Rental truck sizes: 10, 15, 20, or 26 foot?
Rental truck sizes are named by cargo box length, and the marketing labels ("fits 3 bedrooms!") are written for a tidy household on a good day. Your household, with the garage, the patio furniture, and the books, is not the brochure household. Here are the four standard sizes with honest numbers, then the two rules that matter more than the chart: volume estimates you can do yourself, and the one-trip rule for one-way moves.
The four sizes
| Size | Cargo volume | Honest fit | Notes |
|---|---|---|---|
| 10 ft | ~400 cu ft | Studio to small 1-bedroom | Low deck, usually no ramp. Drives like a van. |
| 15 ft | ~760 cu ft | 1–2 bedroom apartment | Ramp and over-cab storage on most fleets. |
| 20 ft | ~1,000 cu ft | 2–3 bedroom home | The most-rented size, and the most commonly underestimated. |
| 26 ft | ~1,680 cu ft | 3–5 bedroom home | Largest rental without a commercial license. Ramp, tall box. |
Volumes are nominal and vary a little by fleet and model year. The pattern across brands is consistent: each step up adds roughly 250–650 cu ft, and the jump from 20 to 26 ft is the biggest of all.
Estimate your volume, not your bedrooms
Bedrooms are a bad unit. A furnished room of ordinary density runs about 150–200 cu ft of packed truck space. Walk your home and count rooms at that rate: a 3-bedroom house with a living room, dining room, kitchen, and a modest garage load is 8 spaces, or roughly 1,200–1,600 cu ft. That arithmetic says the 20 ft truck (about 1,000 cu ft) is too small and the 26 ft is right, which matches experienced movers' instincts and contradicts the counter chart. Two things pull the other way: dense, tight loading (our supplies checklist is really about this) can reclaim 15–20% of volume, and a serious declutter before the move can remove a room's worth entirely. If your count lands within 10% of a truck's volume, treat that truck as too small.
The one-trip rule
Local moves forgive optimism: a second trip costs an afternoon. One-way moves do not. If everything does not fit, the overflow problem has no cheap answer: ship it, trailer it, or leave it. So for one-way rentals, when your estimate falls between two sizes, take the larger one. The price difference is usually $50–$150 on the rental, against hundreds or thousands for the overflow plan. For local moves within a few miles, the smaller truck and a possible second trip is a fair gamble, especially if it keeps you in a truck you are comfortable driving.
When weight binds before volume
Household goods are usually light for their size, so volume runs out first. Dense households flip that: book collections, tool chests, gym plates, safes, and shop equipment can reach a truck's payload limit with the box visibly half full. Payloads vary widely by size and fleet (small trucks can be rated under 3,000 lbs; big ones several times that), and the rating is printed on a placard in the cargo box or door frame. Check it before loading day if your home is heavy, and load dense items low, forward, and spread across the floor rather than stacked in one corner.
Ramps, decks, and over-cab space
- 10 ft trucks sit low and typically load from a rear door at knee height, no ramp. Fine for two people and modest furniture; miserable for a piano.
- 15 ft and up generally include a loading ramp. Confirm at reservation; ramp width and weight rating (often around 1,000 lbs) matter for appliances and safes.
- Over-cab storage (the "Mom's Attic" on one major fleet) adds a shelf over the cab for fragile and light items. It is real volume, but it is not on the floor plan, so do not count it for furniture.
- Liftgates replace ramps on some commercial-fleet rentals. Wonderful for heavy single items, slower for everything else.
Driving and logistics reality
- Fuel: expect roughly 8–12 mpg loaded, with the 26 ft at the thirsty end. Budget it with the calculator rather than discovering it at the pump.
- Length: a 26 ft truck towing your car on a dolly is a 45 ft or longer combination. Plan fuel stops and hotel parking like a trucker, because for this trip you are one. Backing up a tow dolly is effectively not possible; choose pull-through spots.
- License: none of these sizes requires a commercial driver's license in the US, since all sit under 26,000 lbs gross weight. Confidence is the real requirement, and it argues for the smaller truck when the math is tied.
- Availability: the 20 ft size sells out first on summer weekends and month-ends. Reserve early, and reconfirm the specific size, not just "a truck," two days out.
The short version
Count rooms at 150–200 cu ft each, add the garage, and compare against the table honestly. Between sizes on a one-way move, go bigger. Between sizes on a short local move, go smaller and keep the second trip in your back pocket. Either way, weigh the decision before you weigh the truck: size mistakes are the most common reason moving day runs long, and they are made at the reservation counter, not at the loading ramp.