Convert US liquid gallons (gal (US)) to US fluid ounces (fl oz (US)).
Edit either value. Decimals and scientific notation supported.
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1 gal (US) ≈ 128 fl oz (US)
Precision changes displayed rounding, not calculation accuracy.
fl oz (US) = gal (US) × 128fl oz (US) = gal (US) × 128
Multiply the gal (US) reading by 128.
1 gal (US) ≈ 128 fl oz (US)
1 × 128 ≈ 128
5 gal (US) ≈ 640 fl oz (US)
5 × 128 ≈ 640
No. A fluid ounce measures volume. Converting it to an ounce or gram of an ingredient requires that ingredient’s density.
Fixed reference · US liquid gallon to US fluid ounce
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| US liquid gallon (gal (US)) | US fluid ounce (fl oz (US)) |
|---|---|
| 0 | 0 |
| 0.1 | 12.8 |
| 0.5 | 64 |
| 1 | 128 |
| 2 | 256 |
| 5 | 640 |
| 10 | 1280 |
| 25 | 3200 |
| 50 | 6400 |
| 100 | 12800 |
| 1000 | 128000 |
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