K-Factor Flow Calculator
Q = K × √P — Calculate flow from K-factor and pressure
How to use this tool:
- Enter the head's K-factor (*) — check what's stamped on the head (K5.6, K22.4, K33.6…)
- Enter the achieved pressure (*)
- Set the number of outlets/heads if more than one
- Read the total flow
Required Values (Optional — for Pass/Fail)
Per Outlet
—
Total Flow
—
—
—
Formula: Q = K × √P
Common K-Factors
| Sprinkler Type | K (L/min/√bar) | K (gpm/√psi) |
|---|---|---|
| Standard Spray | 80 | 5.6 |
| Large Drop | 115 | 8.0 |
| ESFR (Early Suppression) | 200 | 14.0 |
| ESFR (Large) | 360 | 25.2 |
| Residential | 57 | 4.0 |
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We provide no warranty or guarantee for the use of this tool or its accuracy. In no event will we be liable for any loss or damage, including, without limitation, indirect or consequential loss or damage, or any loss or damage arising from loss of data or profits arising out of, or in connection with, the use of this tool.