Weight Converter

Weight Converter – Pounds, Kilograms, Ounces, Stone & More

Whether you're tracking your weight at the gym, converting a recipe, or figuring out luggage limits for a flight, this converter handles all common weight and mass units instantly. Enter a value in any unit and see all conversions at once.

Weight Unit Reference

Unit	Abbreviation	Equals in Pounds	Equals in Kilograms
Ounce	oz	0.0625 lb	0.02835 kg
Pound	lb	1 lb	0.4536 kg
Stone	st	14 lb	6.350 kg
Kilogram	kg	2.2046 lb	1 kg
Gram	g	0.002205 lb	0.001 kg
Milligram	mg	—	0.000001 kg
Metric ton	t	2,204.6 lb	1,000 kg
US ton (short)	ton	2,000 lb	907.2 kg

Quick Conversion Formulas

Pounds → Kilograms: Multiply by 0.4536 (or divide by 2.205)

Kilograms → Pounds: Multiply by 2.2046

Ounces → Grams: Multiply by 28.35

Grams → Ounces: Multiply by 0.03527

Worked Example

Convert 175 pounds to kilograms:

175 × 0.4536 = 79.4 kg

Convert 5 kg 250 g of flour to pounds and ounces:

5.25 kg × 2.2046 = 11.57 lbs → 11 lbs 9 oz

Common Weight References

Item	Weight (lbs)	Weight (kg)
Gallon of water	8.34 lb	3.79 kg
Gallon of milk	8.6 lb	3.9 kg
Bag of sugar (standard)	5 lb	2.27 kg
Bag of flour (standard)	5 lb	2.27 kg
Newborn baby (average)	7.5 lb	3.4 kg
Bowling ball	6–16 lb	2.7–7.3 kg
Carry-on luggage limit (most airlines)	15–22 lb	7–10 kg
Checked bag limit (most airlines)	50 lb	23 kg

Cooking Measurement Conversions

American recipes use ounces and pounds while most international recipes use grams. Here are the most common baking conversions:

Ingredient	1 Cup (US)	In Grams	In Ounces
All-purpose flour	1 cup	120 g	4.2 oz
Granulated sugar	1 cup	200 g	7.1 oz
Brown sugar (packed)	1 cup	220 g	7.8 oz
Butter	1 cup (2 sticks)	227 g	8 oz
Rice (uncooked)	1 cup	185 g	6.5 oz
Chocolate chips	1 cup	170 g	6 oz

US Ton vs. Metric Ton

Americans use the short ton (2,000 lbs / 907 kg), while most of the world uses the metric ton or "tonne" (2,204.6 lbs / 1,000 kg). The difference is about 10%, which matters significantly in shipping, commodities trading, and industrial applications. The UK historically used the long ton (2,240 lbs / 1,016 kg), though it has largely been replaced by the metric ton.

Mass vs. Weight — The Technical Difference

In everyday conversation, "weight" and "mass" are interchangeable. Scientifically, however, mass measures the amount of matter (constant everywhere) while weight is the force of gravity on that mass (varies by location). A 150 lb person on Earth would weigh only 25 lbs on the Moon but would still have the same mass.

Frequently Asked Questions

How many pounds are in a kilogram?

One kilogram equals 2.20462 pounds. Conversely, one pound equals 0.453592 kilograms. A quick estimate: double the kg and add 10%. For example, 70 kg × 2 = 140, plus 10% = 154 lbs (actual: 154.3 lbs).

How do I convert my weight from pounds to kilograms?

Divide your weight in pounds by 2.20462, or multiply by 0.4536. For example, 180 lbs ÷ 2.205 = 81.6 kg.

What is a stone in pounds and kilograms?

One stone equals 14 pounds or 6.35 kilograms. Stones are commonly used to measure body weight in the United Kingdom and Ireland. For example, 10 stone = 140 lbs = 63.5 kg.

How many ounces are in a pound?

There are 16 ounces in 1 pound. In the metric system, 1 ounce equals 28.3495 grams. There are also troy ounces (31.1 g), used specifically for precious metals like gold and silver.

What is the difference between mass and weight?

Mass measures the amount of matter in an object (in kg or lbs) and stays constant regardless of location. Weight is the force of gravity on that mass and changes depending on gravitational pull — you would weigh less on the Moon but your mass stays the same.

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