How Long to Bush Hog 10 Acres

How long to bush hog 10 acres? A 6 foot cutter takes 4.58 hours at 4 miles per hour and 75 percent efficiency, or about 4 hours and 35 minutes. A 10 foot cutter takes 2.75 hours at the same speed and efficiency, and a 4 foot cutter takes 6.88 hours. Cutter width, speed, and efficiency set the time.

The Method: Rate First, Then Time

Acres per hour equals width in feet times speed in miles per hour times efficiency, divided by 8.25. Efficiency is written as a decimal in the formula, so 75 percent is 0.75 and 65 percent is 0.65. The constant 8.25 comes from 43560 divided by 5280. That is the number of square feet in an acre divided by the number of feet in a mile.

To get time for 10 acres, divide 10 by acres per hour. That gives hours. Multiply the part after the decimal point by 60 to turn it into minutes. For example, 4.58 hours is 4 hours plus 0.58 times 60 minutes, which is about 4 hours and 35 minutes. Times in this guide use the unrounded rate, and only the final value is rounded.

The guide on how to calculate acres per hour gives the same formula in full, and the Acres Per Hour Calculator on the homepage uses the same formula. The Bush Hog Acres Per Hour Calculator uses the same formula with cutter width as the width input. Run the same inputs through the calculator and compare the result with the tables below. They should agree, because the formula is the same.

Cutting time is not the whole day. Travel to the field, fuel stops, breaks, and time spent walking the field sit outside the calculator result. Add them to the plan after you have worked out the cutting time. A job that needs 4.58 hours of cutting will not fit in a 4 hour morning once travel and stops are added, so plan the day from the full time, not from the cutting time alone.

How Long to Bush Hog 10 Acres at 4 Miles Per Hour and 75 Percent Efficiency

This is the main table in this guide. It uses the page table rates at 4 miles per hour and 75 percent efficiency, and it turns each rate into time for 10 acres. Every rate and every time was recalculated from the formula in this task.

Check one row by hand. For a 6 foot cutter, 6 times 4 equals 24, 24 times 0.75 equals 18, and 18 divided by 8.25 equals 2.18 acres per hour after rounding. Then 10 divided by 2.18 equals 4.58 hours, or about 4 hours and 35 minutes. For a 15 foot cutter, 15 times 4 equals 60, 60 times 0.75 equals 45, and 45 divided by 8.25 equals 5.45 acres per hour after rounding. Then 10 divided by 5.45 equals 1.83 hours, or about 1 hour and 50 minutes.

Time for 10 Acres at 4 Miles Per Hour and 65 Percent Efficiency

Use 65 percent efficiency when the field is small or irregular, when the growth is thick, or when the field has many obstacles. The rate falls, so the time rises. The table below uses the same speed, 4 miles per hour, and the lower efficiency, 65 percent. Every rate and every time was recalculated from the formula in this task.

Check one row by hand. For a 10 foot cutter, 10 times 4 equals 40, 40 times 0.65 equals 26, and 26 divided by 8.25 equals 3.15 acres per hour after rounding. Then 10 divided by 3.15 equals 3.17 hours, or about 3 hours and 10 minutes. For a 4 foot cutter, 4 times 4 times 0.65 equals 10.4, and 10.4 divided by 8.25 equals 1.26 acres per hour after rounding. Then 10 divided by 1.26 equals 7.93 hours, or about 7 hours and 56 minutes.

Time for 10 Acres at 4.5 Miles Per Hour and 75 Percent Efficiency

Use this table when you can hold 4.5 miles per hour while cutting cleanly. That speed is the homepage example speed, and it gives a shorter time than 4 miles per hour at the same efficiency. Every rate and every time was recalculated from the formula in this task.

Check one row by hand. For a 6 foot cutter, 6 times 4.5 equals 27, 27 times 0.75 equals 20.25, and 20.25 divided by 8.25 equals 2.45 acres per hour after rounding. Then 10 divided by 2.45 equals 4.07 hours, or about 4 hours and 4 minutes. For a 15 foot cutter, 15 times 4.5 equals 67.5, 67.5 times 0.75 equals 50.625, and 50.625 divided by 8.25 equals 6.14 acres per hour after rounding. Then 10 divided by 6.14 equals 1.63 hours, or about 1 hour and 38 minutes.

Time for 10 Acres at 3 Miles Per Hour

Use this table for thick growth or rough ground, where a slower speed is needed. Thick tall woody growth needs slower speeds, so 3 miles per hour is a useful planning speed for thick brush. The table gives both 75 percent efficiency and 65 percent efficiency, so you can see the effect of efficiency at a slow speed. Every rate and every time was recalculated from the formula in this task.

Check one row by hand. For a 6 foot cutter at 3 miles per hour and 75 percent efficiency, 6 times 3 equals 18, 18 times 0.75 equals 13.5, and 13.5 divided by 8.25 equals 1.64 acres per hour after rounding. Then 10 divided by 1.64 equals 6.11 hours, or about 6 hours and 7 minutes. For the same cutter at 65 percent efficiency, 6 times 3 times 0.65 equals 11.7, and 11.7 divided by 8.25 equals 1.42 acres per hour after rounding. Then 10 divided by 1.42 equals 7.05 hours, or about 7 hours and 3 minutes.

What Changes the Time on a Real 10 Acre Field

Working width changes the time first. The tables in this guide use the full cutter width, but the real working width is smaller once overlap is taken out. If you overlap by about half a foot on each pass, a 6 foot cutter has a working width of about 5.5 foot, and the rate at 4 miles per hour and 75 percent efficiency falls to 2.00 acres per hour, because 5.5 times 4 times 0.75 divided by 8.25 equals 2.00. Then 10 acres takes 10 divided by 2.00, which equals 5.00 hours, not 4.58 hours. Measure the fresh cut strip in the field and use that measurement in the calculator. Read the guide on understanding field efficiency for how turning and overlap lower efficiency.

Ground and growth change the time too. Thick tall woody growth needs slower speeds, rocks, stumps, and ditches force detours and lower efficiency, and slopes call for slower safer passes. Walk the field first, mark stumps, rocks, holes, and wire hidden in tall grass, and check that the cutter can pass through gates and turn inside the field. If the field is steep, wet, or full of hidden hazards, use the slow table and the lower efficiency, and split the field across two days if you need to.

Common Mistakes When Planning 10 Acres

First, planning from width and speed alone, with efficiency left at 100 percent. That gives the highest possible rate, not the rate you will achieve. At 4 miles per hour, a 6 foot cutter gives 2.91 acres per hour at 100 percent efficiency, because 6 times 4 divided by 8.25 equals 2.91, so 10 acres would take 3.44 hours on paper, while the field rate at 75 percent efficiency gives 4.58 hours. Always apply an efficiency below 100 percent.

Second, using machine width instead of working width. Measure the actual cut swath minus overlap and use that figure in the formula. Third, using top speed instead of average cutting speed. Average cutting speed is the speed you can hold while the deck is cutting cleanly, including slower ground, turns, and obstacles. Use the average.

Fourth, copying a time from another site without checking its width, speed, and efficiency. One competitor gives bush hog rates of 2 to 3.5 acres per hour only, and another gives one row at 2.2 acres per hour. Those figures may be correct for their own cutter and speed, but they do not describe your cutter unless the inputs match. Always read the inputs beside a rate, and rerun the formula with your own inputs before you plan from it.

Frequently Asked Questions

Q: How long to bush hog 10 acres?
A: A 6 foot cutter takes 4.58 hours at 4 miles per hour and 75 percent efficiency, or about 4 hours and 35 minutes. A 10 foot cutter takes 2.75 hours, and a 4 foot cutter takes 6.88 hours at the same speed and efficiency.

Q: How long does it take to bush hog 10 acres with a 10 foot cutter?
A: At 4 miles per hour and 75 percent efficiency, a 10 foot cutter takes 2.75 hours, or 2 hours and 45 minutes. At 4.5 miles per hour it takes 2.44 hours.

Q: How long does it take to bush hog 10 acres with a 15 foot cutter?
A: At 4 miles per hour and 75 percent efficiency, a 15 foot cutter takes 1.83 hours, or about 1 hour and 50 minutes. At 4.5 miles per hour it takes 1.63 hours.

Q: How long does it take to bush hog 10 acres in thick brush?
A: At 3 miles per hour and 65 percent efficiency, a 6 foot cutter takes 7.05 hours, a 10 foot cutter takes 4.23 hours, and a 4 foot cutter takes 10.58 hours.

Q: What efficiency should I use for 10 acres?
A: Use 75 percent as a planning start for average pasture. Use 65 percent for a small or irregular field, thick growth, or a field with many obstacles, and use 85 percent only for a large rectangular field.

Q: Does the time include travel and fuel stops?
A: No. The times in this guide are cutting time only. Add travel, fuel stops, breaks, and time spent walking the field on top of the cutting time to get the full day.

Plan the Day From the Cutting Time

How long to bush hog 10 acres is not one time. It is 6.88 hours with a 4 foot cutter, 4.58 hours with a 6 foot cutter, 2.75 hours with a 10 foot cutter, and 1.83 hours with a 15 foot cutter, all at 4 miles per hour and 75 percent efficiency. Pick your cutter width, pick a speed you can hold, pick an efficiency that matches the field, and work out the time before you start. Run your own numbers through the Bush Hog Acres Per Hour Calculator before the next job, and add travel and stops on top of the cutting time. The bush hog rotary cutter productivity guide gives the general productivity view. For cost planning, use the live bush hogging cost calculator.