Dumpster Size Calculator
Turn a pile of debris, a few pickup loads or a room full of junk into cubic yards, and see which roll-off size fits with room to spare.
Dumpster size calculator
Measure your debris any way you like. We show how full each size would be.
How full each size would be
Every standard size, side by side
How to measure debris you haven’t piled up yet
- Count truck loads. If you’ve ever hauled stuff in a full-size pickup, estimate how many loads the job would take. Each load is about 3.3 cubic yards.
- Use the room method for cleanouts. Imagine everything in the room spread evenly across the floor and guess how deep it would be. A 12 × 12 ft room with junk 2 ft deep is about 10.7 cubic yards.
- Remember that demolition fluffs up. Torn-out drywall, cabinets and framing take far more space as broken debris than they did on the wall, so measure the pile, not the room.
- Check weight too. A size that fits by volume can still be over its weight allowance with heavy material. Run your load through the weight calculator.
How we calculate
Every number in the calculator comes from these steps and the data below. The page runs the same numbers you see here.
- Pile: length × width × height in feet ÷ 27 = cubic yards.
- Pickup loads: loads × 3.33 cubic yards.
- Room cleanout: room length × width × average depth of junk in feet ÷ 27.
- Each size’s fill % = your volume ÷ its capacity. The recommended size is the smallest one at or below 85% full.
Sizes used
| Size | Length × height | Pickup loads | Included weight (range found) | Typical price range |
|---|---|---|---|---|
| 10 yd | 12–14 × 3.5 ft | 3 | 1–3 tons | $250–$586 |
| 15 yd | 16 × 4.5 ft | — | 2–3 tons | $306–$609 |
| 20 yd | 22 × 4–4.5 ft | 6 | 1.5–4 tons | $275–$679 |
| 30 yd | 22 × 6 ft | 9 | 2.15–5 tons | $300–$809 |
| 40 yd | 22 × 8 ft | 12 | 2.75–6 tons | $350–$906 |
Assumptions and limits
- The 3.33 cubic-yard pickup load comes from HomeGuide’s equivalents (10 yd ≈ 3 loads … 40 yd ≈ 12 loads). Trucks with short or long beds hold less or more.
- The 85% fill target is our own planning margin, so bulky items and uneven loading still fit below the rim.
- Container dimensions vary between companies; the lengths and heights shown are ranges from the sources below.
Sources
We opened and checked every source below in October 2026.
- HomeGuide — Dumpster rental prices (Apr 5, 2023)
- Custom Truck One Source — Roll-off dumpsters: which size is right for you?
- Dumpsters.com — Dumpster rental prices (updated October 2026)
- Fixr — Dumpster rental cost (updated Jan 31, 2025)
Last reviewed: October 2026 · Full methodology
Dumpster size FAQ
How do I calculate what size dumpster I need?
Measure your debris in feet, multiply length × width × height and divide by 27 to get cubic yards. Then choose a size you’ll fill to roughly 85%, leaving room for bulky items.
How many cubic yards is a pickup truck load?
About 3.3 cubic yards for a full-size pickup, based on HomeGuide’s figure of about 3 loads in a 10-yard dumpster.
What size dumpster do I need for a house cleanout?
A one- or two-room cleanout often fits a 10 or 15-yard. A whole house usually needs a 20 or 30-yard. Use the room method above for a better estimate.
Can I fill a dumpster above the top?
No. Haulers generally won’t take loads piled above the rim because debris can fall off in transit. That is why we size for about 85% full.
Is a bigger dumpster always better?
Not always. A larger container costs more, takes more space and may have a weight allowance that heavy debris would exceed long before it’s full.