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LoL Flash Cooldown Calculator (16.9.1)

Toggle Cosmic Insight, Ionian Boots, Transcendence โ€” see actual cooldowns instantly. ํ•œ๊ตญ์–ด

Modifiers

Total Summoner Spell Haste+18

Actual Cooldowns

๐ŸŽฎ Auto-track enemy spells

LoL Butler tracks enemy Flash/Ignite cooldowns automatically with one toggle for Cosmic Insight.

Try demo (no signup) โ†’
Formula: Actual CD = Base CD รท (1 + SSH รท 100)
Example: With Cosmic Insight only โ€” Flash = 300 รท 1.18 = 254.24s (4m 14s)
Note: Cosmic Insight does NOT affect ultimate (R) cooldowns. It gives Summoner Spell Haste (+18) and Item Haste (+10) only โ€” applies to summoner spells (Flash/Ignite) and active items (Zhonya's etc).
Data: Riot Data Dragon API (16.9.1)