The John Deere 840 is 267.7 in long and 120 in tall, with a 116.1 in wheelbase.
Length267.7 in (22 ft 3.7 in) / 6,799.6 mm
Height120 in (10 ft 0 in) / 3,048 mm
Wheelbase116.1 in (9 ft 8.1 in) / 2,948.9 mm
John Deere 840 Dimensions
Overall length
267.7 in (22 ft 3.7 in) / 6,799.6 mm
Overall height
120 in (10 ft 0 in) / 3,048 mm
Wheelbase
116.1 in (9 ft 8.1 in) / 2,948.9 mm
Tractor Size Comparison Chart
Overall length comparison
This model
267.7 in
Average
138.9 in
Low
63 in
High
346.3 in
Overall height comparison
This model
120 in
Average
86.2 in
Low
39.8 in
High
152 in
Wheelbase comparison
This model
116.1 in
Average
79.2 in
Low
34.8 in
High
190.5 in
John Deere 840 Extra Dimension Notes
Size class note
The John Deere 840 comes across as a large farm tractor in real-world fitment. It is a large farm tractor, so shed height, gate width, trailer space and implement room matter more than they would on a compact machine.
Storage fit note
The John Deere 840 is a shed-bay tractor rather than a garage tractor. With length 267.7 in (22 ft 3.7 in) / 6,799.6 mm and height 120 in (10 ft 0 in) / 3,048 mm, leave margin for height and width.
Wheelbase note
The John Deere 840’s 116.1 in (9 ft 8.1 in) / 2,948.9 mm wheelbase gives useful context to the overall length. It shows how much of the tractor is actual chassis span.
Storage Tips
Leave room around the John Deere 840 for mirrors, steps, tires, cab/ROPS and attachments.
Measure the lowest overhead point, not the tallest part of the shed roof.
Use the 116.1 in wheelbase as a clue for how much approach room is needed near the shed entrance.
Overhead clearance should be measured at the lowest part of the doorway, not the tallest part of the shed.
Storage FAQ
Will it fit in a garage?
This tractor’s 267.7 in length and 120 in height make ordinary garage storage doubtful unless the opening is oversized. Use 12 ft high, 30 ft deep as the practical benchmark.
What size door should I check?
The tractor is 120 in tall, width not captured wide and 267.7 in long. Check a clear opening around 12 ft high, the tractor width plus side clearance wide and 30 ft deep so you are not parking with inches to spare.
Do attachments change the storage size?
Yes. A tight bay should be planned around the attached setup. For this large farm tractor, allow about 6 ft to 12 ft extra depth if gear stays on.
How much maneuvering room should I allow?
If the door is close to the the tractor width plus side clearance target, approach angle matters more. The John Deere 840’s width not captured width and 116.1 in wheelbase need a clean line into the bay.
Official information note
Mistakes do happen. Tractor dimensions can change by year, tire setup, cab/ROPS setup, attachments and market. Please check the operator manual, build sheet and official deere.com website for official information.
