Biology
Find how many acres a tractor implement covers per hour from width, speed and field efficiency.
Your inputs
Change any value — everything updates instantly.
Working width of the planter, sprayer or mower.
Average field speed.
Time actually working; 65–90% is typical.
Try an example
Acres covered per hour
14.55 ac/h
This means you can expect to cover about 14.5 acres every hour.
What you are seeing
The green strip grows as the machine works.
Orange is the 20% of time lost to turns, overlap and refilling.
Net result: 14.55 acres per hour.
Theoretical capacity
18.18 ac/h
If you never stopped or turned.
Acres in 8 hours
116.4 ac
A full working day.
Hours per 100 acres
6.9 h
Time to finish 100 acres.
Efficiency used
80 %
Share of time spent working.
Result explanation: Field work rate
14.55 ac/h (5.89 ha/h).
Real-life comparison: Perfect conditions would give 18.18 ac/h.
Low, normal or high? A normal efficiency for most field work.
Acres per hour against speed
How to read this chart: Faster driving covers more ground in a straight line. The red dot is your speed.
Multiplies width by speed to find ground covered, then allows for lost time.
14.55 acres each hour.
Wider implements and fewer turns raise output.
Speed beyond the recommended range can hurt work quality.
The constant 8.25 turns feet × miles per hour into acres per hour.
acres/h = width (ft) × speed (mph) × efficiency ÷ 8.25
Symbols
Why this formula works
1 mile of travel × 1 ft width = 5,280 ft², and an acre is 43,560 ft².
Unit check
ft × mile/h × 5,280 ÷ 43,560 = ac/h ✓
Worked example
Common mistakes
You cover about 14.55 acres per hour.
The share of time actually working, after turns, overlaps and refills.
Planters and sprayers often run 50–75%; tillage and mowing 70–90%.
It is 43,560 ÷ 5,280, converting feet × miles into acres.
Multiply acres by 0.4047.
Reviewed 2026-09-25 · Next review 2027-09-25
Important limitation. Planning estimate; real rates depend on field shape and conditions.
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