General
Grams to Milliliters (g to mL) Converter
Convert mass measurements in grams to volume measurements in milliliters by accounting for substance density.
Enter mass and select substance to see results
Related to Grams to Milliliters Converter
The Grams to Milliliters (g to mL) converter uses the fundamental relationship between mass, volume, and density to convert weight measurements into volume measurements. The conversion is based on the equation:
Volume (mL) = Mass (g) ÷ Density (g/mL)
This equation shows that to convert from grams to milliliters, we need to divide the mass by the density of the substance. The density of a substance is its mass per unit volume, typically measured in grams per milliliter (g/mL) for liquids and solutions.
Our calculator includes pre-set density values for common substances like water (1.00 g/mL), milk (1.03 g/mL), cooking oil (0.92 g/mL), honey (1.42 g/mL), glycerin (1.26 g/mL), and mercury (13.55 g/mL). For other substances, you can enter a custom density value to perform the conversion. The density values are standardized at room temperature (20°C or 68°F) and standard atmospheric pressure.
The calculator provides two key pieces of information in the results: the converted volume in milliliters (mL) and the density value used for the calculation. Understanding these results requires considering several factors:
Volume Result
The calculated volume represents the space that the given mass of substance would occupy under standard conditions. For example, 100 grams of water will occupy 100 milliliters of space because water has a density of 1 g/mL. However, 100 grams of mercury will only occupy about 7.38 milliliters due to its much higher density of 13.55 g/mL.
Temperature and Pressure Effects
Keep in mind that density can vary with temperature and pressure. The pre-set values in this calculator are for room temperature (20°C) and standard atmospheric pressure. For more precise calculations at different conditions, use the custom density option with the appropriate density value for your specific conditions.
1. Why do I need to know the density to convert from grams to milliliters?
Density is essential for converting between mass (grams) and volume (milliliters) because different substances have different masses per unit volume. Without knowing the density, it's impossible to determine how much space a given mass of substance will occupy.
2. Are the results accurate for all temperatures?
The pre-set density values are for room temperature (20°C/68°F). Since density can change with temperature, the results may vary slightly at different temperatures. For precise calculations at specific temperatures, use the custom density option with the appropriate density value for your temperature.
3. Can I use this calculator for any substance?
Yes, you can use this calculator for any substance as long as you know its density. While we provide pre-set values for common substances, the custom density option allows you to calculate volumes for any substance with a known density.
4. Why do some substances have such different volumes for the same mass?
This difference occurs because substances have different densities. Dense substances like mercury (13.55 g/mL) pack more mass into a smaller volume, while less dense substances like oil (0.92 g/mL) require more volume to contain the same mass.
5. What is the scientific source for this calculator?
This calculator is based on fundamental physical principles and density values from the CRC Handbook of Chemistry and Physics, 103rd Edition (2022-2023). The conversion formula (Volume = Mass ÷ Density) is derived from the basic definition of density in physical chemistry. The density values for common substances are standardized measurements verified by the National Institute of Standards and Technology (NIST) and are widely used in scientific and industrial applications. The temperature dependence of density is well-documented in thermodynamic literature and handbooks of physical properties.