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Volumetric Flow Rate

gph (US)tom³/s

Convert US gallons per hour (gph (US)) to cubic metres per second (m³/s).

Factor1 gph (US) = 1.051503e-6 m³/s

Converter

gph (US)

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

Result
0.10515m³/s

Rendered to 6 significant figures.

Formula

Formula
m³/s = gph (US) × 1.051503e-6

Multiply any value in US gallons per hour by 1.051503e-6 to obtain the value in cubic metres per second.

Worked example

Convert 100000 gph (US) to m³/s.

  1. 01Start with 100000 gph (US).
  2. 02Multiply by the conversion factor: 100000 × 1.051503e-6 = 0.10515 m³/s.
Result100000 gph (US) = 0.10515 m³/s

Conversion table

gph (US)m³/s
11.0515e-6
22.103e-6
55.2575e-6
101.0515e-5
202.103e-5
505.2575e-5
1000.00010515
2000.0002103
5000.00052575
10000.0010515

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gph (US) to m³/s?
1 gph (US) equals 1.051503e-6 m³/s. To convert, multiply the value in US gallons per hour by 1.051503e-6.
How do I convert 1 gph (US) to m³/s?
1 gph (US) = 1.0515e-6 m³/s. For any value, multiply by 1.051503e-6.
How do I convert m³/s back to gph (US)?
Divide by the same factor — or equivalently, multiply by 951019.4. So 1 m³/s = 951019 gph (US).
When would I need to convert US 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. gph (US) 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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