Open representative boxes and measure the occupied length along the filing direction. Record whether the boxes contain similar material and whether they are full, partially filled, or mixed.

Formula: Comparable boxes × average occupied inches per box × sampled sheets per inch.

Example: 40 similar boxes averaging 12 occupied inches contain approximately 72,000–91,200 sheets at the 150–190 planning range. At 170 sheets per inch, the midpoint estimate is 81,600 sheets.

For boxes with multiple filing rows, measure each row and add the occupied lengths. For stacked packets or unusual layouts, sample actual sheets per box rather than forcing a single-row formula.

Measure each occupied file run inside the drawer. In a typical front-to-back arrangement, measure the length occupied by the files rather than the width of the cabinet.

Formula: Sum of occupied filing inches across all included drawers × sheets per inch.

Example: A four-drawer cabinet averaging 18 occupied inches per drawer contains 72 filing inches. That represents approximately 10,800–13,680 sheets using the planning range.

Do not assume every drawer has the same fill level. Record empty drawers, supplies, and collections excluded from scanning separately.

Lateral drawers can hold files in different orientations and may contain multiple rows. Measure each occupied file run according to its actual arrangement.

Formula: Total occupied inches across all file runs and drawers × sheets per inch.

Example: Five drawers with one 30-inch occupied run each contain 150 filing inches, or approximately 22,500–28,500 sheets.

A cabinet labeled 36 inches wide does not automatically provide 36 usable filing inches in every drawer. Measure the internal layout and avoid double counting intersecting dimensions.

Measure occupied file runs on every shelf level, bay, and accessible side. Include only the collections in the project.

Formula: Occupied linear feet × 12 × sheets per inch.

Example: 20 occupied linear feet represents 240 filing inches, or approximately 36,000–45,600 sheets.

Mobile shelving reduces aisle space but does not create a universal sheet count per unit. Inventory the actual shelf runs and sample different record types separately.

Binder covers, rings, tabs, sleeves, and case walls can occupy substantial space without adding scannable sheets. Spine width is not the same as paper thickness.

Preferred formula: Comparable binders or cases × average sampled sheets per container.

Example: If representative binders average 240 sheets, 25 similar binders contain an estimated 6,000 sheets.

Identify removable pages, bound material, sleeves, and originals that require special handling. Preparation requirements can matter as much as volume.

Measure the height of a reasonably aligned stack without compressing it unnaturally. Count a representative portion to establish sheets per inch for that stack type.

Formula: Stack height × sampled sheets per inch.

Loose uniform paper may be denser than folder-based files. Do not automatically apply a filed-record density to a clean stack or a tightly packed ream.

1. Select representative sections across different containers and locations.
2. Measure each section as it is normally filed.
3. Count the physical sheets to be included in scanning.
4. Record folders, dividers, and other material affecting density.
5. Add the sample sheet counts and measured inches.

Sampled density = total sample sheets ÷ total sample filing inches.

Example: Three sections contain 320 sheets in 2 inches, 510 sheets in 3 inches, and 700 sheets in 4 inches. Combined density is 1,530 ÷ 9 = 170 sheets per inch.

Use that density for comparable records. Sample unusual collections separately.

When containers are comparable, count the included sheets in several representative containers and calculate an average.

Average sheets per container = total sampled sheets ÷ sampled containers.

Estimated collection sheets = comparable container count × average sheets per container.

If six representative boxes contain 12,600 sheets, the average is 2,100 sheets per box. Eighty comparable boxes would therefore contain an estimated 168,000 sheets.

Separate partial boxes, large-format material, and unusually dense or sparse collections instead of averaging everything together.

This method is useful when folders are easy to inventory and their contents can be sampled.

Estimated sheets = folder count × average sampled sheets per folder.

Example: 900 folders averaging 35 sheets each represents approximately 31,500 sheets.

Thin administrative folders and thick case files should not share one average. Count multiple representative folders and record the variation.

One folder may become one PDF or many separate documents. Define the file boundaries before estimating indexing effort.

Approximate document count = total images ÷ sampled average images per document.

If 60,000 images average 12 images per defined document, the estimate is 5,000 documents. Sample by document category when lengths vary substantially.

Planned index values = documents × required fields per document.

If 5,000 documents require four fields each, that is 20,000 planned field values.

This is a workload indicator, not a production-time estimate. Missing identifiers, handwriting, field validation, and exceptions can change the effort involved.

Review indexing examples by industry to choose fields that support real retrieval tasks.

Exterior box dimensions, cabinet width, and shelf capacity can include walls, mechanisms, empty space, and non-record material. Measure occupied file runs or use sampled sheets per container.

Loose invoices, thick folders, bound records, and sleeved documents can have different densities. Group comparable material and calculate each group separately.

Linear inches measure length, cubic feet measure volume, and scanning images count captured sides. These units cannot be substituted without an appropriate conversion based on the actual records.

The easiest box to open may not represent the archive. Include different locations, dates, departments, and fill levels. If samples vary widely, increase sampling or split the collection into more consistent groups.

For this guide’s initial planning calculation, use 150–190 physical sheets per occupied filing inch, then calibrate it against your files. Sheet density varies, and double-sided content can produce more scanning images than physical sheets.

There is no single reliable count for every box. A box with 12 occupied filing inches would contain approximately 1,800–2,280 sheets under the guide’s planning assumptions. Measure the actual contents and sample comparable boxes.

A cabinet with 18 occupied filing inches in each of four drawers has 72 filing inches. At 150–190 sheets per inch, that represents approximately 10,800–13,680 sheets. Different drawer layouts and fill levels change the estimate.

No. A basic inventory, representative measurements, and a description of the records are enough to begin. Sampling can improve the estimate before the scope and pricing are finalized.

Estimate oversized sheets, bound volumes, and microform separately using appropriate item counts and format information. They require different capture methods and should not be converted using a standard office-file density.

Explore large format scanning and document scanning services.