Pitot Tube Dynamic Pressure Calculator

Use pitot readings to compute dynamic pressure instantly. Include manometer inputs and density options too. Export CSV, print PDF, and validate your setup today.

Calculator Inputs

Choose the input set that matches your measurement setup.
Applies to Pt and Ps fields below.
Outputs are converted from Pascals.
Stagnation pressure measured by the pitot opening.
Static port measurement; use absolute for compressible mode.
Used to estimate velocity when q is known.
Height between columns, connected across Pt and Ps.
Converted internally to meters.
Water ≈ 1000, mercury ≈ 13595.
Used only in the velocity method.
Air is commonly approximated as 1.4.
Used for density and speed of sound estimates.
Dry air is commonly approximated as 287.05.

Formula Used

For compressible airflow, Ps must be an absolute pressure. If you only have gauge pressure, add local atmospheric pressure before using that mode.

How to Use This Calculator

  1. Select a method matching your instrument setup.
  2. Choose the pressure units used in your readings.
  3. Enter the values required for the chosen method.
  4. Optionally enter density to estimate velocity.
  5. Press Calculate to view results above the form.
  6. Use Download CSV or Download PDF after results appear.

If your pitot tube is misaligned, dirty, or near walls, readings may be biased. Keep the probe aligned with the flow and avoid strong turbulence where possible.

Example Data Table

Case Pt (Pa) Ps (Pa) ρ (kg/m³) Dynamic Pressure q (Pa) Velocity (m/s)
Vent duct 102050 101325 1.20 725 34.708
Wind tunnel 104000 101325 1.18 2675 67.265
Low-speed test 101600 101325 1.225 275 21.191

Velocities above are computed using V = √(2q/ρ). Your results will vary with temperature, humidity, and probe placement.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.