• Count OCR confidence scores strictly below a configurable 0–1 review threshold and return the affected fraction.
• Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
• Expose records that need human review without silently rewriting the source data.

A score exactly equal to the threshold is not counted; confidence calibration differs by OCR engine and model version.^[1]

• The tool treats scores as independent words and does not assess layout, character errors, language-model bias, or whether confidence is calibrated to accuracy.
• Preserve the original value and record the rule version when using this result in an archival workflow.

• Crowdsourcing Review Consensus Agreement Percent

  Use Crowdsourcing Review Consensus Agreement Percent to calculate reviewer agreement percentage and dissenting contribution count from safe integer contribution totals. Choose this tool when you need to count OCR confidence scores strictly below a configurable 0–1 review threshold and return the affected fraction.

• Proportion Confidence Interval

  Use Proportion Confidence Interval to estimate a population proportion with a two-sided normal-approximation confidence interval. Choose this tool when you need to count OCR confidence scores strictly below a configurable 0–1 review threshold and return the affected fraction.

• Oral History Abstract Word Limit Truncation Point Finder

  Locate the truncation point for an oral history abstract by counting its words and returning the leading portion that fits a word limit.

• Transcription Progress Character Count Percent Calculator

  Report transcription progress as the percentage of transcribed characters relative to the total expected character count.

• Annual Report Output Metrics Rollup Aggregator

  Roll up periodic output metrics such as quarterly accessions or reference counts into a count, total, mean, minimum and maximum for annual reporting.