Pounds to US Cups for Cast Iron
Snapshot
For Cast Iron, 1 Pound equals about 0.266281 US Cups. Conversion Encyclopedia keeps one material-density basis on this page so the calculator, common values, and reverse page stay aligned.
- Material basis: Cast Iron at 7,200 kg/m^3.
- Example: For 0.1 Pounds of Cast Iron, the result is 0.026628 US Cups.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Interactive conversion
Converter Calculator
0.266281 US Cups (Cast Iron)
SwitchMachine access
Available to apps and AI agents
Pounds to US Cups for Cast Iron can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The cast-iron identifier tells the conversion engine which material record to use for the same calculation shown by the calculator.
Machine-readable identifiers
- Conversion family
material-density- Source unit
pound- Target unit
cup_us- Material
cast-iron
The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.
Example API request and response
POST /api/v1/convertRequest
{
"family": "material-density",
"value": 1,
"from": "pound",
"to": "cup_us",
"material": "cast-iron"
}Essential response
{
"ok": true,
"conversion": {
"family": "material-density",
"value": 1,
"from": "pound",
"to": "cup_us",
"result": {
"raw": 0.266280949593,
"display": "0.266281"
},
"canonicalPath": "/material-density/pounds-to-us-cups/cast-iron/"
}
}Explanation
Pounds of Cast Iron convert to us cups using one fixed density basis of 7200 kg/m^3. The same density model is used in the calculator, common values, and mirror route so storage, batching, and material-planning checks stay aligned.
Representative cast iron density.
Common Conversion Values
| Pounds (Cast Iron) | US Cups (Cast Iron) |
|---|---|
| 0.1 | 0.026628 |
| 0.25 | 0.06657 |
| 0.5 | 0.13314 |
| 1 | 0.266281 |
| 2 | 0.532562 |
| 5 | 1.331405 |
| 10 | 2.662809 |
| 25 | 6.657024 |
| 50 | 13.314047 |
| 100 | 26.628095 |
Methodology
Cast Iron density and calculation basis
Cast Iron is represented in this table by a fixed reference density of 7200 kg/m^3, equivalent to 7.2 g/cm^3. Representative cast iron density.
At this fixed reference, 1 liter of Cast Iron corresponds to 7.2 kg, while 1 kg corresponds to 0.138889 liters. Its table density is 622.2% higher than the 997 kg/m^3 water reference used in this dataset.
Among the 13 fixed table records labeled Metals, the nearest density to Cast Iron is Zinc at 7140 kg/m^3: an absolute difference of 60 kg/m^3 (0.8% relative to Cast Iron). 3 records have a lower fixed density and 9 have a higher one. The observed range in this labeled group is Aluminum at 2700 kg/m^3 to Gold at 19320 kg/m^3. This is a numerical comparison, not a claim that the materials are interchangeable.
For this direction, volume is calculated as mass divided by density after normalizing the units to kilograms and cubic meters. The resulting page multiplier is 0.266281 cup (US) per lb.
The fixed value supports repeatable calculations but is not a batch, grade, supplier, or laboratory specification. Use a measured or certified density when those conditions control the result.
Questions & answers
Frequently Asked Questions
How much cup (US) is 1 lb of Cast Iron?
1 lb of Cast Iron equals 0.266281 cup (US) with the fixed density basis used here.
What density is used for Cast Iron?
Cast Iron uses a fixed density of 7200 kg/m^3.
Is there a reverse page with the same density basis?
Yes. Use the mirror page (US Cups to Pounds for Cast Iron) to convert in the opposite direction with the same fixed density basis.