Cabinet Hardware Calculator
Work out exactly how many knobs and pulls a kitchen or bath needs from your door and drawer counts. Add your own prices for a full cost estimate — nothing here uses a stale national average.
How this calculator works
Doors each get one knob. Drawers each get either one pull or two, depending on your chosen style. Screws are shown for reference only, since most hardware ships with its own:
knobs_for_doors = door_count × 1 pulls_for_drawers = drawer_count × (style === 'double' ? 2 : 1) total_hardware = knobs_for_doors + pulls_for_drawers screws_needed = total_hardware × 1 // most hardware ships with its own screws
This assumes the common convention — knobs on doors, pulls on drawers — covered in the FAQ below. If your kitchen uses pulls on doors too, treat every door as a "drawer" in the door field's place for a rough estimate, since the underlying math is the same either way.
Worked example
A kitchen with 15 doors and 8 drawers, double pulls on drawers:
- Knobs: 15 × 1 = 15.
- Pulls: 8 × 2 = 16.
- Total hardware: 15 + 16 = 31 pieces.
At $3.50 per knob and $6 per pull, that example totals 15 × $3.50 + 16 × $6 = $148.50.
Counting your doors and drawers
- Doors — count every cabinet door, upper and lower, including pantry and appliance panel doors.
- Drawers — count every drawer front, including narrow utensil drawers unless you're leaving those unhandled.
- Wide drawers — if only some drawers are wide enough for double pulls, run this calculator twice: once for standard drawers at single pulls, once for wide drawers at double pulls, and add the results.
How much does cabinet hardware cost?
Rather than quoting a national average that's stale the day it's published, this calculator prices the job from what you actually enter. Knobs and pulls are priced separately, since they're often priced differently even within the same collection — give both and each is itemized and totaled. The estimate doesn't include installation labor or the cost of patching old hardware holes.
Frequently asked questions
Knobs vs pulls — is there a standard rule for which goes where?
Not a strict rule, but the common convention is knobs on doors and pulls on drawers, since a drawer benefits from more leverage to pull straight out. Some kitchens use pulls throughout, or knobs throughout, as a style choice.
Do wider drawers need two pulls instead of one?
Yes, commonly recommended once a drawer front is roughly 24 in or wider — two pulls give more even leverage and look more proportionate than one pull centered on a large front.
What's the standard mounting hole spacing for pulls?
Common options include 3 in, 3.75 in, 4 in, 5 in and 6.25 in center-to-center, but there's no single universal standard — spacing varies by manufacturer and collection, so always confirm against your specific product and cabinets.
How do I keep hardware placement consistent across a whole kitchen?
Pick one placement rule — same distance from the top corner for upper doors, same distance from the bottom corner for lower doors, centered on top for drawers — and use a drilling template or jig to replicate it exactly on every piece.