Pounds to Milliliters Converter
Convert pounds (lbs) to milliliters (mL) for water, milk, oil, and other liquids. Since pounds measure weight and milliliters measure volume, the conversion requires knowing the density of the substance. For water, 1 pound equals approximately 453.6 mL.
Related Converters:
Formula
For water (density = 1 g/mL): 1 lb = 453.59 mL. For oil (density = 0.91 g/mL): 1 lb = 498.45 mL.
Lbs to mL Reference Table (Water)
| Pounds | Milliliters | Liters |
|---|---|---|
| 0.5 lbs | 226.8 mL | 0.227 L |
| 1 lbs | 453.6 mL | 0.454 L |
| 2 lbs | 907.2 mL | 0.907 L |
| 3 lbs | 1360.8 mL | 1.361 L |
| 5 lbs | 2267.9 mL | 2.268 L |
| 10 lbs | 4535.9 mL | 4.536 L |
| 15 lbs | 6803.8 mL | 6.804 L |
| 20 lbs | 9071.8 mL | 9.072 L |
Frequently Asked Questions
How many mL is 1 pound of water?
1 pound of water equals approximately 453.6 milliliters.
How many mL is 1 pound of milk?
1 pound of milk equals approximately 440.4 mL (milk is denser than water).
Why does the conversion depend on the liquid?
Because pounds measure mass and milliliters measure volume. Different liquids have different densities, so the same weight occupies different volumes.
How many cups is 1 pound of water?
1 lb water = 453.6 mL ÷ 236.6 mL/cup ≈ 1.92 cups (just under 2 cups).
Does temperature affect the lbs-to-mL conversion?
Slightly. Water at 4°C has maximum density (1.000 g/mL). At room temperature (20°C) it's 0.998 g/mL. For cooking, the difference is negligible.
How do I convert mL back to pounds?
Reverse the formula: lbs = (mL × density) ÷ 453.59237. For water: 500 mL × 1.0 ÷ 453.59 = 1.10 lbs.
Pounds to mL for Common Liquids
| Liquid | Density (g/mL) | 1 lb = | 2 lbs = | 5 lbs = |
|---|---|---|---|---|
| Water | 1.000 | 453.6 mL | 907.2 mL | 2,268.0 mL |
| Whole Milk | 1.030 | 440.4 mL | 880.8 mL | 2,201.9 mL |
| Olive Oil | 0.920 | 492.8 mL | 985.6 mL | 2,464.1 mL |
| Honey | 1.420 | 319.4 mL | 638.9 mL | 1,597.2 mL |
| Gasoline | 0.750 | 604.8 mL | 1,209.6 mL | 3,024.0 mL |
| Maple Syrup | 1.370 | 331.1 mL | 662.2 mL | 1,655.4 mL |
| Heavy Cream | 0.994 | 456.3 mL | 912.7 mL | 2,281.7 mL |
| Vegetable Oil | 0.910 | 498.5 mL | 996.9 mL | 2,492.3 mL |
Worked Examples
Example 1: A recipe calls for 2 lbs of honey. How many mL?
2 × 453.59 ÷ 1.42 = 638.9 mL
That's about 2.7 cups of honey.
Example 2: You need 5 lbs of olive oil for soap making. Volume in mL?
5 × 453.59 ÷ 0.92 = 2,464.1 mL
That's about 2.46 liters of olive oil.
Example 3: A car needs 10 lbs of gasoline for a test. How many mL?
10 × 453.59 ÷ 0.75 = 6,047.9 mL
That's about 6.05 liters of gasoline.
Why You Can't Simply Convert Pounds to Milliliters
Pounds measure mass (how much stuff), while milliliters measure volume (how much space it takes up). You cannot convert directly between them without knowing the substance's density — the amount of mass packed into each unit of volume.
Honey is denser than water (1.42 g/mL vs 1.00 g/mL), so the same weight of honey occupies less volume than water. Conversely, oil is less dense (0.91–0.92 g/mL), so the same weight of oil takes up more space.
Temperature also affects density slightly. Warm liquids expand and become less dense, so the same weight fills a slightly larger volume. For most cooking and everyday purposes, this difference is negligible — but in laboratory or industrial settings it matters.
This is why precise recipes should specify ingredients by weight or volume, not assume they are interchangeable. A cup of honey weighs much more than a cup of water.
Using This Conversion in Cooking
Professional bakers prefer measuring by weight (pounds or grams) rather than volume (cups or mL) because it's far more accurate. A cup of flour can vary by 30% depending on how it's scooped.
When a recipe says "1 lb butter," that's exactly 453.6 mL or about 2 cups (US). Butter's density is close to water, making this an easy mental shortcut.
Flour is trickier: 1 lb of flour measures approximately 830 mL when sifted but only about 600 mL when packed. This dramatic difference is exactly why bakers weigh dry ingredients.
For liquid ingredients with water-like density (milk, juice, broth), 1 lb ≈ 2 cups is a reliable quick estimate.