Compare1d8! vs 1d10

1d8! vs 1d10

Side-by-side distributions with exact probabilities. Edit either expression or drag the HP slider — the URL updates as you go, so the page stays shareable. expression syntax →

Strike A

Roll 1 8-sided die (each explodes on a 8: reroll and add).

min 1 max 80 mean 5.14 36/7 ±3.80
P(finish at 5 HP) = 50.00% (1/2)
  • 1 12.50%
  • 2 12.50%
  • 3 12.50%
  • 4 12.50%
  • 5 12.50%
  • 6 12.50%
  • 7 12.50%
  • 8 0.00%
  • 9 1.56%
  • 10 1.56%
  • 11 1.56%
  • 12 1.56%
  • 13 1.56%
  • 14 1.56%
  • 15 1.56%
  • 16 0.00%
  • 17 0.20%
  • 18 0.20%
  • 19 0.20%
  • 20 0.20%
  • 21 0.20%
  • 22 0.20%
  • 23 0.20%
  • 24 0.00%
  • 25 0.02%
  • 26 0.02%
  • 27 0.02%
  • 28 0.02%
  • 29 0.02%
  • 30 0.02%
  • 31 0.02%
  • 32 0.00%
  • 33 0.00%
  • 34 0.00%
  • 35 0.00%
  • 36 0.00%
  • 37 0.00%
  • 38 0.00%
  • 39 0.00%
  • 40 0.00%
  • 41 0.00%
  • 42 0.00%
  • 43 0.00%
  • 44 0.00%
  • 45 0.00%
  • 46 0.00%
  • 47 0.00%
  • 48 0.00%
  • 49 0.00%
  • 50 0.00%
  • 51 0.00%
  • 52 0.00%
  • 53 0.00%
  • 54 0.00%
  • 55 0.00%
  • 56 0.00%
  • 57 0.00%
  • 58 0.00%
  • 59 0.00%
  • 60 0.00%
  • 61 0.00%
  • 62 0.00%
  • 63 0.00%
  • 64 0.00%
  • 65 0.00%
  • 66 0.00%
  • 67 0.00%
  • 68 0.00%
  • 69 0.00%
  • 70 0.00%
  • 71 0.00%
  • 72 0.00%
  • 73 0.00%
  • 74 0.00%
  • 75 0.00%
  • 76 0.00%
  • 77 0.00%
  • 78 0.00%
  • 79 0.00%
  • 80 0.00%
Strike B

Roll 1 10-sided die.

min 1 max 10 mean 5.50 11/2 ±2.87
P(finish at 5 HP) = 60.00% (3/5)
  • 1 10.00%
  • 2 10.00%
  • 3 10.00%
  • 4 10.00%
  • 5 10.00%
  • 6 10.00%
  • 7 10.00%
  • 8 10.00%
  • 9 10.00%
  • 10 10.00%
  • 11 0.00%
  • 12 0.00%
  • 13 0.00%
  • 14 0.00%
  • 15 0.00%
  • 16 0.00%
  • 17 0.00%
  • 18 0.00%
  • 19 0.00%
  • 20 0.00%
  • 21 0.00%
  • 22 0.00%
  • 23 0.00%
  • 24 0.00%
  • 25 0.00%
  • 26 0.00%
  • 27 0.00%
  • 28 0.00%
  • 29 0.00%
  • 30 0.00%
  • 31 0.00%
  • 32 0.00%
  • 33 0.00%
  • 34 0.00%
  • 35 0.00%
  • 36 0.00%
  • 37 0.00%
  • 38 0.00%
  • 39 0.00%
  • 40 0.00%
  • 41 0.00%
  • 42 0.00%
  • 43 0.00%
  • 44 0.00%
  • 45 0.00%
  • 46 0.00%
  • 47 0.00%
  • 48 0.00%
  • 49 0.00%
  • 50 0.00%
  • 51 0.00%
  • 52 0.00%
  • 53 0.00%
  • 54 0.00%
  • 55 0.00%
  • 56 0.00%
  • 57 0.00%
  • 58 0.00%
  • 59 0.00%
  • 60 0.00%
  • 61 0.00%
  • 62 0.00%
  • 63 0.00%
  • 64 0.00%
  • 65 0.00%
  • 66 0.00%
  • 67 0.00%
  • 68 0.00%
  • 69 0.00%
  • 70 0.00%
  • 71 0.00%
  • 72 0.00%
  • 73 0.00%
  • 74 0.00%
  • 75 0.00%
  • 76 0.00%
  • 77 0.00%
  • 78 0.00%
  • 79 0.00%
  • 80 0.00%

B finishes in 1.46 strikes vs A's 1.60 — B wins by 0.14 strikes.

Strikes to kill 5 HP expected: 1.60 (6561/4096)
  • ≤ 1 50.00%
  • ≤ 2 90.63%
  • ≤ 3 99.22%
  • ≤ 4 99.98%
Strikes to kill 5 HP expected: 1.46 (14641/10000)
  • ≤ 1 60.00%
  • ≤ 2 94.00%
  • ≤ 3 99.60%