Density is mass per unit volume, typically expressed as ρ = m/V where ρ is density, m is mass, and V is volume. The SI unit is kg/m³ (kilograms per cubic meter). Other common units include g/cm³ (grams per cubic centimeter), lb/ft³ (pounds per cubic foot), and kg/L (kilograms per liter). Density varies with temperature and pressure, so measurements are typically referenced to standard conditions (20°C, 1 atm). Water at 4°C has a density of exactly 1000 kg/m³, which serves as the reference for specific gravity calculations.
Density Converter
Convert between 30+ density units including metric, imperial, specific gravity, API gravity, Brix, Baumé, Plato, and industry-specific scales with scientific precision.
Conversion Formula
1 kg/m³ = 1000 g/m³
Common Density Conversions
Quick reference table| From | To | Result |
|---|
How to Use the Density Converter
Our density converter is engineered for precision across scientific, industrial, and specialized applications. Follow these steps for accurate conversions.
-
Select Source Unit Choose from 30+ density units including kg/m³, g/cm³, lb/ft³, specific gravity, API, Brix, and more.
-
Select Target Unit Pick the density unit you want to convert to from the second dropdown.
-
Enter Value Type your density value — the result appears instantly as you type.
-
View Formula The exact conversion formula is displayed below for verification and learning.
-
Swap Units Click the swap button to instantly reverse the conversion direction.
-
Reference Table Use the common conversions table for quick lookups of standard values.
Why Professionals Choose ASLI FORM Density Converter
Built with precision engineering and industry-standard formulas, our converter meets the demands of scientists, engineers, brewers, petroleum professionals, and food technologists.
-
30+ Density Units From SI units to specialized scales like API gravity, Brix, Baumé, and Plato.
-
Industry-Standard Formulas Uses exact formulas from NIST, BIPM, API, and brewing/wine industry standards.
-
10-Digit Precision Results accurate to 10 significant digits for engineering and scientific work.
-
Works Offline All calculations run locally in your browser. Perfect for field work and labs.
-
Universal Compatibility From basic keypad phones to 4K displays — works on every device and OS.
-
Zero Tracking No cookies, no analytics, no data collection. Your privacy is absolute.
Supported Density Units
Our converter supports all major density measurement systems used worldwide across industries.
-
SI Units kg/m³, g/cm³, g/mL, kg/L, mg/L, mg/mL, g/L — International System of Units.
-
Imperial Units lb/ft³, lb/in³, lb/gal (US), lb/gal (UK), oz/in³, oz/gal (US), oz/gal (UK).
-
Ton-Based Units Short ton/yd³, long ton/yd³, metric ton/m³ — for heavy industry.
-
Specific Gravity Dimensionless ratio comparing density to water at 4°C (1000 kg/m³).
-
API Gravity Petroleum industry scale for classifying crude oils and petroleum products.
-
Brewing & Wine Scales Brix, Baumé, Plato, Twaddell, Tralles — for sugar content and fermentation.
Frequently Asked Questions
Density is an absolute measurement with units (kg/m³, g/cm³, lb/ft³), while specific gravity (also called relative density) is a dimensionless ratio comparing a substance's density to water's density at 4°C (1000 kg/m³). Specific gravity has no units. For example, water has a density of 1000 kg/m³ but a specific gravity of 1.0. Iron has a density of 7870 kg/m³ and a specific gravity of 7.87. Specific gravity is widely used in brewing, winemaking, petroleum, and gemology because it's independent of the measurement system.
API gravity is a measure developed by the American Petroleum Institute to classify petroleum liquids. The formula is: API = (141.5 / specific gravity at 60°F) - 131.5. Higher API gravity means lighter (less dense) petroleum. Classification: Light crude > 31.1° API, Medium crude 22.3-31.1° API, Heavy crude < 22.3° API, Extra heavy < 10° API. The petroleum industry uses API gravity worldwide for pricing, transportation, and refining decisions. Water has an API gravity of 10°.
Brix (°Bx) measures the sugar content in an aqueous solution. One degree Brix equals 1 gram of sucrose in 100 grams of solution (1% w/w). It's widely used in the wine, juice, and sugar industries. Typical values: water = 0°Bx, apple juice = 11-14°Bx, grape juice = 14-24°Bx, honey = 70-80°Bx. Brix is measured using a refractometer or hydrometer. In winemaking, Brix helps determine harvest timing and predict alcohol content (roughly 1°Bx ≈ 0.55% potential alcohol).
The Baumé scale is a hydrometer scale used primarily in France and some European countries for measuring the density of liquids, especially wine and sugar solutions. There are two versions: one for liquids heavier than water (sugar solutions) and one for liquids lighter than water (alcohol). For liquids heavier than water: °Bé = 144.3 - (144.3 / specific gravity). For liquids lighter than water: °Bé = (144 / specific gravity) - 144. It's related to specific gravity and is still used in some winemaking and brewing traditions, though Brix and Plato are more common today.
The Plato scale (°P) is used in brewing to measure the concentration of dissolved sugars (wort) before fermentation. One degree Plato equals 1 gram of sucrose in 100 grams of solution, similar to Brix but with slight differences in calculation for maltose-rich solutions. Typical beer worts range from 8-20°P. Brewers use Plato to predict alcohol content and characterize beer styles: light beers 8-10°P, standard lagers 11-13°P, strong ales 14-17°P, barleywines 18-24°P. The conversion to specific gravity: SG ≈ 1 + (°P / (258.6 - (°P/258.2) × 227.1)).
The conversion is straightforward: 1 g/cm³ = 1000 kg/m³. To convert kg/m³ to g/cm³, divide by 1000. To convert g/cm³ to kg/m³, multiply by 1000. For example, water has a density of 1000 kg/m³ = 1 g/cm³. Iron has a density of 7870 kg/m³ = 7.87 g/cm³. This relationship exists because 1 m³ = 1,000,000 cm³ and 1 kg = 1000 g, so the ratio is 1000/1,000,000 × 1000 = 1000.
Here are densities of common substances at standard conditions (20°C, 1 atm):
- Air: 1.225 kg/m³ (0.001225 g/cm³)
- Water: 998 kg/m³ (0.998 g/cm³)
- Ice: 917 kg/m³ (0.917 g/cm³)
- Wood (oak): 710 kg/m³
- Aluminum: 2700 kg/m³ (2.7 g/cm³)
- Iron: 7870 kg/m³ (7.87 g/cm³)
- Copper: 8960 kg/m³ (8.96 g/cm³)
- Lead: 11340 kg/m³ (11.34 g/cm³)
- Gold: 19320 kg/m³ (19.32 g/cm³)
- Platinum: 21450 kg/m³ (21.45 g/cm³)
Yes, the ASLI FORM Density Converter is 100% free forever. There are no registration requirements, no usage limits, no subscription fees, and no hidden charges. We do not display advertisements and we do not collect any personal data. Our mission is to provide a premium tool that everyone can use without barriers.
Yes. Once the page loads, all calculations happen locally in your browser. There is no server-side processing, no API calls, and no internet dependency for conversions. This makes the tool perfect for field work, laboratories, remote locations, and anywhere connectivity is limited or unavailable.
Our converter delivers results accurate to 10 significant digits using conversion factors from official metrology institutes including NIST, BIPM, and industry standards. For specialized scales like API gravity, Brix, Baumé, and Plato, we use the exact industry formulas rather than approximations. This level of precision is suitable for engineering calculations, scientific research, and professional applications.
Absolutely. Our converter is designed with a mobile-first responsive approach and works perfectly on every device — from basic keypad phones to 4K desktop displays. The interface adapts intelligently: desktops get a sidebar, tablets get a collapsible sidebar, and mobile devices get optimized dropdowns. Touch interactions, scroll snapping, and momentum scrolling are all optimized for mobile.
The Twaddell scale is a hydrometer scale used primarily in the British chemical industry for liquids denser than water. The formula is: °Tw = 200 × (specific gravity - 1). For example, a liquid with specific gravity 1.5 has 100°Tw. It's mainly used for acids, alkalis, and other industrial chemicals. The scale ranges from 0°Tw (water) to about 170°Tw for very dense liquids.
The Tralles scale is used to measure the alcohol content of spirits, primarily in some European countries. It's similar to the Gay-Lussac scale and expresses alcohol by volume (ABV) as a percentage. The scale ranges from 0° (pure water) to 100° (pure ethanol). It's related to specific gravity: °Tralles ≈ 100 × (1 - specific gravity) for dilute solutions. Modern usage has largely been replaced by ABV percentage.
We welcome feedback from our users. You can reach our support team through multiple channels:
- Phone: +91-7011993433 (Mon-Sat, 9 AM to 7 PM IST)
- WhatsApp: Same number with pre-filled message
- Email: support@asliform.in
Need More Professional Tools?
Explore our complete suite of 150+ free tools including calculators, converters, PDF tools, code editors, and AI-powered utilities.