Convert any weight or mass unit and see the result in every common unit at once — kilograms, pounds, ounces, stones and tons.
MILLIGRAMS (MG)
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GRAMS (G)
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KILOGRAMS (KG) · SOURCE
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METRIC TONNES (T)
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OUNCES (OZ)
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POUNDS (LB)
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STONES (ST)
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US TONS (SHORT)
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UK TONS (LONG)
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Instant, exact conversions — everything runs in your browser.
Every value is converted through kilograms. The factors are the internationally defined ones: 1 pound (lb) = 0.45359237 kg exactly, 1 ounce (oz) = 28.349523125 g, 1 stone (st) = 6.35029318 kg (14 pounds):
Result = Value × Factor(from) ÷ Factor(to)
Use cases: body weight (kg ⇄ lbs ⇄ stones), recipes and cooking (grams ⇄ ounces), gym plates, shipping weights and freight (tonnes ⇄ US/UK tons). Note that "ton" alone is ambiguous: this converter shows metric tonne (1000 kg), US ton (907.18 kg) and UK long ton (1016.05 kg) separately.
All calculations happen instantly in your browser. Your values are never sent to any server and never stored.
Type the value, set the 'from' unit to kilograms — the pounds row updates instantly. Rule of thumb: multiply kg by 2.20462 (or by 2.2 for a quick estimate).
1 lb = 0.45359237 kg exactly. Divide pounds by 2.20462 — or just type the number here and read the kg row, no mental math needed.
A stone (st) is a British unit equal to 14 pounds (6.35 kg), still commonly used in the UK and Ireland for body weight. The converter shows stones alongside every other unit.
No. A metric tonne is 1000 kg, a US (short) ton is 907.18 kg, and a UK (long) ton is 1016.05 kg. The converter lists all three so nothing gets mixed up in shipping math.
Strictly, mass is the amount of matter (kg) and weight is the force gravity exerts on it. In everyday use — gym, kitchen, luggage — the units here are what scales show, so 'weight converter' is the practical name.
Yes — pound and ounce factors are exact international definitions. Results are displayed with sensible rounding for readability.