Odds comparison visualiser

Your jackpot odds against exactly computable events — log-scaled bars plus the working for each comparison.

Flipping 10 heads in a row1 in 1,024
Guessing a coin flip streak of 121 in 4,096
Being dealt four of a kind (5-card)1 in 4,165
Rolling five sixes with five dice1 in 7,776
A royal flush in five dealt cards1 in 649,740
Flipping 20 heads in a row1 in 1,048,576
Matching 6 specific lotto balls from 49 (no bonus)1 in 13,983,816
Rolling ten sixes with ten dice1 in 60,466,176
Guessing a random 8-digit PIN1 in 100,000,000
Flipping 28 heads in a row1 in 268,435,456
Powerball jackpot (one line)1 in 292,201,338
Guessing a random 9-digit number1 in 1,000,000,000
Flipping 30 heads in a row1 in 1,073,741,824
Four strangers in a row sharing your birthday1 in 17,748,900,625
EventOddsWorkingvs your jackpot
Flipping 10 heads in a row1 in 1,0242^10285352.9× harder
Guessing a coin flip streak of 121 in 4,0962^1271338.2× harder
Being dealt four of a kind (5-card)1 in 4,165C(52,5) / 62470156.4× harder
Rolling five sixes with five dice1 in 7,7766^537577.3× harder
A royal flush in five dealt cards1 in 649,740C(52,5) / 4449.7× harder
Flipping 20 heads in a row1 in 1,048,5762^20278.7× harder
Matching 6 specific lotto balls from 49 (no bonus)1 in 13,983,816C(49,6)20.9× harder
Rolling ten sixes with ten dice1 in 60,466,1766^104.8× harder
Guessing a random 8-digit PIN1 in 100,000,00010^82.9× harder
Flipping 28 heads in a row1 in 268,435,4562^281.1× harder
Powerball jackpot (one line)1 in 292,201,338derived from the rules—
Guessing a random 9-digit number1 in 1,000,000,00010^90.3× harder
Flipping 30 heads in a row1 in 1,073,741,8242^300.3× harder
Four strangers in a row sharing your birthday1 in 17,748,900,625365^40.0× harder

Bar length is log-scaled (linear bars would hide everything but the jackpot). Every comparison is exactly computable — the working column shows each calculation. No vague struck-by-lightning figures.