Fixed bed vs convertible bed in a camper van: the real space and weight math
· 7 min read
This is the first real decision of every conversion, and the internet answers it with vibes: “fixed beds are comfy”, “convertibles save space”. Both true, both useless. Here is the decision with numbers attached — because the trade is measurable.
What a fixed bed actually costs you
A fixed double is roughly 1.9 × 1.4 m of permanently occupied floor — about 2.7 m² that is bedroom 24 hours a day. In a long-wheelbase van with ~4 m of cargo floor, that's fine: 2 m of living space remains. In a compact van with ~3.1 m (a Ducato L2, say), a fixed longitudinal bed leaves ~1.2 m — a corridor, not a living room.
What you get for that price is worth naming precisely:
- The garage. Raise the platform to 100–115 cm and everything lives underneath: bikes, water, batteries, tools. This is where heavy kit belongs anyway — low and between the axles helps your axle loads.
- Zero daily conversion. No 10-minute furniture ritual when you're tired, ill, or it's raining.
- Real bedding. A proper mattress that stays made.
What a convertible actually saves you
A dinette that becomes a bed reclaims those 2.7 m² for daytime living — a table for four, a workspace, a lounge. The honest costs: 5–10 minutes of conversion twice a day (survey the vanlife forums: this is the #1 stated regret), cushion-pad sleeping comfort, nowhere for a garage, and mechanisms that add build complexity and ~15–30 kg of hinges, slats and supports over a simple fixed platform. (A Murphy bed splits the difference: fold-away by day, real mattress by night.)
The transverse escape hatch
There's a third answer that changes the math: sleep across the van. A transverse fixed bed occupies ~1.4 m of van length instead of ~1.9 m — half a metre of living space back, for free. The catch is one hard number: you need roughly 1.85 m between the finished walls. The Ducato/ProMaster family (~1.87 m bare) is the only common platform where that works after insulation without flaring the walls — Sprinters and Transits (~1.78 m) need wall pods or a diagonal compromise. If you're under ~1.80 m tall, this single fact might choose your van for you — more in our Ducato lengths guide.
The decision table
| Fixed (longitudinal) | Fixed (transverse) | Convertible dinette | |
|---|---|---|---|
| Van length used | ~1.9 m | ~1.4 m | 0 m by day |
| Garage | Yes, large | Yes | No |
| Daily effort | None | None | 2× 5–10 min |
| Sleeping comfort | Best | Best (if you fit) | Cushion-grade |
| Weight | Baseline | Baseline | +15–30 kg mechanisms |
| Needs | ≥ ~3.5 m cargo floor | ~1.85 m interior width | Tolerance for the ritual |
How to actually decide
Rule of thumb from hundreds of build threads: full-timers go fixed, weekenders go convertible — the conversion ritual is charming 20 nights a year and corrosive 200 nights a year. But don't decide in the abstract: build your van twice in a planner — once with each bed — and compare what remains. Ten minutes of dragging furniture shows you the corridor-vs-living-room reality that no opinion piece can. The free plan is enough for both drafts — no download, no card.