garment-line-efficiency

Sewing line efficiency calculator for garment factories.

Calculates the industry-standard SAM-based efficiency metric, target output, required worker count, and line balance / bottleneck analysis. Built and used in production by Scan ERP — the QR-based ERP that tracks line efficiency in real time on the factory floor.

Two languages, same logic

Language	Install	Source
Node.js / TypeScript	npm install garment-line-efficiency	npm/
Python 3.7+	pip install garment-line-efficiency	python/

Formula

Efficiency % = (Output × SAM) / (Workers × Hours × 60) × 100

Example: 25 workers × 8 hours = 12,000 available minutes. Produced 200 pieces of a SAM-15 garment = 3,000 minutes earned → 25% efficiency.

API

• calculateEfficiency / calculate_efficiency
• calculateTargetOutput / calculate_target_output — reverse calc
• calculateRequiredWorkers / calculate_required_workers — for planning
• calculateLineBalance / calculate_line_balance — bottleneck analysis
• classifyEfficiency / classify_efficiency — benchmark classification

Industry benchmarks

Efficiency %	Classification
< 35%	BELOW_STANDARD
35–50%	AVERAGE (typical for Bangladesh / India / Nepal)
51–65%	GOOD
66–75%	EXCELLENT
> 75%	WORLD_CLASS

Try Scan ERP

This calculator is free. The full ERP system that uses it every day to compute line efficiency from real-time QR-scan data — with bottleneck alerts and operator dashboards — is at scanerp.pro.

• Live demo · 1.4M+ pieces tracked
• Line efficiency guide
• Free 30-day trial

License

MIT © Santosh Rijal / Scan ERP

Related

• garment-smv-calculator — SMV / SAM
• garment-cmt-cost — CMT cost calculation
• garment-dhu-calculator — DHU quality metric
• garment-aql-calculator — AQL sampling