Excavator Size Guide: Which Size Do You Actually Need?

Choosing the wrong size excavator costs you money — either through renting a machine that's too large or struggling with one that's too small. Here's a breakdown of the five standard size classes.

Excavator Size Classes at a Glance

Class	Operating Weight	Dig Depth	Used Price Range	Best For
Mini	Under 6 tons	7–12 ft	$15,000–$60,000	Residential, utilities, landscaping
Small	6–13 tons	12–18 ft	$40,000–$120,000	Light commercial, road work
Medium	13–25 tons	18–24 ft	$80,000–$200,000	General construction, demo
Large	25–45 tons	22–32 ft	$120,000–$350,000	Heavy earthmoving, deep utilities
Mining	45+ tons	30+ ft	$250,000–$1.5M+	Mining, quarry, infrastructure

Mini Excavators (Under 6 Tons)

Mini excavators dominate residential and light utility work. Their compact footprint lets them work in backyards, between buildings, and inside structures.

Popular Models

• Caterpillar 303.5 CR — Industry standard, excellent resale
• Kubota KX040-4 — Reliable, strong dealer network
• Bobcat E35 — Zero tail swing, tight residential lots
• John Deere 35G — Good power-to-weight ratio

Small Excavators (6–13 Tons)

These bridge the gap between minis and full-size machines. Transportable on a standard trailer without oversize permits.

Popular Models

• Caterpillar 308 CR — The benchmark in this class
• Komatsu PC78US — Tight tail swing, fuel efficient
• Volvo ECR88D — Strong in confined spaces
• Kobelco SK75SR — Smooth hydraulics

Medium Excavators (13–25 Tons)

The workhorse class for general construction. If you own one excavator and do a mix of work, a 20-ton class machine is the most versatile investment.

Popular Models

• Caterpillar 320 — The most widely used excavator in North America
• Komatsu PC200 — Strong fuel economy
• John Deere 210G — Excellent dealer support
• Hitachi ZX210 — Fast cycle times

Use EquipBook's comparison tool to stack models side by side and find the best value.

Large Excavators (25–45 Tons)

Purpose-built for heavy earthmoving. Requires lowboy trailers and oversize permits for transport.

Popular Models

• Caterpillar 336 — Industry standard for production digging
• Komatsu PC360 — Excellent fuel efficiency
• Volvo EC350E — Operator comfort, low noise
• Liebherr R 930 — Strong in demolition

Mining Excavators (45+ Tons)

Specialized machines for continuous high-production digging in mining and major infrastructure.

Popular Models

• Caterpillar 390F — 90-ton class, construction/mining crossover
• Komatsu PC490 — Strong in quarry applications
• Hitachi EX1200 — True mining class, 120 tons
• Liebherr R 9100 — Purpose-built for mining

How to Choose the Right Size

1. Dig depth and reach — Measure what your typical projects demand and pick a class that handles it comfortably.
2. Transport logistics — Under 13 tons travels on standard trailers. Above that requires lowboys and oversize permits.
3. Utilization rate — A larger machine sitting idle 40% of the time costs more than a slightly smaller one that works every day.

Run a valuation on EquipBook for the specific makes and models in your target class.