ClarityHow to use this tool
- Enter upstream pressure, fluid density, upstream speed, downstream speed, upstream elevation, downstream elevation.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
The method, explained
P2=P1+ρ(v1²−v2²)/2+ρg(z1−z2), using g=9.80665 m/s².
Using upstream pressure = 200000 Pa, fluid density = 1000 kg/m³, upstream speed = 2 m/s, downstream speed = 4 m/s, upstream elevation = 0 m, downstream elevation = 1 m, the result is 184193.35 Pa. Change these example inputs to match your task; use the method above to check each step.
Understanding your result
Steady incompressible flow along a streamline with no pumps or losses. Keep gauge or absolute pressure convention consistent.
What to keep in mind
Steady incompressible flow along a streamline with no pumps or losses. Keep gauge or absolute pressure convention consistent. An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.
Common questions
How do I use this bernoulli pressure calculator?
Find downstream pressure from upstream pressure, velocities and elevations. Enter upstream pressure in Pa, fluid density in kg/m³, upstream speed in m/s, downstream speed in m/s, upstream elevation in m, downstream elevation in m. The starting example is editable; use values for the same system or project.
Which assumptions affect this result?
Steady incompressible flow along a streamline with no pumps or losses. Keep gauge or absolute pressure convention consistent.
Methodology maintained by ClarityKit. How these tools are built and checked.