Dock Door Ratio Calculator

Dock door ratio determines logistics throughput — e-commerce needs far more doors than warehousing.

Total sqft

Dock doors

Drive-in doors

Daily inbound trailers

Daily outbound trailers

Target sqft / door

Actual sqft / door

4,762

Daily trailers / door

1.19

Door gap vs target

-4

How the math works

Actual sqft/door = total sqft ÷ total doors. Target compares to distribution benchmark.

400k / 84 = 4,762 sqft/door (good for distribution). Target 80 doors at 5k/door, actual 84 — surplus 4.

How to Use

Enter total sqft.
Enter dock doors count.
Enter drive-in doors count.
Enter daily inbound trailers.
Enter daily outbound trailers.
Enter use case (distribution/warehouse/manufacturing).
Read door ratio vs market benchmark.

Frequently Asked Questions

Dock door benchmarks?

Traditional warehouse: 1 door per 10,000-20,000 sqft. Distribution: 1 per 3,500-7,000 sqft. E-commerce fulfillment: 1 per 1,500-3,500 sqft. Last-mile delivery: 1 per 800-2,000 sqft. 500k sqft distribution: 70-140 doors. Modern logistics facility: doors on 2-3 sides (cross-dock layout) for throughput optimization. Legacy warehouses: single-side loading = major constraint.

Drive-in vs dock doors?

Dock (elevated): truck backs into loading bay, trailer height matches dock (48-54 in). Used for semi-trucks, box trucks. Drive-in (ground-level): ramp or ground-level opening. Used for forklifts, small trucks. Traditional warehouse: 80% dock, 20% drive-in. Distribution: 95%+ dock. Manufacturing: 50-70% dock, 30-50% drive-in. Last-mile: mixed dock + drive-in for van loading.

Cross-dock layout?

Rectangle building with doors on long sides: trailers in on one side, out on the other. Eliminates storage — product flows through in 1-4 hours. Tent-pole of Amazon, Walmart, Target distribution. Cross-dock facility: 80-200k sqft, 40-80 doors. Rent premium 15-30% over traditional warehouse. Operating efficiency drives tenant willingness to pay.

Door spacing requirement?

Standard dock door spacing: 12-14 ft on center. Trailer courts (46 ft long trailer + 50-60 ft maneuvering): 120-140 ft truck court depth. 14-ft door spacing: can accommodate 55-60 ft wide trailer + maneuvering. Modern builds: 130-155 ft truck court (space for 60-65 ft trailers). Narrower courts = tighter operations but reduced capex. Wider courts = premium but less door count per perimeter.