Liter till gallonomvandlare
Convert liters to gallons (US and UK) and gallons to liters instantly.
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Liters to Gallons: US vs Imperial Gallons
There are two types of gallons: the US gallon (3.78541 liters) and the UK/Imperial gallon (4.54609 liters). This distinction matters significantly — a US gallon is about 17% smaller than an Imperial gallon. Our converter uses the US gallon by default, which is standard in the United States and most international contexts.
To convert liters to US gallons: divide by 3.78541. To convert liters to Imperial gallons: divide by 4.54609. For the reverse, multiply by the same factor.
| Liters | US Gallons | UK Gallons | Running Context |
|---|---|---|---|
| 0.5 L | 0.13 gal | 0.11 gal | Small water bottle |
| 1 L | 0.26 gal | 0.22 gal | Standard water bottle |
| 2 L | 0.53 gal | 0.44 gal | Hydration pack capacity |
| 3 L | 0.79 gal | 0.66 gal | Daily water intake target |
| 3.785 L | 1.00 gal | 0.83 gal | 1 US gallon |
| 10 L | 2.64 gal | 2.20 gal | Hydration for 100-mile ultra |
Hydration for Runners: How Much Water You Need
Proper hydration is critical for running performance and safety. General guidance from sports science recommends drinking 400–800 ml (0.1–0.2 gallons) per hour during moderate-intensity running, adjusted for heat, humidity, and sweat rate. Elite marathon runners may consume 1–1.5 liters per hour in hot conditions.
Daily baseline water intake recommendations range from 2.7 liters (0.71 gallons) for women to 3.7 liters (0.98 gallons) for men, per the U.S. National Academies. Active runners should add 500–1000 ml (0.13–0.26 gallons) per hour of training to this baseline. Hyponatremia (over-hydration) is a risk in ultra-endurance events — do not drink more than your sweat rate.
Senast uppdaterad: March 2026
Frequently Asked Questions
How many liters are in a gallon?
1 US gallon = 3.78541 liters. 1 Imperial (UK) gallon = 4.54609 liters. Always verify which gallon type is being referenced in recipes, fuel specifications, or water containers.
How much should I drink during a marathon?
Most marathon runners need 500–800 ml (0.13–0.21 gallons) per hour. Over a 4-hour marathon, that is 2–3.2 liters (0.53–0.85 gallons) total, taken at aid stations approximately every 5K. Adjust based on weather — hot conditions may require up to 1 liter per hour.
What is 1 gallon of water in liters?
1 US gallon = 3.785 liters. This is a common target for daily water intake in some fitness communities, though 2–3 liters per day is sufficient for most moderately active people.
How do I know if I am dehydrated during a run?
Signs of dehydration include dark urine, dizziness, dry mouth, and reduced performance. Losing more than 2% of body weight in fluids noticeably impairs performance. Weigh yourself before and after long runs — 1 kg (2.2 lbs) of weight loss equals approximately 1 liter of fluid deficit.