Square Root Impact Calculator
Estimate one-way market impact (slippage) from your participation rate using the square root model.
Impact ≈ σdaily × √participation rate
σdaily = annual vol / √252. Impact scales with the square root of participation — doubling volume multiplies cost by √2 ≈ 1.4×, not 2×.
Your volume / market volume in execution window
Estimated One-Way Slippage
1.45%
σ Daily
4.03%
√ Participation
0.361