Flatbed tarp sizes can feel like algebra at a truck stop—until you know the formula. Pick a tarp that’s too short and storm water finds its way in; pick one that’s too long and you’ll wrestle vinyl at 2 a.m. Use our calculator below to get your perfect tarp size in 60 seconds, or check the size chart for common options.
FLATBED TARPSIZE CALCULATOR
Enter your load dimensions and we’ll recommend the ideal tarp category & size.
Enter the length of your load in feet, between 4 and 53.
Enter the height of your load in feet, between 1 and 14.
Enter the side overhang in inches, between 0 and 24.
- Width = trailer 8.5 ft + (height × 2) + overhang
- Length = load length + 2 ft slack
If no single tarp fits, we suggest twin 24×27 lumber tarps or a specialty cover.
Quick‑Look Flatbed Tarp Size Chart
| Load Type | Height | Best Size | Drop | Wt (18 oz) |
|---|---|---|---|---|
| Steel coils / plate | ≤4 ft | 16 × 20 ft | 4 ft | ≈ 65 lb |
| Plywood / wallboard | ≤6 ft | 20 × 27 ft | 6 ft | ≈ 81 lb |
| Lumber / wallboard | ≤8 ft | 24 × 27 ft | 8 ft | ≈ 110 lb |
| Machinery (tall) | ≤10 ft | 30 × 30 ft | 10 ft | ≈ 155 lb |
Why Tarps4Less Built This Tool
As North America’s trusted flatbed tarp supplier, Tarps4Less heard one complaint again and again: “I’m not sure which tarp size I need for this load.” This interactive calculator eliminates the guesswork, speeds up load securement, and helps drivers stay DOT‑compliant with the right steel tarps, lumber tarps, machinery tarps, and lightweight vinyl tarps every time. It’s part of our mission to deliver fast‑shipping, affordable truck tarps that protect freight and boost your bottom line.
Frequently Asked Questions
Is trailer width factored in?
Yes—standard flatbed width (8 ft 6 in) is included.
What if my load is wider?
Use widest point as height; the tool automatically upsizes drop.
Do you list finish size?
All Tarps4Less dimensions are finish size.
Lightweight option?
Check our lightweight tarp collection for options under 18 oz.
Need help? Contact Tarps4Less at customerservice@tarps4less.com or call (877) 874-5377.
