How to Size a Forklift Fleet: A Calculator-Style Guide

Sizing a forklift fleet is not about copying another warehouse's truck count. It is about matching equipment capacity to daily moves, peak volume, shift length, charging/fueling reality, aisle layout, and downtime tolerance. Too few trucks create dock congestion. Too many trucks tie up capital and floor space.

Use this as a calculator-style article before comparing current used options at /inventory. If your operation needs narrow-aisle storage, compare units like the Bendi B40 Landoll or Raymond 752R45TT reach truck. If picking is the bottleneck, look at order picker options like the Maryland order picker lot.

Step 1: Count The Work

Start with the work, not the trucks.

Capture:

• inbound pallets per day
• outbound pallets per day
• internal replenishment moves
• pick-face restocking trips
• trailer loading/unloading cycles
• long travel moves across the building
• peak-hour volume

If you move 300 pallets per day, the question is not simply "how many forklifts?" The question is when those moves happen. A warehouse moving 300 pallets evenly across 10 hours feels very different from one moving 180 pallets during a three-hour shipping window.

Step 2: Estimate Move Time

For each workflow, estimate average minutes per move. Include travel, staging, scan/paperwork time, lift/lower time, dock waiting, and battery or fuel interruptions.

Example:

• 400 daily moves
• 4 minutes average per move
• 1,600 forklift minutes
• 26.7 operating hours

If the warehouse runs one 8-hour shift, one truck cannot cover that work. If it runs two shifts with separated peaks, the answer changes.

Step 3: Divide By Available Productive Time

Forklifts are not productive every minute of a shift. Operators take breaks. Trucks charge or refuel. Traffic blocks aisles. Loads are not always ready. A simple planning assumption is to compare required operating hours against realistic available hours, then add a buffer.

If you need 26.7 operating hours and each truck provides 6.5 productive hours in an 8-hour shift, the baseline is about 4.1 trucks. That means four trucks may be tight and five may be safer, depending on peak timing.

Step 4: Separate Truck Types

A common fleet-sizing mistake is assuming all forklift hours are interchangeable. Dock work, narrow-aisle replenishment, high-level picking, and outdoor yard movement may require different equipment.

One counterbalance forklift may be useful at the dock but inefficient in narrow rack aisles. A reach truck may be ideal for storage but not the right tool for rough outdoor surfaces. An order picker can solve piece-picking flow but will not replace a pallet-moving dock truck.

Step 5: Add Downtime And Charging Coverage

Electric fleets need charging reality built into the plan. Ask whether trucks run through lunch, whether batteries can opportunity charge, whether chargers are included, and whether one truck being down creates a shipping problem.

Propane and diesel units avoid battery-charging time but introduce fuel storage, ventilation, emissions, and maintenance considerations. The right fleet size depends on both equipment class and support habits.

Downloadable Spreadsheet Structure

Create a simple spreadsheet with these columns:

• workflow
• daily moves
• average minutes per move
• total minutes
• shift window
• truck type
• productive hours per truck
• baseline trucks needed
• peak buffer
• recommended units

David can use the same inputs to help decide whether a used forklift, reach truck, order picker, or mixed fleet makes sense.

FAQ

What is the simplest way to size a forklift fleet?

Start with daily pallet moves, average move time, shift hours, and peak demand. Then add downtime and charging or fueling coverage.

Can one forklift handle a whole warehouse?

Sometimes, but only if receiving, storage, picking, and shipping do not compete for the same truck at the same time.

Should I buy extra forklifts for peak season?

If seasonal volume creates dock delays or replenishment bottlenecks, adding used capacity can be cheaper than overtime, rentals, or missed shipments.