Volume to Mass Calculator — How to Find Mass from Volume and Density
The volume to mass calculator is a tool that helps you convert volume to mass or mass to volume using density. It includes dozens of items and their densities divided into six categories: Food, Metals, Non-metals, Gases, Liquids, and Astronomy, so you can find your result in seconds.
How to Find Volume with Density and Mass?
To convert mass to volume or vice versa, you need to know the substance's density. Density is the mass-to-volume ratio — a fundamental physical property of every material. For example, water at 4 °C has a density of 1 kg/L, meaning one liter of water weighs exactly one kilogram.
The formula that ties mass, volume, and density together is:
density = mass / volume
Rearranged for each variable:
- mass = density × volume — to find mass when you know volume
- volume = mass / density — to find volume when you know mass
- density = mass / volume — to find density when you know both
Density-Mass-Volume Triangle
The density-mass-volume triangle is a helpful memory aid. Draw a triangle, divide it into three parts, and write Mass at the top, Density and Volume at the bottom. The horizontal line acts as a division bar:
- Density = Mass / Volume
- Volume = Mass / Density
- Mass = Density × Volume
How to Use Our Volume to Mass Calculator?
- Select a mode: "Volume → Mass" or "Mass → Volume".
- Select a material from our built-in list of 80+ substances, or choose "Custom" and enter your own density value.
- Enter the value (volume or mass) and choose its unit.
- Select the output unit for your result.
- Click Calculate — the result appears in less than a second!
Our calculator supports both Metric (mL, L, m³, g, kg, tonne) and US / Imperial (fl oz, cup, pint, quart, gallon, ft³, oz, lb, short ton) unit systems, so you can work in whichever system you prefer.
Material Densities Reference
Food
Water (1,000 kg/m³), Milk (1,030), Flour — Wheat (600), Corn (550), Rye (670), Buckwheat (660), Barley (610), Soy (680), Corn Starch (650), Potato Starch (720), Granulated Sugar (845), Powder Sugar (560), Brown Sugar (800), Salt (1,217), Honey (1,420), Butter (959), Olive Oil (918), Sunflower Oil (960), Cooking Oil (880), Vegetable Oil (890), Rice (850), Oats (410), Maple Syrup (1,320), Jam (1,330), Nutella (1,260), Cream 38% (984), Cream 13% (1,013).
Metals
Aluminum (2,700), Beryllium (1,850), Brass (8,600), Copper (8,940), Gold (19,320), Iron (7,870), Lead (11,340), Magnesium (1,740), Mercury (13,546), Nickel (8,900), Platinum (21,450), Plutonium (19,840), Silver (10,500), Tin (7,310), Titanium (4,506), Uranium (18,800), Zinc (7,000) kg/m³.
Non-metals
Concrete (2,400), Cork (240), Diamond (3,500), Ice (916), Nylon (1,150), Oak (710), Pine (373), Plastics (1,175), Styrofoam (75), Wood typical (700) kg/m³.
Gases (at sea level)
Air at 0 °C (1.293), Air at 20 °C (1.205), Carbon Dioxide (1.977/1.842), Carbon Monoxide (1.250/1.165), Hydrogen (0.0898), Helium (0.179), Methane (0.717/0.688), Nitrogen (1.2506/1.165), Oxygen (1.429/1.331), Propane (1.882), Water Vapor (0.804) kg/m³.
Liquids
Liquid Hydrogen at −255 °C (70 kg/m³), Liquid Oxygen at −219 °C (1,141 kg/m³), Fresh Water at 4 °C (1,000 kg/m³), Salt Water 3% (1,030 kg/m³).
Astronomy
The Universe (~5×10⁻²⁷ kg/m³), Interstellar Medium (~10⁻¹⁹), The Earth (5,515), Earth's Inner Core (13,000), Sun's Core (33,000–160,000), Super-massive Black Hole (~9×10⁵), White Dwarf (~2.1×10⁹), Atomic Nuclei (~2.3×10¹⁷), Neutron Star (~4.8×10¹⁷), Stellar-mass Black Hole (~10¹⁸) kg/m³.
Why Does Density Matter?
Density tells you how "heavy" a substance is relative to its size. It's why a kilogram of gold fits in your hand, while a kilogram of styrofoam fills a large bag. It's also why some things float on water (density < 1,000 kg/m³) and others sink (density > 1,000 kg/m³). Density changes slightly with temperature and pressure — significant in engineering and scientific work.
Practical Applications
- Cooking: Convert cup measurements to grams for precise recipes.
- Engineering: Estimate weight of materials for structural design.
- Shipping: Calculate package weight from volume for freight pricing.
- Science: Lab calculations involving liquids, gases, and solids.
- DIY projects: Estimate how much a volume of concrete, wood, or metal will weigh.