Blame history. The liter is part of the metric system—clean, decimal-based, used by almost every country on Earth. The quart is a relic of the British imperial system, stubbornly held onto by the U.S. and a few other holdouts.
It’s like arguing about whether to measure distance in kilometers or miles. Both work, but one makes you do fractions at 8 a.m. on a Sunday. I know which one I’d rather avoid.
1 Quart Of Water In Liters
What about a quart in the UK? (Yes, it’s different.)
Oh, here’s where it gets actually wild. A British quart is bigger than a U.S. quart. It’s about 1.136 liters. So if you’re using an old English cookbook, a quart is suddenly much larger than a liter.
That means a recipe calling for a “quart” could mean two different amounts, depending on where the book was printed. Thanks, colonialism.