How do you calculate travel time savings from slotting?

Multiply the picks you reroute by the labor cost saved per pick, then by the realized travel reduction percentage, and add any fixed slotting setup fee. With 4,000 picks at $0.18 each, a 70% realized reduction and a $1,200 setup fee, that is 4,000 x 0.18 x 0.70 + 1,200 = $1,704.

Why is the setup fee added instead of subtracted?

In this model the fixed adder rolls the one-time slotting cost into the total figure so you see the full cash movement in one number. The variable savings here is $504 and the fixed adder is $1,200, giving $1,704. If you want net benefit, subtract the setup fee back out or run the Slotting ROI calculator for a true payback.

What is a good travel reduction percentage?

Well-run velocity-based reslots typically capture 20-40% travel reduction on the affected picks; 70% is aggressive and usually only seen when correcting badly slotted zones or introducing golden-zone assignments for the fastest movers.

What does savings per pick tell me?

It is total savings divided by picks rerouted. Here $1,704 / 4,000 = $0.426 per pick, which lets you compare this initiative against other labor projects on a normalized, per-transaction basis.

Travel time savings vs. slotting ROI, which should I use?

Use Travel Time Savings to size the annual or per-wave labor benefit; use Slotting ROI when you need payback period and multi-year net value against the full investment.

How often should I recompute this?

Recompute each time your item velocity mix shifts materially, typically quarterly, because slotting drifts and the realized reduction percentage erodes as fast movers migrate.

WMS, Warehouse Labor & Fulfillment calculator

Travel Time Savings Calculator

Travel Time Savings quantifies the labor dollars a warehouse recovers when it reslots inventory so pickers walk shorter paths. In most manual pick operations, walking is 50-60% of a picker's clock, so shaving a fraction of that travel translates directly into fewer paid picking hours. Slotting engineers, WMS analysts, and DC operations managers use this to justify a slotting project or a re-slot wave before committing labor and software spend. It matters because travel is the single largest non-value-added cost in discrete order picking.

What this calculator does

Estimate the labor dollars recovered when optimized pick paths and slotting cut walking time across a fulfillment shift.
A warehouse manager evaluating a slotting or pick-path optimization project sizes the labor savings before committing to the re-slot.
Computes total labor savings from rerouted picks (picks x cost per pick x realized reduction %) plus the fixed slotting setup fee, and the blended savings per pick.

Formula used

Total savings = picks rerouted x labor cost per pick saved x realized reduction% + slotting setup fee
Savings per pick = total savings / picks rerouted

Inputs explained

Picks rerouted per shift:
Labor cost per pick saved:
Realized travel reduction:
Slotting setup fee:

How to use the result

Use it when building the business case for a slotting change, a golden-zone re-slot, or a WMS travel-optimization module before you commit picker hours.
It credits only travel labor at a flat per-pick rate; it ignores congestion, replen interference, and the fact that realized reduction usually decays as slotting drifts out of alignment over the year.

Current U.S. benchmarks

On-highway diesel averages $4.58 per gallon this week (EIA), trending down over recent periods. Truck tonnage is up 3.4% year over year (ATA via FRED).
Manufacturing hourly earnings average $30.27 (BLS, Jun 2026), up 4.4% from a year earlier. Median machinist pay is $28.24/hr (OEWS 2025), with state medians on each state page. Manufacturers have 529k open positions nationally (BLS JOLTS).

Common questions

How do you calculate travel time savings from slotting? Multiply the picks you reroute by the labor cost saved per pick, then by the realized travel reduction percentage, and add any fixed slotting setup fee. With 4,000 picks at $0.18 each, a 70% realized reduction and a $1,200 setup fee, that is 4,000 x 0.18 x 0.70 + 1,200 = $1,704.
Why is the setup fee added instead of subtracted? In this model the fixed adder rolls the one-time slotting cost into the total figure so you see the full cash movement in one number. The variable savings here is $504 and the fixed adder is $1,200, giving $1,704. If you want net benefit, subtract the setup fee back out or run the Slotting ROI calculator for a true payback.
What is a good travel reduction percentage? Well-run velocity-based reslots typically capture 20-40% travel reduction on the affected picks; 70% is aggressive and usually only seen when correcting badly slotted zones or introducing golden-zone assignments for the fastest movers.
What does savings per pick tell me? It is total savings divided by picks rerouted. Here $1,704 / 4,000 = $0.426 per pick, which lets you compare this initiative against other labor projects on a normalized, per-transaction basis.
Travel time savings vs. slotting ROI, which should I use? Use Travel Time Savings to size the annual or per-wave labor benefit; use Slotting ROI when you need payback period and multi-year net value against the full investment.

Last reviewed 2026-05-12.