Labour Standard Minutes Calculator

Work out labour standard minutes instantly with clear inputs, formula shown and shareable results.

About Labour Standard Minutes Calculator

Standard minute value is the sum of operation basic times uplifted by allowance. Dividing SMV by expected line efficiency gives the actual operator minutes a garment will really consume, which is the figure to use for costing and capacity planning rather than the theoretical SMV.

Formulas

Standard minute value

SMV = operations x average operation time x (1 + allowance %)

Real consumption

Actual minutes per piece = SMV / line efficiency

Worked example

With the default values below, Labour Standard Minutes Calculator returns Standard Minute Value of 11.3850. Change any input above and every figure here is recalculated in your browser.

Inputs used

Number Of Operationsminimum 1: 18
Average Operation Timeminimum 0.001 minutes: 0.55 minutes
Allowanceaccepts 0–60 %: 15 %
Expected Line Efficiencyaccepts 5–100 %: 60 %

Results

Standard Minute Value: 11.3850
Basic Minutes: 9.9000
Actual Minutes Per Piece: 18.9750
Pieces Per Operator Hour: 3.162

Step by step

1Values used
2Standard minute value
3Real consumption
4Standard Minute Value= 11.3850
5Basic Minutes= 9.9000
6Actual Minutes Per Piece= 18.9750
7Pieces Per Operator Hour= 3.162

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why is SAM sometimes quoted instead of SMV?

Standard allowed minutes and standard minute value mean the same thing in garment manufacturing — basic time plus allowances for one complete garment.

How is SMV validated?

By comparing earned minutes against actual output over a settled run. If operators consistently beat SMV by a wide margin the standard is loose, and if nobody reaches it the method or the rating was wrong.