Working Width and Speed: Separate Theoretical and Effective Field Capacity; illustrative quantitative diagram
Define the quantity before calculating
The working width is the area actually covered on each pass, not necessarily the machine’s external width. Speed also needs a defensible operating basis. A theoretical capacity ignores overlap and time losses, so it should not be presented as the number of acres guaranteed in a working hour.
Use Acres Per Hour Calculator with the units and the basis stated on its form. Check what each input represents before carrying the output into another record.
Read the model explicitly
Effective ha/h = width (m) × speed (km/h) / 10 × efficiency fraction. Acres/h = ha/h × 2.4710538147.
The Gardening and crops calculators group sits within Biology calculators. Keep a measured observation distinguishable from a hypothetical input when moving between its tools.
A worked unit check
| Input as labeled on the tool | Illustrative value |
|---|---|
| Effective working width (m) | 3 |
| Assumed operating speed (km/h) | 6 |
| Field efficiency (%) | 75 |
| Output from the illustrative inputs | Value | Unit |
|---|---|---|
| Effective field capacity | 1.35 | ha/h |
| Effective acreage capacity | 3.33592 | acres/h |
Record the original input and its unit with this result. Recalculate when the measurement basis changes; changing a unit label after calculation does not convert the quantity. More decimal places do not remove sampling or measurement uncertainty.
A related quantity
Lawn Mowing Cost Calculator addresses a related part of the task. Check its own input definition before carrying a number across.
Continue with Field-Capacity Estimates: Carry Turning and Stoppage Assumptions into the Schedule for the other part of this measurement question.
Return to GreenCalc for other subjects. Keep raw observations, chosen assumptions and calculated quantities identifiable so a later revision does not overwrite the basis of the original record.
By GreenCalc · Updated 2026-11-06