Weight Converter
Convert weight units instantly with DigiCalc's free weight converter. kg to lbs, grams to ounces, stone to kg and more. No signup needed.
A weight converter lets you switch between kilograms, pounds, grams, ounces, stone, and other units in seconds. Whether tracking body weight, calculating shipping costs, or following a recipe, DigiCalc's weight converter handles every common unit pair with precision. This free unit conversion tool covers metric and imperial weight measurement with no signup required.
What Is a Weight Converter?
A weight converter is a tool that applies a fixed mathematical ratio to change a measurement from one unit to another. All conversion factors are defined by the International System of Units (SI) and maintained by the National Institute of Standards and Technology (NIST). Because these ratios are exact, digital converters produce the same result every time with no manual rounding error.
The most common unit pairs are kilograms to pounds, grams to ounces, and stone to kilograms. Each pair has a unique conversion factor based on the legal definition of those units.
kilograms to pounds - How the Conversion Works
Converting kilograms to pounds is the most searched weight conversion globally, with over 1.5 million monthly searches. If you are wondering how many pounds in a kilogram, the answer is 2.20462 lbs. This ratio comes from the legal definition of the international avoirdupois pound, which is precisely 0.45359237 kilograms, as standardised by NIST. To convert kg to lbs, multiply the kilogram value by 2.20462. Kilos to pounds conversions follow this same formula regardless of the value.
Formula: pounds = kilograms x 2.20462
Example: 70 kg x 2.20462 = 154.32 lbs
Reverse formula: kilograms = pounds / 2.20462
Example: 154.32 lbs / 2.20462 = 70 kg
kg to lbs Conversion Table
The table below covers the most searched kilogram values, from newborn birth weights to heavyweight athlete ranges.
| Kilograms (kg) | Pounds (lbs) |
|---|---|
| 1 kg | 2.205 lbs |
| 5 kg | 11.023 lbs |
| 10 kg | 22.046 lbs |
| 20 kg | 44.092 lbs |
| 30 kg | 66.139 lbs |
| 40 kg | 88.185 lbs |
| 50 kg | 110.231 lbs |
| 60 kg | 132.277 lbs |
| 70 kg | 154.324 lbs |
| 75 kg | 165.347 lbs |
| 80 kg | 176.370 lbs |
| 90 kg | 198.416 lbs |
| 100 kg | 220.462 lbs |
| 120 kg | 264.555 lbs |
| 150 kg | 330.693 lbs |
1 kg to lbs
1 kg equals 2.20462 pounds. Stated differently, 1 kg in pounds is 2.205 lbs. If you are searching for 1 kilo to pounds, the answer is the same: 2.20462 lbs. And if you are asking 1 kg equals how many pounds, that is 2.205 rounded to 3 decimal places. This base ratio applies to every kilogram-to-pound calculation. One kilogram is approximately 2 pounds and 3.3 ounces.
| kg | lbs |
|---|---|
| 0.5 kg | 1.102 lbs |
| 1 kg | 2.205 lbs |
| 1.5 kg | 3.307 lbs |
| 2 kg | 4.409 lbs |
| 2.5 kg | 5.512 lbs |
0.5 kg to lbs
0.5 kg equals 1.10231 pounds. Half a kilogram is just over 1 pound and 1.6 ounces. This value appears often in food weights, postal limits, and ingredient portions. For shipping or nutrition labelling, always use the full decimal rather than rounding to 1.1 lbs, since even small differences affect pricing and compliance.
| kg | lbs |
|---|---|
| 0.25 kg | 0.551 lbs |
| 0.5 kg | 1.102 lbs |
| 0.75 kg | 1.653 lbs |
| 1 kg | 2.205 lbs |
lbs to kg - Reverse Conversion
To convert pounds to kilograms, divide by 2.20462 or multiply by 0.453592. This is the standard reverse formula used in medicine, fitness, and international shipping.
Formula: kilograms = pounds / 2.20462
Example: 155 lbs / 2.20462 = 70.31 kg
| Pounds (lbs) | Kilograms (kg) |
|---|---|
| 1 lb | 0.454 kg |
| 5 lbs | 2.268 kg |
| 10 lbs | 4.536 kg |
| 50 lbs | 22.680 kg |
| 100 lbs | 45.359 kg |
| 150 lbs | 68.039 kg |
| 200 lbs | 90.718 kg |
For dedicated body weight tracking, use DigiCalc's kg to lbs converter which also shows BMI context for each weight value.
Grams to Ounces - Conversion Formula and Table
One gram equals 0.035274 ounces. Conversely, converting ounces to grams: one ounce equals 28.3495 grams. If you need to know 1 gram equals how many ounces, the answer is 0.035274 oz. These values apply to the avoirdupois ounce, which is the standard unit for everyday weights in countries that use the imperial system. Note that the troy ounce (used for gold and silver) is different and equals 31.1035 grams.
Formula: ounces = grams x 0.035274
Reverse: grams = ounces x 28.3495
| Grams (g) | Ounces (oz) |
|---|---|
| 1 g | 0.035 oz |
| 10 g | 0.353 oz |
| 28.35 g | 1 oz |
| 50 g | 1.764 oz |
| 100 g | 3.527 oz |
| 200 g | 7.055 oz |
| 250 g | 8.818 oz |
| 500 g | 17.637 oz |
| 1,000 g | 35.274 oz |
weight conversion chart - Full Reference
This conversion table weight reference covers all major unit pairs in a single table for quick lookup across metric, imperial, and stone measurements.
| Unit | Kilograms (kg) | Pounds (lbs) | Grams (g) | Ounces (oz) |
|---|---|---|---|---|
| 1 kilogram | 1 | 2.205 | 1,000 | 35.274 |
| 1 pound | 0.454 | 1 | 453.592 | 16 |
| 1 gram | 0.001 | 0.0022 | 1 | 0.035 |
| 1 ounce | 0.028 | 0.0625 | 28.350 | 1 |
| 1 stone | 6.350 | 14 | 6,350 | 224 |
| 1 metric tonne | 1,000 | 2,204.62 | 1,000,000 | 35,274 |
weight conversion calculator - How to Use It
DigiCalc's weight conversion calculator converts between any two units instantly. Here is how to use it:
- Type the value you want to convert in the input field.
- Select your starting unit from the dropdown (kg, lbs, grams, ounces, stone, tonne, and more).
- Select the target unit.
- The result appears instantly and updates as you type.
No button press required. The calculator uses the same conversion factors defined by NIST and produces results accurate to 6 decimal places.
Real-World Weight Conversion Examples
These examples show the most common scenarios where weight conversion is needed in everyday life.
- Body weight (75 kg to lbs): 75 kg = 165.35 lbs. Common when comparing weight across apps or fitness programmes that use different unit systems.
- Checked airline baggage (23 kg to lbs): 23 kg = 50.71 lbs. The standard international checked baggage limit on most airlines is 23 kg (50 lbs), so knowing this conversion prevents overweight fees.
- Newborn birth weight (3.5 kg to lbs): 3.5 kg = 7.72 lbs. The global average newborn weight is 3.3 to 3.6 kg. Parents and medical records often need this in both units.
- Recipe portion (200 g to oz): 200 g = 7.05 oz. International recipes frequently list portions in grams while US users prefer ounces.
- Heavyweight boxing limit (90.7 kg to lbs): 90.7 kg = 200 lbs. The cruiserweight division limit in professional boxing is 200 lbs (90.7 kg).
- Stone to kg for UK users (11 stone to kg): 11 stone = 69.85 kg. Stone is still widely used for body weight in the UK and Ireland alongside kilograms.
- International parcel shipping (0.5 kg to lbs): 0.5 kg = 1.102 lbs. Many courier services have pricing brackets at 0.5 kg increments, making this one of the most searched precise values.
Weight Units Explained: kg, lbs, Grams, Ounces, and Stone
Kilogram (kg): The SI base unit of mass, redefined in 2019 by a fixed numerical value of the Planck constant. Used globally in science, medicine, and everyday trade in most countries.
Pound (lb): The primary unit of weight in the United States. One pound equals exactly 453.592 grams. The US customary pound and the international avoirdupois pound are identical.
Gram (g): One thousandth of a kilogram. The standard unit for small weights such as food portions, medication dosages, and postal items under 1 kg.
Ounce (oz): One sixteenth of a pound, equal to approximately 28.35 grams. Used in the US and UK for food packaging, nutrition labels, and small parcel weights. Note: fluid ounces measure volume, not weight.
Stone (st): A unit equal to 14 pounds or 6.35 kg. Primarily used in the UK and Ireland for body weight. A person weighing 75 kg is approximately 11 stone 11 pounds.
Metric tonne (t): Equal to 1,000 kilograms or 2,204.62 pounds. Used for large cargo, vehicle weights, and industrial measurements. Not to be confused with the US short ton (907.185 kg) or UK long ton (1,016 kg).
Why Different Countries Use Different Weight Units
The metric system, based on the kilogram, was formally established in France in 1795 and became the global standard for science and international trade. Today, 195 countries officially use the metric system as their primary measurement standard.
The United States adopted a customary system derived from English imperial units before the metric system was standardised internationally. Despite the Metric Conversion Act of 1975 and the Omnibus Trade and Competitiveness Act of 1988, the US has never mandated a full transition. As a result, pounds and ounces remain the everyday standard for US consumers, while kilograms are used in medicine, nutrition facts labels, and international commerce.
The United Kingdom uses a hybrid approach. Kilograms and grams appear on food packaging and in scientific contexts. Stone and pounds remain the informal standard for body weight in everyday conversation, and road distances use miles. This mix of systems is why weight conversion tools rank among the most searched utilities globally. Kilograms to pounds alone generates over 1.5 million searches every month.
Limitations of This Weight Converter
- Mass vs. weight distinction: In physics, weight is a force measured in Newtons, while mass is measured in kilograms. This tool is a mass conversion calculator, not a force converter. Weight measurement in everyday speech refers to mass, so the terms are used interchangeably here. The technical distinction only matters in engineering or space science contexts.
- Troy ounce vs. avoirdupois ounce: This tool uses the avoirdupois ounce (28.3495 g), the standard for everyday goods. Gold, silver, and other precious metals use the troy ounce (31.1035 g). Always confirm which ounce a source means when converting precious metals.
- US short ton vs. metric tonne: A US short ton is 907.185 kg, while a metric tonne is 1,000 kg. Results marked "ton" will differ depending on which system the source document uses.
- Rounding: Results are displayed to up to 6 decimal places. For legal trade, laboratory, or pharmaceutical use, always verify with certified calibrated scales.
- Fluid ounces: This tool does not convert fluid ounces. Fluid ounce is a unit of volume, not weight. Use a dedicated volume converter for liquid measurements.
To find your healthy weight range based on height and current weight, use DigiCalc's ideal weight calculator. For all weight unit conversions, browse the full list in the section below.
All Weight Converters on DigiCalc
DigiCalc covers every common weight and mass conversion. Use the links below to go directly to the converter you need.
Kilograms and Pounds
- kg to lbs converter - convert kilograms to pounds instantly
- ounces to kg converter - convert ounces to kilograms
- kg to ounces converter - convert kilograms to ounces
- ounces to pounds converter - convert oz to lbs
- grams to lbs converter - convert grams to pounds
Grams and Kilograms
- grams to kg converter - convert grams to kilograms
- grams to milligrams converter - convert g to mg
- milligrams to kilograms converter - convert mg to kg
- micrograms to grams converter - convert mcg to g
- nanograms to kilograms converter - convert ng to kg
Tons and Large Units
- pounds to tons converter - convert lbs to short tons
- tons to pounds converter - convert short tons to lbs
- metric tonnes to kilograms converter - convert t to kg
Specialty Units
- stone to lbs converter - convert UK stone to pounds
- grains to grams converter - convert gr to g
- ounces to quarter converter - convert oz to US quarter