If you are thinking of using a Honda Odyssey as a campervan, or are planning a more permanent build-up for van-dwelling, it’s useful to have these interior dimensions.

I’m not here to convince you that the Honda Odyssey is the perfect minivan for camping, as I’ve already made that argument elsewhere 😉 But if you are already considering the Odyssey, these dimensions should help you plan your conversion.

Dimensions are similar in all Odysseys, but these are from my 2nd generation 2004 model. The 04′ has 65 inches between the sliding doors, which is similar to my 4th generation 2013 Honda Odyssey and the 3rd gen 2009 that I used to own. Note that the 5th generation (2018-2021) has a different arrangement for the 2nd-row seats which incorporates brackets that sit over the floor. But, in the 2004, the floor is “fairly” flat.

First, let’s establish a frame of reference by looking in the back of my 04′ Honda Odyssey and the different ways you can configure the seats.

All seats in place and upright gives you 7 passenger seating

Fold the rear seat into the floor for a 48 inch square box-shaped space

Take out one of the seats and there is room to put a cot from front to back (but my 30″ wide cot would need to be at a slight angle)

Both middle row seats removed–now we are talking! Let’s get some dimensions.

Note that in the 04′ Odyssey, the seats do not fold into the floor. That’s OK with me because it removes 80 lbs from the vehicle and gives better ground clearance.

Child seat for Honda Odyssey — Clickable Amazon Link– The seat I trust to protect my kids

The Honda Odyssey was one of the first minivans to swallow a 4×8 sheet of plywood and the basic dimensions from front to back and side to side, demonstrate that this is true. It is now true of most minivans, including the Toyota Sienna and the Dodge Caravan.

From the rear hatch to the back of the front seats can give a full 8 feet (96 inches). I have the seat forward for the photo, but it doesn’t need to be ALL the way forward for this.

Front-to-back you have a full 8 feet. Side-to-side gives you 48 inches between the wheel wells.

The narrowest width dimension is 4 feet (48 inches) between the wheel wells

But an often-overlooked dimension is the full 65 inches between the sliding doors!

That means you could fit something 6 inches wider than a Queen-sized mattress where the 2nd-row seats would normally be. Note that later generation Odysseys have put cupholders on the doors, which reduces this dimension. This is one of the reasons I chose a second-generation Odyssey.

I travel solo, but if you are a van-dwelling or micro-camping couple, I’d suggest building your bed platform so your shoulders can be between the sliding doors. Your body gets narrower toward your feet, so it makes sense to have your legs at the rear of the van, where it’s narrower.

So to give you an idea of what is possible, let me toss a twin air mattress in the back.

I wouldn’t do this, but it shows you how much space there is.

This is a twin-sized mattress and you could actually get by doing a short trip this way.

But I wouldn’t use an air mattress, even temporarily because:

You can’t put anything underneath it
All air mattresses eventually fail
Even with a platform, it uses up the vertical space, being so thick.
and this…

The rear seat bracket sticks in about 2 inches, which would not be healthy for an air mattress. Keep in mind that you want to build your bed platform higher than this bracket (or use it as a brace, hint, hint)

Instead, for my temporary “Phase 1” project, I selected a Coleman cot.

This cot leaves plenty of space underneath for storage, and room to the sides to get dressed while sitting on the cot. If you need a cot, this is the most comfortable one I’ve owned and is completely silent. No creaking like you get on the old canvas ones. Here’s the requisite Amazon link which won’t cost you anything extra to use, but which helps us to keep the site going.

Coleman 80" Adult Cot — Clickable Amazon Link–Coleman Cot for Tall People

I also like this cot because it is a full 30″ wide and 80″ long, so it fits my 6′ 4″ and 250lb frame.

If you found this information useful, or think it might help others to pick their minivan camper model, please share on your favorite social media. Thanks!