Free quick picks
Double Color Ball number generator
Generate random Double Color Ball (双色球) numbers instantly. 6 red balls from 1-33 plus 1 blue ball from 1-16. Free, browser-based, no sign-up.
6 red balls from 1-33 + 1 blue ball from 1-16. Browser-based randomness.
How randomness works
Uses crypto.getRandomValues() with rejection sampling to avoid modulo bias. Cannot predict results or improve odds. Entertainment use only.
Saved lines
No saved lines yet.
About Double Color Ball (双色球)
China's most popular lottery game
Double Color Ball (双色球, Shuangseqiu) is the most popular lottery game in China, operated by the China Welfare Lottery. Drawings are held every Tuesday, Thursday, and Sunday. The game uses a two-color ball system -- red and blue.
Select six red ball numbers from 1 to 33 and one blue ball number from 1 to 16. Jackpots can reach hundreds of millions of yuan.
Double Color Ball Rules
- Format: 6 red balls from 1-33 + 1 blue ball from 1-16
- Draw days: Tuesday, Thursday, Sunday
- Jackpot record: Over 1 billion yuan cumulative
- Odds of jackpot: 1 in 17,721,088
- Ticket cost: 2 yuan per line
- Operator: China Welfare Lottery
Double Color Ball Generator FAQ
How many numbers do I pick for Double Color Ball?
Pick 6 red ball numbers from 1 to 33, plus 1 blue ball number from 1 to 16. The generator produces valid combinations automatically.
When are Double Color Ball drawings?
Drawings are held three times a week: Tuesday, Thursday, and Sunday evenings in China.
What is the difference between red and blue balls?
Red balls (1-33) are the main numbers. The blue ball (1-16) is a separate bonus number that determines higher-tier prizes.