Question 1

Is this weight or mass?

Accepted Answer

Strictly speaking, kilograms and pounds measure mass, not weight. In everyday use the terms are interchangeable, and that's how we treat them here. For physics homework: 1 kg of mass weighs about 9.81 N at sea level on Earth.

Question 2

Which "ton" is which?

Accepted Answer

A metric ton (t) is exactly 1000 kg. A US (short) ton is 2000 lb ≈ 907.185 kg. We list both. The UK (long) ton of 2240 lb is uncommon today and is not included.

Question 3

How is 1 pound = 0.45359237 kg defined?

Accepted Answer

That is the international avoirdupois pound, agreed by the US, UK, Canada, Australia, NZ, and South Africa in 1959. The 9-decimal value is exact.

Question 4

Can I share a specific conversion?

Accepted Answer

Yes — the URL updates as you change inputs. Click "Copy share link" to copy the current URL.

From	Value	To	Result
Kilograms	1	Pounds	2.2046 lb
Pounds	1	Kilograms	0.453592 kg
Grams	1	Ounces	0.035274 oz
Ounces	1	Grams	28.3495 g
Stones	1	Kilograms	6.3503 kg
Metric Tons	1	Pounds	2,204.62 lb
Kilograms	1	Stones	0.157473 st
Pounds	1	Ounces	16 oz

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