1. What is Density of Water in g/mm³?

Definition: This calculator converts the density of water from kg/m³ to g/mm³.

Purpose: It helps scientists and engineers work with water density in different unit systems for various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density in grams per cubic millimeter (g/mm³)
• \( \rho_{kg/m³} \) — Density in kilograms per cubic meter (kg/m³)

Explanation: The conversion accounts for both mass (kg to g) and volume (m³ to mm³) unit changes.

3. Importance of Water Density Conversion

Details: Water density at 4°C is approximately 1000 kg/m³ (1 g/cm³) or 0.001 g/mm³. This conversion is useful in microfluidics and materials science.

4. Using the Calculator

Tips: Enter the water density in kg/m³ (default 1000 kg/m³ for pure water at 4°C). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the density of water at 4°C in g/mm³?
A: Approximately 0.001 g/mm³ (exactly 0.000999972 g/mm³).

Q2: Why is water density maximum at 4°C?
A: Water molecules form their most compact arrangement at this temperature due to hydrogen bonding.

Q3: When would I need this conversion?
A: When working with very small volumes where mm³ is more practical than m³.

Q4: How does temperature affect water density?
A: Density decreases as temperature moves away from 4°C in either direction.

Q5: What about saltwater density?
A: Seawater (3.5% salinity) is about 1025 kg/m³ or 0.001025 g/mm³ at 4°C.