to 3;900 meters and to follow the SID.  Performing the pilot position that converts meters to feet; I immediately went to the conversion chart and momentarily disassociated myself from what was actually being done by the 2 front seat pilots. After I converted meters to feet and the monitoring pilot was done communicating with the controller; I called out the cleared altitude in feet.  The miscommunication can be better explained by the 2 flying pilots as I didn't hear what was actually being said while doing the meters to feet conversion.
An International Relief Officer misread the meters to feet conversion chart which resulted in an altitude deviation.