The San Francisco-based online encyclopedia, which turns 10 years old on Saturday, also vows to reach that goal in the next five years while maintaining its status as a non-profit organization.
Wikipedia claims 410 million unique visitors a month -- fifth most in the world -- making it the envy of many for-profit rivals in the Silicon Valley who aspire to generate such numbers.
For now Wikipedia is content to function on its operating budget of about $20 million a year, raised mostly through donations, with the primary goal of adding more readers.
This year it will open its first overseas office, in India, where Wikipedia hopes to increase readership and articles in English and several Indian languages. Among 316 events marking the 10th anniversary in 104 countries, 60 events were scheduled inside India.
China will have to wait until Wikipedia has guarantees its content will not be censored. Wikipedia has opted against moving servers into China because of the condition it would have to agree to government limits on publishing.