12 Mil. Poly Tarp Weights
12 Mil Poly Tarp Weight Chart
Knowing the weight of a 12 mil poly tarp is useful when planning for shipping, handling, storage, freight, job-site lifting, and installation.
This guide provides estimated tarp weights based on 6 oz per square yard polyethylene fabric and includes both fabric-only weight and estimated finished weight.
How 12 Mil Poly Tarp Weights Are Calculated
All weights shown below are calculated using a standard 6 oz per square yard fabric weight. Finished tarp weight is estimated by adding approximately 15% for hems, seams, grommets, reinforced edges, corner patches, and other finishing details.
Fabric Weight
6 oz per square yard is used as the base material weight for these 12 mil poly tarp estimates.
Area Conversion
One square yard equals 9 square feet. Tarp area is calculated using length × width.
Finished Weight
Finished weights include an estimated 15% added weight for hems, grommets, seams, and reinforcement.
12 Mil Poly Tarp Weight Chart by Size
Small Sizes
| Size (ft) | Area (sq ft) | Fabric Weight (lb) | Est. Finished Weight (lb) |
|---|---|---|---|
| 5 × 7 | 35 | 1.46 | 1.68 |
| 6 × 8 | 48 | 2.00 | 2.30 |
| 6 × 10 | 60 | 2.50 | 2.88 |
| 6 × 12 | 72 | 3.00 | 3.45 |
| 6 × 16 | 96 | 4.00 | 4.60 |
| 6 × 20 | 120 | 5.00 | 5.75 |
| 6 × 30 | 180 | 7.50 | 8.62 |
| 7 × 10 | 70 | 2.92 | 3.35 |
| 7 × 12 | 84 | 3.50 | 4.02 |
| 7 × 16 | 112 | 4.67 | 5.37 |
| 7 × 20 | 140 | 5.83 | 6.71 |
| 7 × 30 | 210 | 8.75 | 10.06 |
| 7 × 40 | 280 | 11.67 | 13.42 |
| 8 × 8 | 64 | 2.67 | 3.07 |
| 8 × 10 | 80 | 3.33 | 3.83 |
| 8 × 12 | 96 | 4.00 | 4.60 |
| 8 × 16 | 128 | 5.33 | 6.13 |
| 8 × 20 | 160 | 6.67 | 7.67 |
| 8 × 30 | 240 | 10.00 | 11.50 |
| 8 × 40 | 320 | 13.33 | 15.33 |
| 9 × 12 | 108 | 4.50 | 5.17 |
| 12 × 20 | 240 | 10.00 | 11.50 |
Medium Sizes
| Size (ft) | Area (sq ft) | Fabric Weight (lb) | Est. Finished Weight (lb) |
|---|---|---|---|
| 20 × 50 | 1000 | 41.67 | 47.92 |
| 22 × 30 | 660 | 27.50 | 31.62 |
| 24 × 24 | 576 | 24.00 | 27.60 |
| 24 × 30 | 720 | 30.00 | 34.50 |
| 24 × 36 | 864 | 36.00 | 41.40 |
| 24 × 40 | 960 | 40.00 | 46.00 |
| 25 × 33 | 825 | 34.38 | 39.53 |
| 26 × 40 | 1040 | 43.33 | 49.83 |
| 28 × 48 | 1344 | 56.00 | 64.40 |
| 30 × 30 | 900 | 37.50 | 43.12 |
| 30 × 38 | 1140 | 47.50 | 54.62 |
| 30 × 40 | 1200 | 50.00 | 57.50 |
| 30 × 50 | 1500 | 62.50 | 71.88 |
| 30 × 60 | 1800 | 75.00 | 86.25 |
| 33 × 48 | 1584 | 66.00 | 75.90 |
| 36 × 40 | 1440 | 60.00 | 69.00 |
| 36 × 50 | 1800 | 75.00 | 86.25 |
| 36 × 60 | 2160 | 90.00 | 103.50 |
| 38 × 40 | 1520 | 63.33 | 72.83 |
| 40 × 40 | 1600 | 66.67 | 76.67 |
| 40 × 50 | 2000 | 83.33 | 95.83 |
| 40 × 60 | 2400 | 100.00 | 115.00 |
Large / Oversize Tarps
| Size (ft) | Area (sq ft) | Fabric Weight (lb) | Est. Finished Weight (lb) |
|---|---|---|---|
| 30 × 100 | 3000 | 125.00 | 143.75 |
| 50 × 50 | 2500 | 104.17 | 119.79 |
| 50 × 100 | 5000 | 208.33 | 239.58 |
| 60 × 60 | 3600 | 150.00 | 172.50 |
| 60 × 100 | 6000 | 250.00 | 287.50 |
| 80 × 80 | 6400 | 266.67 | 306.67 |
When to Use a 12 Mil Poly Tarp
12 mil poly tarps are considered heavy-duty tarps and are commonly used for:
Construction Sites
Cover building materials, tools, jobsite supplies, and temporary work areas.
Equipment Covers
Protect machinery, vehicles, agricultural equipment, and outdoor storage items.
Storm Protection
Use for temporary roofing, emergency coverage, and short-term weather protection.
Industrial Storage
Useful for agricultural, warehouse, commercial, and long-term outdoor coverage.
Need a Different Tarp Thickness?
If you need lighter or heavier tarp options, compare materials, thickness ratings, and recommended uses before choosing your cover.
Read the Tarp Thickness Guide →Frequently Asked Questions About 12 Mil Tarp Weights
How much does a 12 mil poly tarp weigh?
The weight depends on the tarp size. A small 6 × 12 tarp weighs about 3.45 lb finished, while large industrial sizes can exceed 200 lb.
Why is the finished tarp heavier than the fabric weight?
Finished tarps include reinforced hems, seams, grommets, and corner patches, which add weight beyond the raw fabric material.
Are these tarp weights exact?
The weights listed are estimates based on 6 oz per square yard fabric. Actual weights may vary slightly depending on manufacturing tolerances and reinforcement details.
Additional sizing and material guidance is available in our Tarp & Canopy Buying Guides.
Not sure which tarp material is best for your project? See our Tarp Material Comparison Guide to compare poly, vinyl, canvas, mesh, and clear tarps.