Liquid Volume Converter

Whether you're measuring water intake, adjusting a recipe, or comparing bottle sizes like the popular 40oz insulated bottle, our free online liquid volume converter makes switching between fluid units fast and effortless. Just enter a number, choose your units, and get instant, accurate results—no calculator needed. From ounces to liters, gallons to milliliters, or cups to fluid ounces, this tool is perfect for hydration tracking, precise cooking, and everyday volume conversions.

Supported Units

• Ounces (oz)

• Liters (L)

• Milliliters (mL)

• Gallons

• Cups

• Quarts

• Pints

Why Use This Converter?

• ✅ Instant conversion between metric and US units
• ✅ Mobile-friendly, single-row layout
• ✅ No ads, no clutter—just clean functionality
• ✅ Perfect for hydration tracking and bottle comparisons

Example Conversions

• 40oz = 1.18 liters
• 1 gallon = 128oz
• 500mL = 16.9oz

Try it now and make liquid measurement conversions effortless. Whether you're asking "How many ounces in a gallon?" or "How many liters is 40oz?", this tool has you covered.

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