There are approximately 1.057 quarts in 1 liter.

Quick reference:

• 1 liter ≈ 1.057 quarts (US liquid quarts)
• 1 quart ≈ 0.946 liters

If you need to convert liters to quarts, multiply the number of liters by 1.057.
If you need to convert quarts to liters, multiply the number of quarts by 0.946.