Physics Bernoulli Calculator
What pressure change follows from speed and elevation changes in ideal flow? Enter the stated inputs to calculate this model.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Initial pressure (Pa) | Enter initial pressure in Pa; use the same basis as the other measurements. |
| Density (kg/m³) | Enter density in kg/m³; use the same basis as the other measurements. |
| Initial speed (m/s) | Enter initial speed in m/s; use the same basis as the other measurements. |
| Final speed (m/s) | Enter final speed in m/s; use the same basis as the other measurements. |
| Initial height (m) | Enter initial height in m; use the same basis as the other measurements. |
| Final height (m) | Enter final height in m; use the same basis as the other measurements. |
| Gravity (m/s²) | Enter gravity in m/s²; use the same basis as the other measurements. |
Understanding your result
Read Final pressure (Pa) in the units and model stated on this page. The formula p2=p1+rho*(v1*v1-v2*v2)/2+rho*g*(h1-h2) defines the relationship; measurement accuracy and model applicability are separate from numerical precision.
Common mistakes
- Mixing input units or changing the physical meaning of a variable without changing the model.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
What pressure change follows from speed and elevation changes in ideal flow?
What pressure change follows from speed and elevation changes in ideal flow? Enter the stated inputs to calculate this model.
Common uses
- What pressure change follows from speed and elevation changes in ideal flow
How it works
p2=p1+rho*(v1*v1-v2*v2)/2+rho*g*(h1-h2)
Worked example
Enter Initial pressure: 100000 Pa; Density: 1000 kg/m³; Initial speed: 2 m/s; Final speed: 4 m/s; Initial height: 1 m; Final height: 1 m; Gravity: 10 m/s². Results: Final pressure: 94000 Pa.