40cm is the most common internal width for UK kitchen drawer organisers. The dimension sits in the middle of the medium-drawer band (30–45 cm) and supports the widest range of module combinations. If you're picking up a tape measure for the first time and your drawer reads ~40cm, you're in the easiest band to fit.
The standard 40cm layouts
- Cutlery + utility. Fork & Spoon 8×5 (32cm) + Long Utensil 9×3 (36cm) — wait, that exceeds 40cm. Better fit: Fork & Spoon 8×5 + a Small Tools 4×3 (16cm) side by side, total 48cm — still over. The right two-module layout for 40cm is Fork & Spoon 8×5 (32cm) plus the remaining 8cm filled by a Mini Rectangle 2×2 module sitting flush against the side wall.
- Cutlery + compact knife. Fork & Spoon 8×5 (32cm) plus the Compact Knife Block 10×3 — 32 + 12 = 44cm, technically over 40cm. The 40cm sweet spot is one full module + small modules, not two large modules.
- Single module + freedom. The Versatile Rectangle 8×6 (32cm × 24cm) covers cutlery and tools in one module, leaving 8cm of grid for a single Mini Rectangle 2×2 or a small bin.
Why 40cm is the easiest band
Two reasons:
- Module footprints cluster around 32cm (8 cells) — leaving 8cm of grid for a single 2-cell-wide module that fits any small accessory category.
- The grid base scales cleanly. A 40cm drawer fits a 10-cell-wide base (10 × 4 cm), or rounds down to a 9-cell base if the actual measurement is 36–39cm.
How to size your 40cm drawer fit
The drawer builder takes your exact internal measurement (round down to the nearest cm) and shows the fits. If you're 38–42cm internal, the builder picks the closest base and previews modules that fit. For broader context, see the drawer width entry. Browse the medium drawer organisers collection for ready-made fits.