Kilograms to Hectograms
An instant kilograms-to-hectograms converter, with the formula and a reference table below.
| Kilograms | Hectograms |
|---|---|
| 1 kg | 10 hg |
| 2 kg | 20 hg |
| 3 kg | 30 hg |
| 5 kg | 50 hg |
| 10 kg | 100 hg |
| 25 kg | 250 hg |
| 50 kg | 500 hg |
| 100 kg | 1000 hg |
How to use
- Enter a value in the Kilograms field.
- The Hectograms figure appears immediately — no button to press.
- Typing in the Hectograms field converts back to Kilograms the same way.
- Use the reference table for the values that come up most often.
Kilograms to Hectograms formula
To convert kilograms to hectograms, multiply by 10.
hg = kg × 10
Put another way, one kilogram is exactly 10 hectograms.
Why this factor: the kilogram and the hectogram are both defined against the kilogram, so dividing one definition by the other gives 10 directly. Both definitions are set out in full below.
To go the other way, divide by 10 — or use the Hectograms to Kilograms converter, which is the same calculation reversed.
Worked example
Take 150 kg and multiply by the factor 10: the result is 1500 hg.
150 kg × 10 = 1500 hg
The converter above does this for any value you type, in either direction.
What is a kilogram?
The kilogram is the SI base unit of mass — the reference for every other mass unit.
Definition: Since 2019 the kilogram has been defined by fixing the Planck constant at exactly 6.62607015×10⁻³⁴ joule-seconds, retiring the physical platinum-iridium cylinder that defined it for 130 years.
Where it is used: Universal in science, trade and everyday weighing outside the United States.
What is a hectogram?
A hectogram is 100 grams — one tenth of a kilogram.
Definition: Exactly 0.1 kilogram by SI prefix definition.
Where it is used: Seen on Italian and some other European food labels and deli scales, where prices are quoted per 'etto'.
Kilograms vs Hectograms
The kilogram is an SI unit while the hectogram is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many hectograms are in a kilogram?
One kilogram equals 10 hectograms.
What is the formula to convert kilograms to hectograms?
Multiply the number of kilograms by 10. To reverse it, divide by 10 instead.
How do I convert hectograms back to kilograms?
Divide by 10, which is the same as multiplying by 0.1.
How many hectograms are in 10 kilograms?
10 kg works out to 100 hg.
How is the kilogram defined?
Since 2019 the kilogram has been defined by fixing the Planck constant at exactly 6.62607015×10⁻³⁴ joule-seconds, retiring the physical platinum-iridium cylinder that defined it for 130 years.