G Decor
Cabinet Knob Size Calculator — Find the Right Hardware Size
Sizing is where most people get cabinet hardware wrong — a beautiful knob half an inch too small on a wide drawer front, a bar pull that dwarfs a small upper. The cabinet stays the same; the hardware makes the room look either considered or accidental.
The rule the workshop uses is roughly one-quarter of the door width, adjusted for cabinet type and finish. A 12-inch upper wants a small knob; a 30-inch drawer wants a long bar pull. The margin between right and wrong is narrower than most homeowners guess, which is why we built this tool. Enter your cabinet door or drawer width in inches, and the calculator returns the size we would specify — with a recommended piece from the Birmingham range.
If you have a mixed run of cabinet sizes, run the calculator once per door width. Consistency of proportion matters more than consistency of hardware size — a kitchen with three knob sizes chosen well always reads better than a kitchen with one size forced across every door.
The calculator
Find the right knob or pull for your cabinet
Sizing reference (no calculator required)
If you would rather work from the chart, the same recommendations in table form:
| Door / drawer width | Knob size | Bar pull size (centre-to-centre) |
|---|---|---|
| Under 15 in (upper cabinets, narrow lowers) | 30–38 mm (1¼–1½ in) | 96 mm (3¾ in) |
| 15–24 in (standard base cabinets) | 38 mm (1½ in) | 128 mm (5 in) |
| 24–36 in (drawers, pantry) | A single knob looks lost | 160 mm (6¼ in) |
| Over 36 in (refrigerator surround, wide drawer fronts) | Pair two 38 mm knobs at ⅓ and ⅔ | 192 mm (7½ in) or larger |
Recommended pieces by size
| Size | Style | Piece |
|---|---|---|
| 30–38 mm knob | Hand-thrown ceramic | Milano Ceramic Cabinet Knob |
| 38 mm knob | Mother-of-pearl on brass | Elizabeth Mother-of-Pearl Knob |
| 128 mm bar pull | Diamond-knurled satin brass | Chelsea Diamond-Knurled Bar Pull |
| 160 mm bar pull | Architectural knurled brass | Mayfair Knurled Bar Pull |
A note on measurement
Measure the door or drawer front, edge to edge — not the interior cabinet box. If your doors are inset (flush with the frame) the door width is what you measure. If they are overlay (sitting proud of the frame) the door width is still what you measure, not the cabinet opening. The calculator is agnostic to overlay style.
Every piece is hand-cast at our workshop in Birmingham, England, and ships DDP to the US with duties pre-paid — $16.95 flat shipping, free over $150. If you would like a physical sample before ordering a full kitchen's worth, our trade programme sends a complimentary sample kit within 48 hours.
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