▸ processconvert
Volumetric Flow Rate

gal/day (US)tom³/day

Convert US gallons per day (gal/day (US)) to cubic metres per day (m³/day).

Factor1 gal/day (US) = 0.003785412 m³/day

Converter

gal/day (US)

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

Result
3785.41m³/day

Rendered to 6 significant figures.

Formula

Formula
m³/day = gal/day (US) × 0.003785412

Multiply any value in US gallons per day by 0.003785412 to obtain the value in cubic metres per day.

Worked example

Convert 1.00000e+6 gal/day (US) to m³/day.

  1. 01Start with 1.00000e+6 gal/day (US).
  2. 02Multiply by the conversion factor: 1.00000e+6 × 0.003785412 = 3785.41 m³/day.
Result1.00000e+6 gal/day (US) = 3785.41 m³/day

Conversion table

gal/day (US)m³/day
10.0037854
20.0075708
50.018927
100.037854
200.075708
500.18927
1000.37854
2000.75708
5001.8927
10003.7854

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gal/day (US) to m³/day?
1 gal/day (US) equals 0.003785412 m³/day. To convert, multiply the value in US gallons per day by 0.003785412.
How do I convert 1 gal/day (US) to m³/day?
1 gal/day (US) = 0.00378541 m³/day. For any value, multiply by 0.003785412.
How do I convert m³/day back to gal/day (US)?
Divide by the same factor — or equivalently, multiply by 264.1721. So 1 m³/day = 264.172 gal/day (US).
When would I need to convert US gallon per day to cubic metre per day?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. gal/day (US) to m³/day 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).

Related conversions