Switching to kg helps match Canadian packaging labels.
How do I convert Pounds to Kilograms?
Quick explanation
Use pounds to kilograms to align US recipe weights with metric labels, nutrition plans, or container markings. This keeps grocery comparisons and prep logs consistent when your tools are in kg. For the inverse conversion, go to kilograms to pounds, or browse the kitchen weight hub.
lb to kg
Converted value
0.45 kg
~ 0 kg
Scale preview
Quick equivalents
Quick kitchen estimate. For precise nutrition or production work, verify standards and source measurements.
Calculation steps
How to convert pounds to kilograms manually
kilograms = pounds × 0.45359237
1 lb is defined as exactly 0.45359237 kg.
Practical kitchen shortcut
kilograms ≈ pounds ÷ 2.205
Useful for quick mental math (rounded).
Worked example
Input: 5
Exact: 5 × 0.45359237 = 2.26796185 → 2.268 kg
Approx: 5 ÷ 2.205 = 2.268 → 2.268 kg
About these units
Pound (lb)
Pound (lb) is a unit of mass used in U.S. customary and British imperial measurement systems.
- 1 lb = 16 oz
- 1 lb = 0.45359237 kg (exact)
Kilogram (kg)
Kilogram (kg) is the SI unit of mass and is widely used for food labels, packaging, and nutrition tracking.
- 1 kg = 1000 g
- 1 kg ≈ 2.205 lb
Tips
When scaling recipes, convert to metric first (mL/g), scale, then convert back if needed.
Liquids are easiest by volume. For baking, grams are often more consistent than cups.
Quick Reference
| lb | kg |
|---|---|
| 1 | 0.45 |
| 2 | 0.91 |
| 5 | 2.27 |
| 10 | 4.54 |
| 15 | 6.8 |
| 20 | 9.07 |
| 25 | 11.34 |
| 50 | 22.68 |
FAQ
How many kilograms are in a pound?
1 lb = 0.45359237 kg (exact).
Is a pound exactly 0.454 kg?
It’s exactly 0.45359237 kg; 0.454 is rounded.
Why do calculators show different results?
Rounding (2.205 vs 2.2046226) changes decimals.
How many kilograms is 10 pounds?
10 pounds is about 4.536 kilograms.
Should I round kilogram results?
For kitchen use, two to three decimals are usually enough unless you need high precision.