Density converter
Density Converter – 10 Units, Exact Factors
1 kilogram per cubic metre = 0.062428 pounds per cubic foot
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- 1 kg/m³ = 0.062428 lb/ft³
- 5 kg/m³ = 0.31214 lb/ft³
- 10 kg/m³ = 0.62428 lb/ft³
- 25 kg/m³ = 1.5607 lb/ft³
- Kilograms per cubic metrekg/m³
- Grams per cubic centimetreg/cm³
- Grams per millilitreg/mL
- Kilograms per litrekg/L
- Grams per litreg/L
- Pounds per cubic footlb/ft³
- Pounds per cubic inchlb/in³
- Pounds per US gallonlb/gal (US)
- Pounds per imperial gallon (UK)lb/gal (UK)
- Slugs per cubic foot (US)slug/ft³
- Kilograms per cubic metre1kg/m³
- Grams per cubic centimetre0.001g/cm³
- Grams per millilitre0.001g/mL
- Kilograms per litre0.001kg/L
- Grams per litre1g/L
- Pounds per cubic foot0.062428lb/ft³
- Pounds per cubic inch0.000036127lb/in³
- Pounds per US gallon0.0083454lb/gal (US)
- Pounds per imperial gallon (UK)0.010022lb/gal (UK)
- Slugs per cubic foot (US)0.0019403slug/ft³
About density conversions
Mass per unit volume. Water is about 1,000 kg/m³ (1 g/cm³, 62.4 lb/ft³); steel is about 7,850 kg/m³.
US customary and British imperial units with the same name differ in size. Each is labelled US or UK in the unit list.
Common density conversions
Density units explained
| Unit | System | Definition and notes |
|---|---|---|
| Kilogram per cubic metre (kg/m³) | SI (metric) | Base unitThe SI unit of density. Water is about 998 kg/m³ at 20 °C. |
| Gram per cubic centimetre (g/cm³) | metric (non-SI) | 1 g/cm³ = 1,000 kg/m³ (exact)Defined as exactly 1,000 kg/m³. |
| Gram per millilitre (g/mL) | metric (non-SI) | 1 g/mL = 1,000 kg/m³ (exact) |
| Kilogram per litre (kg/L) | metric (non-SI) | 1 kg/L = 1,000 kg/m³ (exact) |
| Gram per litre (g/L) | metric (non-SI) | 1 g/L = 1 kg/m³ (exact)Defined as exactly 1 kg/m³. |
| Pound per cubic foot (lb/ft³) | US & imperial (identical) | 1 lb/ft³ ≈ 16.018463 kg/m³About 16.01846 kg/m³ (exact pound ÷ exact cubic foot). |
| Pound per cubic inch (lb/in³) | US & imperial (identical) | 1 lb/in³ ≈ 27,679.905 kg/m³ |
| Pound per US gallon (lb/gal (US)) | US customary | 1 lb/gal (US) ≈ 119.82643 kg/m³About 119.8264 kg/m³. Used for drilling mud ("ppg"). |
| Pound per imperial gallon (lb/gal (UK)) | British imperial | 1 lb/gal (UK) ≈ 99.776373 kg/m³ |
| Slug per cubic foot (slug/ft³) | US customary | 1 slug/ft³ ≈ 515.37882 kg/m³Slugs per cubic foot, about 515.38 kg/m³. |
Kilograms per cubic metre to pounds per cubic foot conversion table
| Kilograms per cubic metre (kg/m³) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 0.1 kg/m³ | 0.0062428 lb/ft³ |
| 0.5 kg/m³ | 0.031214 lb/ft³ |
| 1 kg/m³ | 0.062428 lb/ft³ |
| 1.2 kg/m³ | 0.074914 lb/ft³ |
| 10 kg/m³ | 0.62428 lb/ft³ |
| 50 kg/m³ | 3.1214 lb/ft³ |
| 100 kg/m³ | 6.2428 lb/ft³ |
| 500 kg/m³ | 31.214 lb/ft³ |
| 700 kg/m³ | 43.7 lb/ft³ |
| 800 kg/m³ | 49.942 lb/ft³ |
| 900 kg/m³ | 56.185 lb/ft³ |
| 998 kg/m³ | 62.303 lb/ft³ |
| 1,000 kg/m³ | 62.428 lb/ft³ |
| 1,025 kg/m³ | 63.989 lb/ft³ |
| 1,500 kg/m³ | 93.642 lb/ft³ |
| 2,400 kg/m³ | 149.83 lb/ft³ |
| 2,700 kg/m³ | 168.56 lb/ft³ |
| 7,850 kg/m³ | 490.06 lb/ft³ |
| 8,960 kg/m³ | 559.35 lb/ft³ |
| 11,340 kg/m³ | 707.93 lb/ft³ |
Frequently asked questions
Which density units can I convert?
kilograms per cubic metre (kg/m³), grams per cubic centimetre (g/cm³), grams per millilitre (g/mL), kilograms per litre (kg/L), grams per litre (g/L), pounds per cubic foot (lb/ft³), pounds per cubic inch (lb/in³), pounds per US gallon (lb/gal (US)), pounds per imperial gallon (lb/gal (UK)), slugs per cubic foot (slug/ft³).
How accurate are the results?
Every unit is stored with its exact defining factor (NIST SP 811, NIST Handbook 44 or the BIPM SI Brochure). Calculations use double-precision arithmetic and are rounded only for display, to 5 significant figures by default (trailing zeros dropped, so 1 km shows as 1000 m). You can choose Auto (up to 10 digits), fixed decimals or more significant figures, or switch to scientific or engineering notation.
Why do US and UK (imperial) units give different answers?
Several units share a name but not a size. A US gallon is exactly 3.785411784 L while an imperial gallon is exactly 4.54609 L; a US fluid ounce is about 29.57 mL and a UK fluid ounce about 28.41 mL. Units are labelled US or UK throughout so you can pick the right one.