Fuel Injector CC to lb/hr Converter
Convert injector flow ratings between cubic centimeters per minute and pounds per hour. Choose a fuel preset or enter a custom specific gravity for tuning notes, injector listings, and parts comparisons.
Convert injector flow
Enter a flow rating, pick the starting unit, and choose the fuel density used for the mass conversion.
Enter an injector flow rating to see the conversion.
Quick gasoline injector chart
Common cc/min injector sizes converted with 0.72 gasoline specific gravity.
| cc/min | lb/hr | Approximate use range |
|---|
How to use this injector converter
- Choose whether your injector rating starts in cc/min or lb/hr.
- Enter the flow number from the injector listing or flow sheet.
- Select the fuel preset, or choose custom and enter the specific gravity used by your test data.
Injector sellers often list the same part in cc/min, lb/hr, or both. This converter keeps the fuel-density assumption visible so the comparison is easier to sanity check.
Injector flow formulas
- cc/min to lb/hr: cc/min × specific gravity × 0.132277
- lb/hr to cc/min: lb/hr ÷ (specific gravity × 0.132277)
- Gasoline shortcut: cc/min ÷ 10.5 is close when SG is 0.72
Fuel injector converter FAQ
What is 1000 cc/min in lb/hr?
Using the common gasoline rating of 0.72 specific gravity, 1000 cc/min is about 95.2 lb/hr.
What is 42 lb/hr in cc/min?
At 0.72 gasoline specific gravity, 42 lb/hr is about 441 cc/min.
Is cc/min the same as lb/hr?
No. cc/min measures volume flow, while lb/hr measures mass flow. You need the fuel specific gravity to convert cleanly between them.
Can I use this for E85 injectors?
Yes. Choose the E85 preset or enter the specific gravity from your flow data. E85 is denser than the common gasoline rating, so the same cc/min value converts to a higher lb/hr number.