LC Cutter Table Calculator

Enter an author name, title word, or other main entry to generate a suggested LC-style Cutter (book number) using the Library of Congress Classification and Shelflisting Manual G 63 Cutter table. This is a first-pass table lookup for the Cutter component only — it does not assign an LCC class number, a complete call number, or an official Library of Congress cataloging decision. Letters not listed in G 63 are not interpolated. Adjust the suggestion against your local shelflist.

How to Use the LC Cutter Table Calculator

Generate a first-pass LC book-number suggestion from the filing word and the implemented Library of Congress CSM G 63 table.

  1. Enter the filing word for the main entry, usually an author surname or a title word. For “Surname, Given,” text before the comma is used.
  2. Select Calculate LC Cutter.
  3. Review the suggested Cutter, normalized filing word, G 63 row, and construction steps.
  4. If the table does not define the needed letter combination, use the shelflist instead of inventing a digit.
  5. Fit the suggestion into the existing shelflist and confirm local policy before adding it to a record.

Methodology, examples, and interpretation

The calculator removes punctuation, uses Latin letters, and applies separate G 63 mappings for an initial vowel, initial S, initial Qu, or another consonant. A later letter may add a digit from the expansion row. It does not interpolate blank table entries, assign Qa–Qt values from the published 2–29 span, or select numeral Cutters in .A12–.A19.

Campbell produces .C36, IBM produces .I26, and Idaho produces .I33. Use a suggestion as the Cutter component after an established LCC class, then adjust it for filing order.

The output is a table-derived starting point. A valid-looking suggestion can still conflict with an existing Cutter, edition treatment, biography pattern, or local filing decision.

Worked material cutting example

  • Master Sheet dimensions: 2,400 mm × 1,200 mm; Part required: 600 mm × 400 mm; Kerf blade margin: 3 mm.
  • Layout Orientation A: Along length: floor((2400 + 3)/(600 + 3)) = 3 parts; Along width: floor((1200 + 3)/(400 + 3)) = 2 parts. Total = 3 × 2 = 6 parts.
  • Layout Orientation B (rotated): Along length: floor((2400 + 3)/(400 + 3)) = 5 parts; Along width: floor((1200 + 3)/(600 + 3)) = 1 part. Total = 5 × 1 = 5 parts.
  • Optimization choice: Orientation A yields 6 finished parts with 82.5% sheet utilization.
  • Scrap waste: 17.5% offcut area.

Mistakes, limitations, and privacy

The tool does not assign an LCC class, build a complete call number, search Classification Web, or make an official Library of Congress decision. Calculation occurs in the browser; a filing word is sufficient, so do not enter patron or confidential information.

  • Use the authorized main entry rather than assuming author or title.
  • Do not treat the Cutter as the subject classification number.
  • Romanize non-Latin filing words before entry.
  • Do not use this LC G 63 result as a Dewey Cutter-Sanborn number.

FAQ

What is an LC Cutter number?

In Library of Congress Classification, the Cutter (book number) is the alphanumeric part of the call number that files a work alphabetically within a class, usually from the main entry. It is not the class number that describes the subject.

Is this an official Library of Congress Cutter?

No. The result is a suggested first-pass LC Cutter from the G 63 table — not an official Library of Congress Cutter. Official assignment depends on the LC or local shelflist, filing rules, and cataloging policy.

Which table does this calculator use?

The Cutter table in LC Classification and Shelflisting Manual instruction sheet G 63 (vowels, S, Qu, other consonants, and the expansion row). It does not use Cutter-Sanborn or Dewey Cutter tables.

Why do some names return an error instead of a Cutter?

G 63 does not list every second letter. Those Cutters are developed from the shelflist. This tool also does not invent Qa–Qt digits (published as the span 2–29) or pick a numeral Cutter in .A12–.A19.

Does this assign a Library of Congress class number?

No. You already need the LCC class from schedules or copy cataloging. This calculator only suggests the Cutter component.

How should I enter the name?

Enter the filing word of the main entry — usually the author’s surname, or the title if the work is entered under title. Text before a comma is used as the surname. Punctuation is stripped; use Latin letters (romanize other scripts first).

Can I use this for Dewey Decimal Cutter-Sanborn numbers?

No. Dewey/Cutter-Sanborn author tables are a different system. Mixing them with LC G 63 produces the wrong book number.

Does the calculator save the name I enter?

The Cutter calculation runs in your browser and needs only a filing word. Do not enter patron information or other confidential data.