Acres Per Hour Calculator
Use our acres per hour calculator to estimate how many acres you can cover per hour from tool width and speed. Enter tool width (ft + in) and speed (mph) to get area per hour (ac/hr).
What Is Acres Per Hour?
Acres per hour (ac/hr) is a coverage rate: how much area a tool (mower, tiller, sprayer boom, etc.) can cover in one hour at a given width and speed.
This calculation assumes continuous straight-line coverage with no overlap, turns, slowdowns, or downtime. Real-world productivity is usually lower due to turning, overlap, and terrain.
Acres Per Hour Formula
Convert tool width to feet, convert speed to feet per hour, then divide by 43,560 to convert square feet to acres.
Combine feet and inches into a single width in feet.
1 mile = 5,280 feet.
1 acre = 43,560 ft².
5,280 ÷ 43,560 = 0.121212... so AcresPerHour ≈ Speed × Width × 0.121212.
This is theoretical coverage and does not include overlap or turning.
How to Calculate Acres Per Hour
- 1
Enter the tool’s width in feet and inches.
- 2
Enter speed in miles per hour (mph).
- 3
The calculator converts width to feet and speed to feet per hour.
- 4
It returns area per hour in acres per hour (ac/hr).
Frequently Asked Questions
Use AcresPerHour = (width(ft) × speed(mph) × 5,280) ÷ 43,560. Convert inches to feet by dividing by 12.
AcresPerHour = (Width(ft) × Speed(ft/hr)) ÷ 43,560, where Speed(ft/hr) = Speed(mph) × 5,280.
Width × distance traveled gives area. In one hour, distance traveled is speed(mph) × 1 hour. Convert the resulting square feet to acres by dividing by 43,560.
Real work includes overlap, turning at row ends, slowing down, obstacles, and downtime. The calculator is a best-case theoretical coverage rate.
It depends mainly on tool width and speed. Wider tools and higher speeds increase coverage, but practical limits (terrain, overlap, safety) usually reduce real output.