Field & Equipment Calculators
Estimate acres (or hectares) per hour and time to finish for mowing, bush hogging, tilling, spraying and harvesting, the same proven formula, tuned with typical values for each job.
Acres Per Hour Calculator
Acres (or hectares) per hour and time to finish from width, speed and efficiency.
Open calculatorMowing Acres Per Hour Calculator
Mowing rate for push, riding and zero-turn mowers from deck width and speed.
Open calculatorBush Hog Acres Per Hour Calculator
Rotary cutter coverage for pasture, brush and rough terrain.
Open calculatorTilling Acres Per Hour Calculator
Coverage for tillers, discs, cultivators and plows, from garden to field scale.
Open calculatorSpraying Acres Per Hour Calculator
Sprayer coverage plus acres per tank, tank loads and total mix volume.
Open calculatorHarvesting Acres Per Hour Calculator
Combine coverage from header width and crop conditions, plus bushels per hour.
Open calculatorTime to Mow Calculator
How long it takes to mow your lawn, per mow and across the whole season.
Open calculatorLawn Mowing Cost Calculator
Price a mowing job from lawn size, mower and your hourly rate: cost per mow, per acre and per month.
Open calculatorBush Hogging Cost Calculator
Bush hogging cost per acre and total job price from cutter width, terrain and hourly rate.
Open calculatorCost Per Acre Calculator
Turn any machine's hourly cost into cost per acre and total job cost for field work.
Open calculatorAcres to Hectares Converter
Convert acres, hectares, square feet, square metres and more, instantly and both ways.
Open calculatorOne formula, every implement
The constant 8.25 comes from 43,560 sq ft per acre ÷ 5,280 ft per mile. Field efficiency, usually 70 to 85%, accounts for turns, overlap, refills and obstacles, and is the biggest difference between theory and a real day in the field.
Which calculator?
- Acres Per Hour: any implement, with presets from push mowers to combines.
- Mowing and Time to Mow: lawns and properties, including season totals.
- Bush Hog: pasture and brush with terrain-based efficiency.
- Tilling: tillers, discs, chisels and cultivators.
- Spraying: adds acres per tank, tank loads and total mix.
- Harvesting: adds bushels or tonnes per hour.
FAQ
Common questions
Why does the formula divide by 8.25?
It converts feet × miles per hour into acres per hour: 43,560 ÷ 5,280 = 8.25.
What field efficiency should I use?
Start with 75% for typical conditions. Use 80 to 85% for large, regular fields and 55 to 65% for small or obstacle-filled areas.
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