Mass application rate.
Kilograms per Hectare to Kilograms per Acre Converter — kg/ha to kg/ac
Convert Kilogram per Hectare (kg/ha) to Kilogram per Acre (kg/ac) using the exact conversion factor (1 kilogram per hectare = 0.4046856422 kilogram per acre). See the formula, worked examples, conversion table, unit comparison, and common uses.
Kilograms per Hectare to Kilograms per Acre converter
Converter
Agriculture Converter
Convert acres, hectares, yield, seed, fertilizer, irrigation, and application-rate units.
Context values
Some unit families need one extra value for a physically accurate result.
Mass application rate.
Result = input x 0.0001 / 0.0002471053815.
Mass Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Hectare to Kilograms per Acre
Kilogram per Hectare and Kilogram per Acre both measure a farming-related quantity — a land area or an application/yield rate per unit area — used to report crop yields, calculate how much fertilizer or seed a field needs, and plan irrigation. Kilogram per Hectare is most often used for fertilizer and pesticide application-rate labeling.
Formula
kilograms per acre = kilograms per hectare × 0.40468564224
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per hectare equals 0.0001 base units, and 1 kilogram per acre equals 0.000247105381467 base units, so dividing one by the other gives the direct kilogram per hectare-to-kilogram per acre factor of 0.40468564224.
Simple example
1 kg/ha × 0.4046856422 = 0.4046856422 kg/ac
1 kilogram per hectare = 0.4046856422 kilograms per acre.
Real-world example
100 kg/ha × 0.4046856422 = 40.46856422 kg/ac
100 kilograms per hectare = 40.46856422 kilograms per acre.
Conversion table
| Kilogram per Hectare (kg/ha) | Kilogram per Acre (kg/ac) |
|---|---|
| 1 kg/ha | 0.4046856422 kg/ac |
| 5 kg/ha | 2.023428211 kg/ac |
| 10 kg/ha | 4.046856422 kg/ac |
| 50 kg/ha | 20.23428211 kg/ac |
| 100 kg/ha | 40.46856422 kg/ac |
| 500 kg/ha | 202.3428211 kg/ac |
Reverse conversion: Kilogram per Acre to Kilogram per Hectare
0.4046856422 kg/ac × 2.471053815 = 0.9999999999 kg/ha
0.4046856422 kilograms per acre = 0.9999999999 kilograms per hectare.
kilograms per hectare = kilograms per acre × 2.47105381467
For a page dedicated to this direction, see Kilogram per Acre to Kilogram per Hectare.
Kilogram per Hectare vs. Kilogram per Acre
| Aspect | Kilogram per Hectare | Kilogram per Acre |
|---|---|---|
| Family | metric agricultural rate unit | mixed metric/US customary rate unit |
| Typical use | Fertilizer and pesticide application-rate labeling | Can be used to express US agricultural application or yield rates in metric mass — in practice, pounds per acre (US customary) and kilograms per hectare (international/metric) are the specific unit pairings most commonly seen on US agricultural references |
Understanding the Kilogram per Hectare
Kilogram per Hectare (kg/ha) measures agricultural application/yield rate. One kilogram of material per hectare (10,000 square meters) of land. It is classified as a metric agricultural rate unit.
Where it's used: The standard international unit for fertilizer, pesticide, and seed application rates outside the US
Uses of the Kilogram per Hectare today
- Fertilizer and pesticide application-rate labeling
- Crop yield reporting in most countries outside the US
- Agronomy research and soil-nutrient planning
Understanding the Kilogram per Acre
Kilogram per Acre (kg/ac) measures agricultural application/yield rate. A mathematically valid way to express an agricultural application or yield rate in kilograms per acre. It is classified as a mixed metric/US customary rate unit.
Uses of the Kilogram per Acre today
- Can be used to express US agricultural application or yield rates in metric mass — in practice, pounds per acre (US customary) and kilograms per hectare (international/metric) are the specific unit pairings most commonly seen on US agricultural references
Kilogram per Hectare — sources
- FAO Statistical Yearbook methodology notes — Standard unit for reporting agricultural input and yield rates internationally.
Kilogram per Acre — sources
- US agricultural extension fertilizer-rate references — US agricultural sources typically pair pounds with acres or kilograms with hectares rather than kilograms with acres directly.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per acre are in 1 kilogram per hectare?
1 kilogram per hectare equals 0.4046856422 kilograms per acre, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per hectare to kilogram per acre?
Multiply the kilogram per hectare value by 0.4046856422. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per acre back to kilogram per hectare?
Use the reverse factor: 1 kilogram per acre equals 2.471053815 kilograms per hectare. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per hectare?
Kilogram per Hectare (kg/ha) measures agricultural application/yield rate. One kilogram of material per hectare (10,000 square meters) of land. It is classified as a metric agricultural rate unit.
What is a kilogram per acre?
Kilogram per Acre (kg/ac) measures agricultural application/yield rate. A mathematically valid way to express an agricultural application or yield rate in kilograms per acre. It is classified as a mixed metric/US customary rate unit.
Is the kilogram per hectare to kilogram per acre conversion exact?
Yes. Both kilogram per hectare and kilogram per acre are defined by fixed standards rather than physical artifacts, so the factor of 0.4046856422 used above is exact to as many digits as you choose to display.
Where is the kilogram per hectare still used today?
The standard international unit for fertilizer, pesticide, and seed application rates outside the US
What's the difference between a yield rate and an application rate?
A yield rate describes how much of a crop is harvested per unit of land area (for example, tonnes per hectare). An application rate describes how much of an input like fertilizer or seed is applied per unit of land area. Both are commonly expressed using the same kind of mass-per-area units.