Does efficiency include downtime?

It should. Line efficiency is actual output divided by standard output over the same hours, so stops, slow cycles and rejects all sit inside it. If your figure excludes stops, use uptime instead.

Why can the rate gap go negative?

Because it compares the effective rate with demand. A negative gap tells you how many units an hour the line is short, and the theoretical rate shows whether lanes or speed can close it.

Do stations count like lanes?

Yes when they run in parallel at the same standard rate. If stations run in series, the slowest station sets the rate, so use the throughput page instead.

What efficiency should I enter?

Use output divided by standard over at least a week, changeovers and rejects included. A single good hour overstates the rate and hides the shortfall this page is meant to show.

Conveyors calculator

Line Rate Calculator

Turn lanes or stations and a standard rate into the effective hourly output after line efficiency, then compare it with the output the schedule needs. You need lanes, rate, efficiency and the required rate.

What this calculator does

Effective hourly output from parallel lanes and a standard rate after efficiency, checked against required output.

Formula used

Theoretical line rate = active lanes × standard output per lane-hour
Effective line rate = theoretical line rate × line efficiency % ÷ 100
Rate lost to inefficiency = theoretical rate − effective rate
Rate gap = effective rate − required output per hour

Inputs explained

Active Producing Lanes: Parallel lanes or stations loaded and producing at standard.
Standard Output per Lane-Hour: Demonstrated units one lane makes in an hour at standard.
Expected Line Efficiency: Actual output ÷ standard output over the same run.
Required Output: Units per hour the schedule or next station needs.

How to use the result

Best suited to quoting a multi-lane line against demand, sizing one more lane after a demand rise, tracking efficiency after a changeover.
An hourly average: it cannot show which lane or station drags the group down. Counts lanes as interchangeable; one starved lane costs the same as one stopped lane.

Current U.S. benchmarks

The U.S. has 21,668 machinery manufacturing establishments employing about 1,086,146 workers (Census County Business Patterns, 2023).

Common questions

Does efficiency include downtime? It should. Line efficiency is actual output divided by standard output over the same hours, so stops, slow cycles and rejects all sit inside it. If your figure excludes stops, use uptime instead.
Why can the rate gap go negative? Because it compares the effective rate with demand. A negative gap tells you how many units an hour the line is short, and the theoretical rate shows whether lanes or speed can close it.
Do stations count like lanes? Yes when they run in parallel at the same standard rate. If stations run in series, the slowest station sets the rate, so use the throughput page instead.
What efficiency should I enter? Use output divided by standard over at least a week, changeovers and rejects included. A single good hour overstates the rate and hides the shortfall this page is meant to show.

Last reviewed 2026-10-01.