Weight & Mass

Weight Converter

Convert between 22+ weight and mass units — metric, imperial, troy, gemological, and scientific.

kg
lb

How to Convert

Conversion Formula

Current Category

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1 kg =

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1 kg =

Conversion Table

Reference
From To

All Weight Units — Relative to 1 kg

Reference
Unit Symbol Category 1 kg equals

Kilogram Conversions

kg → Pounds Pounds → kg kg → Grams Grams → kg kg → Ounces Ounces → kg kg → Metric Ton Metric Ton → kg kg → Stone Stone → kg kg → Milligrams Milligrams → kg

Pound & Ounce

Pounds → Ounces Ounces → Pounds Pounds → Grams Grams → Pounds Pounds → Stone Stone → Pounds Pounds → Short Ton Short Ton → Pounds Ounces → Grams Grams → Ounces Pounds → mg Grains → Milligrams

Ton Conversions

Metric Ton → Pounds Pounds → Metric Ton Short Ton → Long Ton Long Ton → Short Ton Short Ton → Metric Ton Metric Ton → Short Ton Long Ton → Metric Ton Metric Ton → Long Ton Short Ton → kg Long Ton → kg Quintal → kg kg → Quintal

Troy & Precious Metals

Troy Oz → Grams Grams → Troy Oz Troy Oz → Av. Oz Av. Oz → Troy Oz Troy Oz → kg kg → Troy Oz Pennyweight → g Grams → Pennyweight Troy Pound → kg Troy Grain → mg Troy Oz → Pennyweight Troy Oz → Grains

Gemological

Carat → Grams Grams → Carat Carat → Milligrams Milligrams → Carat Carat → Ounces Ounces → Carat Carat → Grains Carat → Troy Oz

Gram & Milligram

Grams → Milligrams Milligrams → Grams Grams → Micrograms Micrograms → Grams Grams → Grains Grains → Grams mg → Micrograms Micrograms → mg

Weight Unit Facts

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kg vs lb

1 kilogram = 2.20462 pounds. The US uses pounds for everyday weight; most of the world uses kilograms. India officially uses kg but lbs appear in gyms and medical contexts.

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Troy oz vs Ounce

Gold prices are quoted per troy ounce (31.10 g), not avoirdupois ounce (28.35 g). A troy ounce is ~10% heavier — critical when buying gold or silver.

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Carat vs Karat

Carat (ct) measures gemstone mass — 1 ct = 0.2 g. Karat (k) measures gold purity — 24k = pure gold. These are completely different measurement systems.

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Quintal in India

India's commodity markets (APMC mandis) quote grain and pulse prices per quintal (100 kg). MSP (Minimum Support Price) for wheat and rice is set per quintal by the government.

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Tons Explained

Three "tons" exist: Metric Ton (1,000 kg), Short Ton/US Ton (907 kg), Long Ton/Imperial Ton (1,016 kg). Always clarify which ton is meant in contracts and freight.

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Atomic Mass Unit

One AMU (u) ≈ 1.66 × 10⁻²⁷ kg. A proton weighs ~1.007 u, an electron ~0.000549 u. Molecular weight of water (H₂O) = 18.015 u.

What is the Weight Converter?

The Weight Converter is a free online tool for instantly converting between all common weight and mass units — kilograms, pounds, grams, ounces, metric tons, stone, carats, troy ounces, grains, and more. It is useful for cooking recipes, fitness tracking, international shipping, and scientific work. Simply enter your value and choose the units to see all conversions in real time. No formulas to remember, no installation required — everything works directly in your browser.

Frequently Asked Questions

How many pounds are in a kilogram?

There are approximately 2.2046 pounds in one kilogram. To convert kg to lbs, multiply by 2.2046.

What is the formula to convert kg to lbs?

The formula is: lbs = kg × 2.2046. For example, 70 kg × 2.2046 = 154.32 lbs.

How many kilograms are in a stone?

One stone equals approximately 6.35029 kilograms. Stone is commonly used in the UK and Ireland for measuring body weight.

How many grams are in an ounce?

One ounce equals approximately 28.3495 grams. To convert ounces to grams, multiply by 28.35.

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