calc
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Water leak calculator
Estimates leak flow rate and total volume lost based on hole size and pressure.
in
psi
hours
Severity
Low
Flow rate
– gal/min
Total volume
– gallons
Equiv. bathtubs
– × 40 gal
Est. water cost
$–
Formula: Q = Cd · A · √(2 · P / ρ) — Cd = 0.61 (sharp-edged orifice). Hole area calculated directly from entered diameter. Cost estimated at $0.01/gal. Indicative estimates only.