1. What is Water Density?

Definition: Density of water is its mass per unit volume, typically expressed in g/cm³ or kg/m³.

Standard Value: Pure water at 4°C has a density of exactly 1 g/cm³ (1000 kg/m³).

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density in g/cm³
• \( \rho_{kg/m³} \) — Density in kg/m³

Explanation: Since 1 g/cm³ equals 1000 kg/m³, we divide the kg/m³ value by 1000 to convert to g/cm³.

3. Importance of Water Density

Details: Water density is crucial in fluid mechanics, hydrology, and many engineering applications. It varies with temperature and purity.

4. Using the Calculator

Tips: Enter the density in kg/m³ (default 1000 for pure water at 4°C). The calculator will show the equivalent in g/cm³.

5. Frequently Asked Questions (FAQ)

Q1: Why is water density 1 g/cm³?
A: The gram was originally defined as the mass of 1 cm³ of water at its maximum density (4°C).

Q2: How does temperature affect water density?
A: Water density decreases as temperature moves away from 4°C in either direction.

Q3: What's the density of seawater?
A: Seawater is typically about 1.025 g/cm³ (1025 kg/m³) due to dissolved salts.

Q4: How precise is this conversion?
A: The conversion is mathematically exact - 1000 kg/m³ always equals 1 g/cm³.

Q5: When would I need to calculate water density?
A: Common in engineering, science experiments, buoyancy calculations, and fluid dynamics problems.