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BALANCE TOOL

Cooldown Calculator

Calculate the actual wait time and usage frequency from a base cooldown and CDR.

sec
%
sec
Result
CDR Comparison (relative to base CD)

    What is the Cooldown Calculator?

    This tool calculates the actual wait time and usage frequency of a skill or attack from its base cooldown and Cooldown Reduction (CDR). It's useful for developers balancing game mechanics.

    What is Cooldown Reduction?

    CDR is the percentage by which a skill's cooldown is shortened. This tool uses the model: Actual CD = Base CD × (1 − CDR).

    How to Use

    1. Choose which value you want from the three modes.
    2. Enter the base CD, CDR, or target CD.
    3. Optionally choose a CDR preset.
    4. Press "Calculate" to see the wait time and usage frequency.
    5. Copy the result if needed.

    Formula and Example

    With a base CD of 10 seconds and 20% CDR, 10 × (1 − 0.20) = 8 seconds. That's 0.125 uses per second, or 7.5 per minute. A 12-second base CD reduced by 25% becomes 9 seconds, and reaching a target of 7 seconds from a 10-second base CD requires 30% CDR.

    Using This for Game Balance

    Compare cooldown reductions from skill trees or gear, enemy attack intervals, and how often an ultimate can be reused. It's also useful alongside DPS calculations when weighing single-hit damage against wait time.

    CDR vs. Cooldown Recovery Rate

    Cooldown Recovery Rate or Recovery Speed can use a different formula depending on the game. For example, "20% faster recovery" might mean 10 ÷ 1.2 ≈ 8.33 seconds. This may not match this tool's CDR formula, so check your game's specification.

    Notes

    Enter CDR as 0% or greater and less than 100%. At 100%, the cooldown becomes 0 seconds and usage frequency becomes infinite, which is outside the scope of this calculation. Uses per minute is a theoretical value and may differ from the actual whole number of uses you can complete. CDR caps vary by game design.

    FAQ

    What's a 10-second skill reduced by 20%?

    8 seconds.

    Does 50% CDR always mean half the cooldown?

    With this tool's formula, yes, but your game's actual specification may differ.

    Are CDR and Recovery Rate the same?

    Not necessarily. Check the name and formula used by your specific game.

    How do I find uses per minute?

    Divide 60 by the actual cooldown in seconds.

    Related tools: DPS Calculator, Drop Rate Calculator, Level Curve Generator, Armor / Damage Reduction Calculator