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15 Liters to Gallons

15 liters equals 3.96 gallons. Use the formula, worked example, and conversion table below to check the math.

15 L = 3.96 gal
L × 0.264172 = gal
Try: 10 L to gal 14 L to gal 16 L to gal 20 L to gal
15 L is also
15 L = 15,000 mL 15 L = 63.4 cup 15 L = 507.21 fl oz 15 L = 31.7 pt 15 L = 15.85 qt 15 L = 1,014.42 tbsp 15 L = 3,043.26 tsp
L
3.96 gal

How to Convert Liters to Gallons

L × 0.264172 = gal
  1. Start with 15 L
  2. Multiply by 0.264172: 15 × 0.264172 = 3.96
  3. Result: 15 L = 3.96 gal

The same formula works for any value. Multiply by 0.264172 to go from liters to gallons.

Quick Mental Conversion

For a rough estimate, multiply liters by 0.25. For example, 15 L × 0.25 = 3.75 gal. The exact answer is 3.96 gal.

Common Liter to Gallon Conversions

Liters (L) Gallons (gal)
1 L 0.2642 gal
2 L 0.5283 gal
5 L 1.32 gal
10 L 2.64 gal
15 L 3.96 gal
20 L 5.28 gal
25 L 6.6 gal
50 L 13.21 gal
75 L 19.81 gal
100 L 26.42 gal
250 L 66.04 gal
500 L 132.09 gal
1,000 L 264.17 gal
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Frequently Asked Questions

15 liters equals 3.96 gallons.
The formula is: L × 0.264172 = gal. See the L to gal formula page for worked examples.
Use the gallons to liters converter. The reverse formula is: gal × 3.785412 = L.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (L × 0.264172 = gal) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026