RAM ProMaster camper conversion
The ProMaster comes in 10 variants in the planner, with cargo areas from 2.67 m to 4.07 m long inside and payloads up to about 2,186 kg. Drivetrains: FWD.
Yes — you can stand up in a RAM ProMaster from the High roof up: 1.93 m floor-to-headliner, about 1.86 m after a typical 7 cm floor and ceiling build-up, which stands an adult up to about 1.80 m.
The ProMaster shares its body with the Fiat Ducato — same dimensions, same apertures, same conversion decisions. Everything on this page applies to the whole family. Fiat Ducato →
Interior dimensions by variant
| Variant | Drive | Interior L × W × H | Payload ≈ | Wheelbase | Ext. height |
|---|---|---|---|---|---|
| 118" · Low roof · 1500 | FWD | 2.67 × 1.87 × 1.66 m | 1,887 kg | 3.00 m | 2.33 m |
| 136" · Low roof · 1500 | FWD | 3.12 × 1.87 × 1.66 m | 1,842 kg | 3.45 m | 2.36 m |
| 136" · High roof · 1500 | FWD | 3.12 × 1.87 × 1.93 m | 1,724 kg | 3.45 m | 2.63 m |
| 136" · Low roof · 2500 | FWD | 3.12 × 1.87 × 1.66 m | 1,996 kg | 3.45 m | 2.36 m |
| 136" · High roof · 2500 | FWD | 3.12 × 1.87 × 1.93 m | 1,882 kg | 3.45 m | 2.63 m |
| 159" · High roof · 2500 | FWD | 3.71 × 1.87 × 1.93 m | 1,814 kg | 4.04 m | 2.59 m |
| 136" · Low roof · 3500 | FWD | 3.12 × 1.87 × 1.66 m | 2,186 kg | 3.45 m | 2.36 m |
| 136" · High roof · 3500 | FWD | 3.12 × 1.87 × 1.93 m | 2,068 kg | 3.45 m | 2.63 m |
| 159" · High roof · 3500 | FWD | 3.71 × 1.87 × 1.93 m | 2,009 kg | 4.04 m | 2.59 m |
| 159" EXT · High roof · 3500 | FWD | 4.07 × 1.87 × 1.93 m | 1,960 kg | 4.04 m | 2.60 m |
Interior figures are between the walls and floor-to-headliner, derived from manufacturer specs and calibrated against published cargo dimensions. Payload ≈ gross weight minus kerb weight — it varies with engine and options, so treat it as a planning guide.
- Dimensions source: Ram Trucks — 2026 ProMaster specifications · checked Sep 2026
- Door openings: Ram Body Builder — ProMaster Views & Charts, Cargo Van (06/2020) · checked Sep 2026
What fits
- Standing: after a typical floor and ceiling build-up (~7 cm), the ProMaster 136" · High roof · 1500 leaves about 1.86 m of headroom.
- Bed across: at 1.87 m between the walls, the ProMaster 118" · Low roof · 1500 takes a standard 1.86 m mattress transversely — the layout that frees the most floor.
- Parking: every variant is over 2.0 m tall outside — underground garages and most height barriers are out.
Payload budget
Depending on variant, the ProMaster carries roughly 1,724 kg to 2,186 kg of conversion, gear, water and people before hitting the gross weight limit. A typical full build lands between 400 and 700 kg before you pack — weigh the plan before you cut.
Check your numbers in the payload calculator →RAM ProMaster camper layouts and floor plans
Ready-made layouts drawn to scale on this van's real interior — wheel arches, wall taper and door openings included. Open one in the planner and change it.
RAM ProMaster 159" · High roof · 2500
Family camper · 2 berths · 368 kg built
Open this layout →Fiat Ducato L2H2
Weekender · 2 berths · 145 kg built
Same body as the ProMaster
Open this layout →Fiat Ducato L3H2
Family camper · 2 berths · 368 kg built
Same body as the ProMaster
Open this layout →Fiat Ducato L4H2
Mobile office · 2 berths · 320 kg built
Same body as the ProMaster
Open this layout →Peugeot Boxer L2H2
Weekender · 2 berths · 145 kg built
Same body as the ProMaster
Open this layout →Same van, different badge
These vans are built on the same body as the ProMaster — the dimensions and layout advice carry over one-to-one:
Frequently asked
How long is the ProMaster inside?
The cargo area runs from 2.67 m in the shortest variant to 4.07 m in the longest, measured from the bulkhead to the rear doors.
Can I stand up in a RAM ProMaster?
Yes — you can stand up in a RAM ProMaster from the High roof up: 1.93 m floor-to-headliner, about 1.86 m after a typical 7 cm floor and ceiling build-up, which stands an adult up to about 1.80 m. By roof height — Low: 1.66 m raw, ~1.59 m finished — sit-down only; High: 1.93 m raw, ~1.86 m finished — stands a 1.80 m adult. Rule of thumb: you need a raw interior height of your own height plus 10 cm.
How much payload does a ProMaster have for a conversion?
Roughly 1,724 kg to 2,186 kg depending on variant and engine — gross weight minus kerb weight. The build, water, gear and passengers all come out of that number.
Are there ready-made RAM ProMaster camper layouts or floor plans?
Yes — the VanPlot gallery has ready-made layouts on the ProMaster body, each with a floor plan drawn to scale on the real interior. Open one in the planner and change it.
Which vans are the same as the ProMaster?
The ProMaster shares its body and dimensions with: Fiat Ducato, Peugeot Boxer, Citroën Relay, Toyota Proace Max, Opel Movano (2021+), Vauxhall Movano (2021+), Citroën Jumper.
Figures derived from manufacturer specifications; interior dimensions calibrated against published cargo volumes. Always verify against your actual vehicle — model years differ.
Plan your ProMaster in 3D
Every variant on this page is in the planner with real wheel arches, wall taper and door apertures. Place the bed, watch the payload — before you buy the van.
Who makes this
I'm Vladimir. I'm planning my own conversion, and none of the tools I tried could tell me whether a layout would fit or what it would do to the rear axle, so I made this one. I work on it alone. If something's wrong or missing, write to me — the address goes to my inbox.
Vladimir Šterjoski