Calculator
What the Specific Volume Converter does
Specific Volume Converter: 1 m³/kg = 16.01846352 ft³/lb, so multiply a cubic metre per kilogram value by 16.01846352 to get cubic foot per pound, or divide to go back. Example: 1 m³/kg = 16.01846352 ft³/lb.
Result, How it was calculated and Reverse conversion, derived from Value, From and To. You can nudge a single number and watch the effect straight away.
Most people who open the Specific Volume Converter are anyone working across two measurement systems. Having the exact factor matters more than a rough mental estimate.
There is no account, no upload and no server round trip, because the page does the work itself.
If you want to check the arithmetic, the field table, the method and a worked example are further down.
What do the Specific Volume Converter fields mean?
The Specific Volume Converter uses 3 inputs. You do not have to fill everything in before seeing an answer; the starting values already produce one.
| Field | What to enter | Default |
|---|---|---|
| Value | required | 1 |
| From | choose from Cubic metre per kilogram (m³/kg), Cubic centimetre per gram (cm³/g), Litre per kilogram (L/kg) or Cubic foot per pound (ft³/lb) | Cubic metre per kilogram (m³/kg) |
| To | choose from Cubic metre per kilogram (m³/kg), Cubic centimetre per gram (cm³/g), Litre per kilogram (L/kg) or Cubic foot per pound (ft³/lb) | Cubic foot per pound (ft³/lb) |
How does the Specific Volume Converter work?
Both units are converted through specific volume's base unit (m³/kg), so any of the 4 units in the dropdowns can be paired in either direction without loss of accuracy.
Factors follow the internationally agreed definitions. The inch has been exactly 25.4 mm since 1959, and an exact definition is used wherever one exists. Where a unit is fixed by measurement rather than by agreement, the accepted CODATA or IAU value is used.
Worked example
These are the values the Specific Volume Converter loads by default, and the result it produces from them. This is the worked example the page starts from, reproduced here so you can check the arithmetic.
| Value | 1 |
|---|---|
| From | Cubic metre per kilogram (m³/kg) |
| To | Cubic foot per pound (ft³/lb) |
| Result | 16.01846352 ft³/lb |
|---|---|
| How it was calculated | 1 m³/kg = 16.01846352 ft³/lb, so 1 × 16.01846352 = 16.01846352 ft³/lb |
| Reverse conversion | 0.06242796 m³/kg (if you meant 1 ft³/lb) |
Specific volume
Specific volume is the reciprocal of density, volume per unit mass (m³/kg) rather than mass per unit volume, and it’s the quantity thermodynamics tables (particularly for steam and refrigerants) are traditionally built around.
Worth knowing
- Engineers working with steam cycles (power plants) or refrigeration cycles (air conditioning, refrigerators) routinely look up specific volume directly from thermodynamic property tables, rather than calculating it by inverting a density figure each time.
- Because it’s a direct reciprocal of density, converting specific volume between unit systems (metric m³/kg vs. US customary ft³/lb) uses the same underlying length and mass conversion factors as the density converter, just applied in the opposite direction.
- Specific volume increases as a substance is heated or as pressure drops (the same mass takes up more space). This relationship is central to how steam turbines and refrigeration compressors are designed and analysed.
Definitions: BIPM SI Brochure · NIST reference on units
How to use it
- Fill in Value.
- Pick a value for From: the options are Cubic metre per kilogram (m³/kg), Cubic centimetre per gram (cm³/g), Litre per kilogram (L/kg) or Cubic foot per pound (ft³/lb).
- Pick a value for To: the options are Cubic metre per kilogram (m³/kg), Cubic centimetre per gram (cm³/g), Litre per kilogram (L/kg) or Cubic foot per pound (ft³/lb).
- Live output means you can search for a target value by nudging an input up and down.
- The panel reports Result, How it was calculated and Reverse conversion.
- Copy Link puts the current inputs in the URL, so bookmarking it brings the same numbers back.
What this tool does not do
- Repeated conversions compound rounding, so convert once from the original value where possible.
- Factors use the internationally agreed definitions; some industries round them differently.
- It applies one method. If your situation calls for a different convention, the answer will not match.
- The tool cannot tell whether a number was entered in the unit you intended, so double-check the labels.
Frequently asked questions
3 things: Value, From and To. Every box already holds a working value, meaning you can explore the calculation before committing to real figures.
With the values loaded when the page opens, result comes out as 16.01846352 ft³/lb. The figure is derived from the inputs above, so it updates whenever they do.
It never leaves the tab. The page does the work itself rather than asking a server to.
No. There is no account, no usage cap and no trial period. The site is funded by advertising rather than by charging for the tools.
It implements the published definition directly, without shortcuts or approximations.