There is an overlap in the two schemes, estimated at 7.5 million ha (these are forests that are certified by both the FSC and PEFC). More than two-thirds of this "double" certification is in Europe (3.5 million ha) and North America (2.6 million ha). Taking double certification into account, the world's total certified forest area accounts for about 10.7% of the total global forest area of 4.03 billion ha.