1. What is Water Pressure from Tank Height?

Definition: This calculator estimates the hydrostatic pressure at the bottom of a water tank based on the water height and fundamental physical constants.

Purpose: It helps engineers, plumbers, and water system designers determine the pressure exerted by a column of water.

2. How Does the Calculator Work?

The calculator uses the hydrostatic pressure formula:

Where:

• \( P \) — Water pressure (Pascals)
• \( \rho \) — Water density (kg/m³, default 1000)
• \( g \) — Gravitational acceleration (m/s², default 9.81)
• \( h \) — Height of water column (meters)

Explanation: The pressure increases linearly with water depth due to the weight of the water above.

3. Importance of Water Pressure Calculation

Details: Proper pressure estimation ensures correct pipe sizing, tank design, and pump selection for water systems.

4. Using the Calculator

Tips: Enter water density (default 1000 kg/m³), gravity (default 9.81 m/s²), and water height in meters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is water density important?
A: Different liquids have different densities, which directly affect the pressure calculation. Water at 4°C has a density of 1000 kg/m³.

Q2: Does temperature affect the calculation?
A: Yes, water density changes slightly with temperature, but for most practical purposes, 1000 kg/m³ is sufficient.

Q3: How does this relate to water tower design?
A: Water towers use height to create pressure - every 10 meters of height creates about 1 atmosphere (98.1 kPa) of pressure.

Q4: Can I use this for other liquids?
A: Yes, just change the density value to match your liquid (e.g., 13600 kg/m³ for mercury).

Q5: How do I convert Pascals to other units?
A: 1 kPa = 1000 Pa, 1 bar ≈ 100 kPa, 1 psi ≈ 6895 Pa.