Volume
hLtogal (UK)
Convert hectolitres (hL) to imperial gallons (gal (UK)).
Factor1 hL = 21.99692 gal (UK)
Converter
hL
Accepts numbers or expressions, e.g. 150 + 14.7
Result
gal (UK)
Rendered to 6 significant figures.
Formula
Formula
gal (UK) = hL × 21.99692
Multiply any value in hectolitres by 21.99692 to obtain the value in imperial gallons.
Worked example
Convert 1 hL to gal (UK).
- 01Start with 1 hL.
- 02Multiply by the conversion factor: 1 × 21.99692 = 21.9969 gal (UK).
Result1 hL = 21.9969 gal (UK)
Conversion table
| hL | gal (UK) |
|---|---|
| 1 | 21.997 |
| 2 | 43.994 |
| 5 | 109.98 |
| 10 | 219.97 |
| 20 | 439.94 |
| 50 | 1099.8 |
| 100 | 2199.7 |
| 200 | 4399.4 |
| 500 | 10998 |
| 1000 | 21997 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from hL to gal (UK)?
1 hL equals 21.99692 gal (UK). To convert, multiply the value in hectolitres by 21.99692.
How do I convert 1 hL to gal (UK)?
1 hL = 21.9969 gal (UK). For any value, multiply by 21.99692.
How do I convert gal (UK) back to hL?
Divide by the same factor — or equivalently, multiply by 0.0454609. So 1 gal (UK) = 0.0454609 hL.
When would I need to convert hectolitre to imperial gallon?
Volume conversions are used for tank sizing, batch calculations, and bridging between vendor specs (gallons, barrels, ft³) and process documentation (m³, litres).
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).