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DIY Cost Tools

DIY Cost Tools

Cabinet Hardware Quantity Calculator

Count drawer pulls and door knobs, extras, and whole hardware packs.

Whole number from 0 to 10000 drawers.
Whole number from 0 to 10000 doors.
Whole number from 0 to 10 pulls.
Whole number from 0 to 10 knobs.
Number from 0 to 100 %.
Whole number from 1 to 1000 pieces.

Enter values in the units shown. Empty fields, fractions, comma-formatted numbers, values outside the listed ranges, and non-finite values are rejected.

Pieces to order
Whole packs

How to use this calculator

  1. Measure the project or enter costs from a current quote or product label.
  2. Adjust the quantities, coverage, package size, and allowances to match your situation.
  3. Select Calculate, then check the method, worked example, and limitations below.

Formula and method

Pieces = (drawers × pulls + doors × knobs) × (1 + spare%). Round pieces and packs up.

Whole packages and pieces are rounded up. Results disappear when an input changes until the new values are calculated.

Worked example

Drawers 18 drawers; Doors 12 doors; Pulls per drawer 1 pulls; Knobs per door 1 knobs; Spare percentage 10 %; Pieces per pack 10 pieces. Results: Pieces to order 33 pieces; Whole packs 4 packs.

The example uses the values initially displayed in the fields.

Limitations

Keep separate counts when pulls and knobs come in different packs or finishes. Check screw lengths and hole spacing.

Review and reference

Reviewed October 5, 2026. The default example, input boundaries, arithmetic, rounding, and invalid input behavior were checked. The method is explained on How Our Calculators Work; replace example inputs with measurements or current product specifications. This is a planning estimate.

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