Water Depth PSI Calculator

Water Pressure Formula:

\[ P_{psi} = \frac{\rho \times g \times d}{6894.76} \]

Water Pressure (P_psi): psi

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a Water Depth PSI Calculator?

Definition: This calculator estimates the water pressure in pounds per square inch (psi) based on water depth, density, and gravitational acceleration.

Purpose: It helps divers, engineers, and researchers determine the pressure at different water depths for safety and design purposes.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{psi} = \frac{\rho \times g \times d}{6894.76} \]

Where:

\( P_{psi} \) — Water pressure (pounds per square inch)
\( \rho \) — Water density (typically 1000 kg/m³)
\( g \) — Gravitational acceleration (9.81 m/s²)
\( d \) — Water depth (meters)
6894.76 — Conversion factor from Pascals to psi

Explanation: The formula calculates hydrostatic pressure in Pascals and converts it to psi.

3. Importance of Water Pressure Calculation

Details: Understanding water pressure is crucial for diving safety, submarine design, underwater construction, and fluid dynamics research.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the default density 1000 kg/m³?
A: This is the approximate density of fresh water at standard temperature and pressure.

Q2: When would I change the density value?
A: For saltwater (about 1025 kg/m³) or other liquids with different densities.

Q3: Does this account for atmospheric pressure?
A: No, this calculates only hydrostatic pressure. Add 14.7 psi for total pressure at depth including atmospheric pressure.

Q4: How accurate is this for deep water?
A: For very deep water, density changes with pressure and temperature should be considered.

Q5: What's the pressure at 10 meters depth?
A: About 14.22 psi (plus atmospheric pressure of 14.7 psi).