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Volumetric Flow Rate

ft³/hrtoIGal/hr

Convert cubic feet per hour (ft³/hr) to Imperial gallons per hour (IGal/hr).

Factor1 ft³/hr = 6.228835 IGal/hr

Converter

ft³/hr

Accepts numbers or expressions, e.g. 150 + 14.7

Result
622.884IGal/hr

Rendered to 6 significant figures.

Formula

Formula
IGal/hr = ft³/hr × 6.228835

Multiply any value in cubic feet per hour by 6.228835 to obtain the value in Imperial gallons per hour.

Worked example

Convert 100 ft³/hr to IGal/hr.

  1. 01Start with 100 ft³/hr.
  2. 02Multiply by the conversion factor: 100 × 6.228835 = 622.884 IGal/hr.
Result100 ft³/hr = 622.884 IGal/hr

Conversion table

ft³/hrIGal/hr
16.2288
212.458
531.144
1062.288
20124.58
50311.44
100622.88
2001245.8
5003114.4
10006228.8

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft³/hr to IGal/hr?
1 ft³/hr equals 6.228835 IGal/hr. To convert, multiply the value in cubic feet per hour by 6.228835.
How do I convert 1 ft³/hr to IGal/hr?
1 ft³/hr = 6.22884 IGal/hr. For any value, multiply by 6.228835.
How do I convert IGal/hr back to ft³/hr?
Divide by the same factor — or equivalently, multiply by 0.1605437. So 1 IGal/hr = 0.160544 ft³/hr.
When would I need to convert cubic foot per hour to Imperial gallon per hour?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. ft³/hr to IGal/hr is a frequently needed conversion for flow datasheet preparation.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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