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Volumetric Flow Rate

IGal/hrtom³/s

Convert Imperial gallons per hour (IGal/hr) to cubic metres per second (m³/s).

Factor1 IGal/hr = 1.262803e-6 m³/s

Converter

IGal/hr

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

Result
0.12628m³/s

Rendered to 6 significant figures.

Formula

Formula
m³/s = IGal/hr × 1.262803e-6

Multiply any value in Imperial gallons per hour by 1.262803e-6 to obtain the value in cubic metres per second.

Worked example

Convert 100000 IGal/hr to m³/s.

  1. 01Start with 100000 IGal/hr.
  2. 02Multiply by the conversion factor: 100000 × 1.262803e-6 = 0.12628 m³/s.
Result100000 IGal/hr = 0.12628 m³/s

Conversion table

IGal/hrm³/s
11.2628e-6
22.5256e-6
56.314e-6
101.2628e-5
202.5256e-5
506.314e-5
1000.00012628
2000.00025256
5000.0006314
10000.0012628

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from IGal/hr to m³/s?
1 IGal/hr equals 1.262803e-6 m³/s. To convert, multiply the value in Imperial gallons per hour by 1.262803e-6.
How do I convert 1 IGal/hr to m³/s?
1 IGal/hr = 1.2628e-6 m³/s. For any value, multiply by 1.262803e-6.
How do I convert m³/s back to IGal/hr?
Divide by the same factor — or equivalently, multiply by 791889.3. So 1 m³/s = 791889 IGal/hr.
When would I need to convert Imperial gallon per hour to cubic metre per second?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. IGal/hr to m³/s 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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