280 g = 0.28 kg (gram → kilogram)
280 g = 0.28 kg
280 grams (g) equals 0.28 kilograms (kg). The conversion uses the exact factor 0.001: 280 × 0.001 = 0.28.
Kilograms = Grams × 0.001How 280 grams compares to its arithmetic neighbours, converted to kilograms.
| Relation | grams | kilograms |
|---|---|---|
| ÷10 | 28 g | 0.028 kg |
| ÷2 (half) | 140 g | 0.14 kg |
| ×1 (this value) | 280 g | 0.28 kg |
| ×2 (double) | 560 g | 0.56 kg |
| ×5 | 1400 g | 1.4 kg |
| ×10 | 2800 g | 2.8 kg |
Grams to kilograms divides by 1000. A 250 g portion is 0.25 kg; a 750 g loaf is 0.75 kg. The conversion is trivially decimal but worth doing when aggregating nutrition data across a day's intake or scaling a recipe from per-serving grams to a per-batch kilogram figure. Stick to one unit throughout a calculation — mixing g and kg in a spreadsheet is one of the most common dietary-tracking bugs.
Kitchen scales and pharmacy dispensing sit right at this boundary — recipes list flour and sugar in grams until the total crosses about 1,000 g, at which point bakers switch to kilograms for readability. 250 g of butter is 0.25 kg; a 750 g loaf tin is 0.75 kg; 1,200 g of dough is 1.2 kg. Nutrition labels stay in grams per serving even when the whole pack is well over a kilogram, so don't assume the printed unit tells you the product's true scale.
Start with your value in grams.
Multiply the gram value by 0.001. This is the exact conversion factor from grams to kilograms.
The product is your value in kilograms. For example, 5 g × 0.001 = 0.005 kg.
The exact factor from grams to kilograms is 0.001.
Kilograms = Grams × 0.001
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Grams (g) | Kilograms (kg) |
|---|---|
| 0.1 g | 0.0001 kg |
| 0.25 g | 0.00025 kg |
| 0.5 g | 0.0005 kg |
| 1 g | 0.001 kg |
| 1.5 g | 0.0015 kg |
| 2 g | 0.002 kg |
| 2.5 g | 0.0025 kg |
| 3 g | 0.003 kg |
| 4 g | 0.004 kg |
| 5 g | 0.005 kg |
| 6 g | 0.006 kg |
| 7 g | 0.007 kg |
| 8 g | 0.008 kg |
| 9 g | 0.009 kg |
| 10 g | 0.01 kg |
| 12 g | 0.012 kg |
| 15 g | 0.015 kg |
| 18 g | 0.018 kg |
| 20 g | 0.02 kg |
| 25 g | 0.025 kg |
| 30 g | 0.03 kg |
| 35 g | 0.035 kg |
| 40 g | 0.04 kg |
| 45 g | 0.045 kg |
| 50 g | 0.05 kg |
| 60 g | 0.06 kg |
| 70 g | 0.07 kg |
| 75 g | 0.075 kg |
| 80 g | 0.08 kg |
| 90 g | 0.09 kg |
| 100 g | 0.1 kg |
| 120 g | 0.12 kg |
| 125 g | 0.125 kg |
| 150 g | 0.15 kg |
| 175 g | 0.175 kg |
| 180 g | 0.18 kg |
| 200 g | 0.2 kg |
| 225 g | 0.225 kg |
| 250 g | 0.25 kg |
| 275 g | 0.275 kg |
| 300 g | 0.3 kg |
| 350 g | 0.35 kg |
| 400 g | 0.4 kg |
| 450 g | 0.45 kg |
| 500 g | 0.5 kg |
| 600 g | 0.6 kg |
| 750 g | 0.75 kg |
| 1000 g | 1 kg |
| 2000 g | 2 kg |
| 5000 g | 5 kg |
A standard paperclip is about 1 g. A US nickel weighs 5 g. A small pencil weighs around 7 g.
The gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. It is the everyday unit for food labeling, postage, jewelry, and laboratory measurements. The 2019 SI redefinition fixed the kilogram (and therefore the gram) in terms of Planck's constant, ending more than a century of dependence on a physical prototype.
The kilogram (kg) is the SI base unit of mass. Since the 2019 redefinition it is defined by fixing the Planck constant to exactly 6.62607015 × 10⁻³⁴ J·s, replacing the old International Prototype Kilogram artifact. In everyday use, the kilogram is the global standard for body weight, groceries, and engineering specifications.
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