Bernoulli Energy

Energy equation between two points — solve pressure, velocity, elevation or head loss.

✓ Validated4 independent tests · PDF

Design diagram — updates live with your inputs

Unknown & Fluid

Solve fori

Fluid unit weight (pcf)i Water = 62.4

Point 1

Pressure p1 (psf)i Gauge

Velocity V1 (ft/s)i

Elevation z1 (ft)i Above datum

Point 2

Pressure p2 (psf)i Gauge

Velocity V2 (ft/s)i

Elevation z2 (ft)i Above datum

Losses

Head loss 1->2 (ft)i h_L between points

US customary (ft, cfs)

Validation, assumptions & limitations Download validation report (PDF) ↗

This calculator is verified by 4 independent tests comparing its output against closed-form statics, NDS/SDPWS design-standard values and published worked examples. Full case-by-case results are in the PDF report.

Assumptions

Steady, incompressible, along a streamline; g = 32.2 ft/s^2.
Velocities from continuity; head loss is an input.
Gauge pressures; uniform fluid unit weight.

Limitations

Single streamline - no kinetic-energy correction (alpha = 1).
Head loss h_L must be supplied from a separate loss calc.

Results are for preliminary design and must be confirmed by a licensed engineer against the current adopted code and project-specific conditions.