garment-smv-calculator 1.0.0

SMV (Standard Minute Value) calculator for garment industry sewing operations. Formula: SMV = Basic Time x (1 + Allowance%). Built and used in production by Scan ERP.

garment-smv-calculator

SMV (Standard Minute Value) calculator for the garment industry. Formula: SMV = Basic Time × (1 + Allowance%). Built and used in production by Scan ERP.

Install

pip install garment-smv-calculator

Usage

from garment_smv_calculator import calculate_smv, calculate_hourly_capacity

# Calculate SMV for a sewing operation
smv = calculate_smv(
    observed_time_seconds=18,        # From stopwatch observation
    performance_rating=1.05,          # Westinghouse: skilled at 105%
    allowance_percent=0.30,           # 30% (personal + fatigue + delay)
)
print(f"SMV: {smv:.2f} minutes per piece")
# → SMV: 0.41 minutes per piece

# Calculate operator hourly capacity
capacity = calculate_hourly_capacity(smv_minutes=smv, efficiency_percent=85)
print(f"Hourly capacity at 85% efficiency: {capacity} pieces")

Background

SMV is the foundation metric for piece-rate wage calculation in CMT garment factories. Without accurate SMV, every downstream calculation produces wrong numbers.

Read the complete guide: SAM & SMV Formula in Garment Industry

Related Reading

• How to Calculate SMV: Stopwatch Method
• SMV Calculation Software Comparison
• SAM Values Reference Table

License

MIT — Built by Santosh Rijal of Scan ERP