How to use it
- Enter the original cooldown in seconds.
- Enter the percentage reduction.
- Optionally subtract a flat number of seconds, then calculate.
Cooldown Reduction Calculator
Calculate the remaining cooldown after percentage and flat reductions.
About the Cooldown Reduction Calculator
Cooldown reduction changes how often an action can be used during a fixed period.
Calculation order
This calculator applies the percentage reduction first, then subtracts the flat reduction: final cooldown = base × (1 - percentage) - flat reduction.
Example
A 10-second cooldown reduced by 20%, then by 1 additional second, becomes 7 seconds and allows about 8.57 uses per minute.
Notes
Games may cap cooldown reduction or use a different order of operations. Compare the formula with the rules of the specific game.