Excavator Dimensions in Meters: A Class-by-Class Reference Table
Specification sheets list excavator dimensions in meters in some markets and in feet and inches in others, and the two are frequently mixed within the same document. That mix is a genuine source of costly mistakes: a machine quoted at "10 feet wide" and a machine quoted at "3 metres wide" are not the same machine, and the difference matters when you are organising transport or checking a gate width.
This reference explains what each dimension means, gives typical metric values by machine class, and shows how to convert between the two systems without introducing rounding errors that lose you centimetres you did not have.
The Core Dimensions and What They Describe
Manufacturers measure a consistent set of dimensions, though the labels vary. Understanding each one prevents the most common error, which is comparing a transport figure against a working figure.
- Overall length — the machine measured along its longest axis, usually with the boom and arm extended flat on the ground.
- Overall width — measured across the tracks or across the widest point of the house, whichever is greater. This is the figure that determines whether you pass through a gate.
- Overall height — to the top of the cab or canopy. Boom height when raised is usually quoted separately and is much greater.
- Transport length — the machine with the front linkage folded, ready for trailering. Always shorter than working length.
- Track gauge and shoe width — the distance between track centres and the width of each track, which together set the overall width and the ground contact area.
- Maximum digging depth — the deepest point the bucket tip can reach below the machine's ground line.
- Maximum reach at ground level — the horizontal distance from the machine's swing centre to the bucket tip at ground level.
- Maximum dumping height — the highest point the bucket can reach while tipping material out.
- Tail swing radius — the distance from the swing centre to the furthest rear point of the house.
Typical Metric Dimensions by Class
The table below gives broad industry ranges. Values vary by manufacturer, boom configuration and undercarriage specification, so treat these as orientation figures for planning rather than as a specification for any particular model.
| Dimension | Micro (0.8–1 t) | 1–2 t | 2–3.5 t | 3.5–6 t | 7–12 t |
|---|---|---|---|---|---|
| Overall width (m) | 0.70–1.00 | 0.90–1.30 | 1.30–1.70 | 1.60–2.00 | 2.20–2.60 |
| Overall height, cab (m) | 1.80–2.20 | 2.10–2.40 | 2.30–2.60 | 2.40–2.80 | 2.70–3.10 |
| Transport length (m) | 2.20–2.80 | 3.00–3.80 | 4.00–4.80 | 4.80–5.60 | 6.00–7.50 |
| Max dig depth (m) | 1.50–1.90 | 1.90–2.40 | 2.40–3.10 | 3.00–3.90 | 4.00–5.50 |
| Max reach, ground (m) | 2.60–3.10 | 3.20–4.00 | 4.20–5.20 | 5.20–6.20 | 6.50–8.50 |
| Max dump height (m) | 1.80–2.30 | 2.30–2.90 | 3.00–3.70 | 3.60–4.40 | 4.80–6.20 |
| Tail swing radius (m) | 0.60–0.90 | 0.80–1.10 | 1.00–1.40 | 1.30–1.70 | 1.80–2.30 |
Reading Width Correctly: Expandable Undercarriages
Width is the dimension most often misread, because many compact machines have an undercarriage that retracts. A machine may measure well under a metre when retracted for transport and noticeably more once extended for work. Some machines also run different track shoe widths, changing overall width by a few centimetres.
When a specification sheet gives a single width figure, check whether it refers to the retracted or extended state. If only one figure is given, assume it is the working width, and confirm the narrow figure separately if access is critical.
Converting Meters and Imperial Figures
The conversion factor is exact: one inch is 25.4 millimetres, so one foot is 0.3048 metres. Multiply feet by 0.3048 to get metres; divide metres by 0.3048 to get feet.
Two practical cautions. First, do not round intermediate values — a dimension rounded twice can accumulate an error of a centimetre or more, which is enough to matter at a gate. Second, remember that imperial listings often use feet and inches rather than decimal feet. A figure of 8'6" is 8.5 feet, which is 2.591 metres, not 2.44 metres.
As a rough mental check, one metre is a little over three feet three inches. A machine described as roughly ten feet wide is around three metres; a machine described as six feet wide is under two metres.
Planning Checklist Using Metric Dimensions
- Measure the narrowest access point in metres, and subtract at least 100 mm of clearance on each side.
- Compare against the retracted width, not the working width, and confirm the retracted figure in writing.
- Check overhead clearance against the cab height, then against the raised boom height if you will work under a structure.
- Check trailer deck length against transport length, remembering that the bucket often has to hang over the front.
- Verify dig depth with margin. If the trench is 2.4 metres deep, a machine rated at exactly 2.4 metres will not finish the job cleanly.
- Confirm tail swing radius against the space behind the machine, especially for work against walls or fences.
- Record ground bearing pressure if you are working on slabs, suspended floors or soft ground.
Dimensions That Are Commonly Omitted
Specification sheets rarely list a few figures that matter in practice. These are worth asking a dealer to confirm directly.
- Height with the boom raised — often a metre or more above cab height, and critical for indoor work.
- Minimum swing radius at full boom articulation — the tightest circle the machine can work in.
- Blade width and lift height — relevant if you intend to grade or backfill.
- Shipping weight versus operating weight — the transport paperwork needs the shipping figure.
- Ground clearance — the distance from the ground to the lowest point of the undercarriage, which determines whether the machine will ground out on a ramp.
Avoiding the Two Expensive Mistakes
The first expensive mistake is buying a machine that does not fit the access. This is entirely preventable by measuring in metres, writing the figures down, and comparing them against the specification sheet before ordering. The second is buying a machine that cannot reach the required depth or height. Both mistakes come from comparing the wrong figure against the wrong requirement, and both disappear once you know which dimension answers which question.
Keep a single sheet listing your access width, required dig depth and required dump height in metres. Every machine you evaluate can then be checked against those three numbers in under a minute.
To compare machines against your own figures, view the mini excavator collection, including the compact SDLE08 mini excavator and the larger SDLE30 mini excavator.
