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Dumpster Size Calculator

Find the right dumpster size for a cleanout, remodel, or roofing job. Estimate your debris volume directly or from pile dimensions, and get a recommended container size (10–40 yd) with heavy-debris warnings and a sensible fallback size.

Updated 2026-09-14
Project

Heavy debris hits weight limits before volume limits.

Debris volume
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ft
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Imagine the debris stacked loosely in a rectangular pile.

Dumpster sizes, in real terms

A 10-yard container holds about 3–4 pickup truck loads — right for a small bathroom demo or a concrete-only job. A 20-yard, the most commonly rented size, swallows a one-car garage cleanout or a roof tear-off. 30- and 40-yard containers are for major renovations, whole-home cleanouts, and construction debris; they're tall enough that loading heavy items over the wall gets hard.

When in doubt, go one size up

The price gap between adjacent sizes is usually small — often $50–100 — while an overloaded container means overage fees or paying for a second haul. That's why this tool suggests the next size when your estimate would fill more than about 85% of the container: debris piles are always bigger than they look, and nothing packs as tightly as you imagine.

Heavy debris plays by different rules

Concrete, dirt, brick, and shingles hit road-legal weight limits long before the container looks full. Most providers restrict heavy material to 10–15 yard containers or a marked fill line, and weight allowances vary between companies and regions. If your load is heavy, call the provider and describe the material before booking — it changes both the container and the price.

Recommended dumpster
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Standard roll-off sizes: 10–40 yd
Estimated debris
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Approximate fill level
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Consider instead
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Typical for this project
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Sizes, availability, and weight allowances vary by provider.

Common questions

What size dumpster do I need?

Match the container to your debris volume: 10 yd for a small bathroom or a single-room cleanout, 20 yd for a typical garage or kitchen remodel, 30–40 yd for whole-house renovations and construction. Estimate your pile as length × width × height in feet, divided by 27.

What size dumpster do I need for a roof?

Roughly 1 cubic yard per roofing square (100 sq ft) of single-layer asphalt shingles, doubled for a tear-off of two layers. A 20-square roof usually fits a 20 yd container — but shingles are heavy debris, so confirm the weight allowance before you book.

How many pickup truck loads fit in a dumpster?

About 3–4 loads in a 10 yd container, 6–8 in a 20 yd, and 9–12 in a 30 yd, assuming a standard full-size bed holding roughly 2.5 cubic yards loose.

Why are concrete, dirt, and shingles limited to small containers?

They hit the weight limit long before the container looks full. A single cubic yard of concrete weighs over 2 tons, so a 10 yd box of it exceeds what most trucks can legally haul. Providers usually require a dedicated heavy-debris container with a fill line.

What happens if I overfill the dumpster?

Loads above the fill line cannot be legally hauled, so the driver either refuses the pickup or charges you to offload. When your estimate fills 85% or more of a size, take the next one up — the price difference is almost always less than a second haul.

How this is calculated

Method
Debris volume comes either from your direct estimate in cubic yards or from a loose pile: length × width × height in feet, ÷ 27.
The recommendation is the smallest standard container (10, 15, 20, 30, 40 yd) that holds the volume.
When the load would fill 85% or more of the container, the next size up is suggested — a slightly larger container is much cheaper than a second haul.
Heavy debris (concrete, dirt, brick, shingles) is capped at small containers, because weight limits are reached long before the container looks full.
Assumptions
  • This is a sizing estimate, not a quote. Container availability, dimensions, and pricing vary by provider and region.
  • Weight allowances are set by each provider and are not modeled here — heavy materials often have special rules (dedicated containers, fill-line limits).
  • Debris volume estimates are inherently rough; loose piles compact when loaded and bulky items trap air.
  • For reference: 10 yd ≈ 3–4 pickup loads, 20 yd ≈ a one-car-garage cleanout, 30–40 yd suit major renovations.
Sources
  • Standard US roll-off container sizes (10/15/20/30/40 yd) — Industry-standard nominal volumes; actual container dimensions vary by manufacturer.
Methodology reviewed 2026-09-14 · See our methodology for how we build and test calculators.
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