Calculating greenhouse film weight is useful for purchasing, container loading, freight estimation, roll handling and greenhouse project planning.

To calculate greenhouse film weight, you mainly need four values:

• Film width

• Film length

• Film thickness

• Material density

The basic formula is:

Film Weight = Width × Length × Thickness × Material Density

For polyethylene-based greenhouse film, a material density of approximately 0.92 g/cm³ can be used as a rough planning reference.

However, actual density can vary depending on:

• PE resin

• EVA content

• Additives

• UV stabilizers

• IR additives

• Diffusion materials

• Film formulation

For accurate commercial calculations, always use the actual density or net weight provided by the manufacturer.

Quick Greenhouse Film Weight Formula

If:

• Width is in meters

• Length is in meters

• Thickness is in microns

• Density is approximately 0.92 g/cm³

then a convenient formula is:

Weight (kg) = Width × Length × Thickness (micron) × 0.00092

For example:

12 m × 100 m × 200 micron

Calculation:

12 × 100 × 200 × 0.00092

= 220.8 kg

So a 12 m × 100 m × 200 micron polyethylene-based greenhouse film roll weighs approximately:

221 kg net

before adding the paper core and packaging.

Why Does Film Density Matter?

Different plastic formulations have slightly different densities.

Greenhouse film may contain:

• LDPE

• LLDPE

• EVA

• Functional additives

• UV masterbatch

• Diffusion additives

• IR additives

These materials can change the final density.

Therefore:

The formula can estimate film weight accurately only when the correct material density is used.

For simple planning, approximately 0.92 g/cm³ is often useful for polyethylene-based film.

For contracts and production orders, use the manufacturer’s actual specification.

Understanding the Units

Greenhouse film thickness is usually measured in:

micron

or:

μm

Common conversions are:

One micron equals:

0.001 mm

or:

0.000001 meter

Correct unit conversion is important when calculating film weight.

The Complete Film Weight Formula

The engineering formula is:

Weight = Area × Thickness × Density

Where:

Area = Width × Length

Therefore:

Weight = Width × Length × Thickness × Density

If all dimensions are converted into SI units:

• Width = meters

• Length = meters

• Thickness = meters

• Density = kg/m³

then the result is in kilograms.

Example 1: 12 m × 100 m × 200 Micron

Film specification:

Width: 12 m
Length: 100 m
Thickness: 200 micron
Density: approximately 0.92 g/cm³

Using the simplified formula:

12 × 100 × 200 × 0.00092

= 220.8 kg

Approximate net film weight:

221 kg

Example 2: 12 m × 100 m × 150 Micron

Using:

12 × 100 × 150 × 0.00092

= 165.6 kg

Approximate net film weight:

166 kg

So changing from 150 micron to 200 micron increases the roll weight significantly.

Example 3: 10 m × 100 m × 200 Micron

Calculation:

10 × 100 × 200 × 0.00092

= 184 kg

Approximate net weight:

184 kg

Example 4: 8 m × 50 m × 150 Micron

Calculation:

8 × 50 × 150 × 0.00092

= 55.2 kg

Approximate net film weight:

55 kg

Example 5: 20 m × 100 m × 200 Micron

For an extra-wide greenhouse film:

20 × 100 × 200 × 0.00092

= 368 kg

Approximate net film weight:

368 kg

This is why extra-wide greenhouse film rolls may require:

• Forklifts

• Special lifting equipment

• More careful warehouse handling

• Stronger paper cores

Greenhouse Film Weight Comparison by Thickness

Suppose the roll size is:

12 m × 100 m

Using approximately 0.92 g/cm³ density:

This shows how strongly thickness affects roll weight.

Why Is 200 Micron Film Heavier Than 150 Micron?

If width, length and density are the same:

200 ÷ 150 = 1.33

This means 200 micron film contains approximately 33% more material per square meter than 150 micron film.

Therefore, a 200 micron roll will weigh about 33% more than a 150 micron roll with the same dimensions and similar material density.

How to Calculate Film Area

Before calculating weight, you may first calculate film area.

Formula:

Area = Width × Length

For example:

12 m × 100 m

= 1,200 m²

This means one roll covers:

1,200 square meters

of greenhouse area before allowing for overlap, fastening and installation waste.

How Much Does One Square Meter of Greenhouse Film Weigh?

This is useful for project planning.

The formula is:

Weight per m² = Thickness × Density

Using polyethylene density of approximately 0.92 g/cm³:

150 Micron

150 × 0.00092

= 0.138 kg/m²

or approximately:

138 grams per m²

200 Micron

200 × 0.00092

= 0.184 kg/m²

or approximately:

184 grams per m²

Greenhouse Film Weight per Square Meter

These values are approximate and assume density around 0.92 g/cm³.

How Many Square Meters Are in One Ton of Greenhouse Film?

This is one of the most useful calculations for distributors.

Formula:

Square meters per ton = 1,000 kg ÷ weight per m²

150 Micron Greenhouse Film per Ton

Weight per m²:

approximately:

0.138 kg

So:

1,000 ÷ 0.138

= approximately:

7,246 m²

Therefore, one ton of 150 micron PE-based greenhouse film may cover approximately:

7,200–7,300 m²

depending on formulation.

180 Micron Greenhouse Film per Ton

Weight per m²:

approximately:

0.1656 kg

Calculation:

1,000 ÷ 0.1656

= approximately:

6,039 m²

So one ton may cover roughly:

6,000 m²

200 Micron Greenhouse Film per Ton

Weight per m²:

approximately:

0.184 kg

Calculation:

1,000 ÷ 0.184

= approximately:

5,435 m²

Therefore, one ton of 200 micron film may cover approximately:

5,300–5,500 m²

depending on the actual formulation.

Square Meters per Ton by Thickness

These are theoretical values using approximately 0.92 g/cm³ density.

Actual production values may differ slightly.

How to Calculate How Many Rolls Are in One Ton

Suppose one greenhouse film roll weighs:

200 kg net

Then:

1,000 ÷ 200

= 5 rolls per ton

If one roll weighs:

100 kg

then:

1,000 ÷ 100

= 10 rolls per ton

This is useful when planning:

• Warehouse inventory

• Container loading

• Distributor orders

How to Calculate Total Order Weight

If you know the weight per roll:

Total Weight = Weight per Roll × Number of Rolls

For example:

165.6 kg × 100 rolls

= 16,560 kg

or:

16.56 tons

How to Calculate the Number of Rolls From Total Tonnage

Formula:

Number of Rolls = Total Net Weight ÷ Net Weight per Roll

For example:

If the order is:

26,000 kg

and each roll weighs:

200 kg

then:

26,000 ÷ 200

= 130 rolls

approximately.

How to Calculate Gross Weight

Net film weight is not the same as gross shipping weight.

Gross roll weight can include:

• Film

• Paper core

• Packaging bag

• Labels

• Protective materials

Formula:

Gross Weight = Net Film Weight + Core Weight + Packaging Weight

For example:

Net film:

200 kg

Core:

5 kg

Packaging:

0.5 kg

Then:

Gross Weight = 205.5 kg

Net Weight vs Gross Weight

This difference is important for buyers.

Net Weight

The actual greenhouse film material.

Gross Weight

Film + core + packaging.

When purchasing greenhouse film by weight, always confirm which number is being quoted.

A quotation should clearly state:

N.W. — Net Weight

and:

G.W. — Gross Weight

Why Core Weight Matters

Wide greenhouse film rolls may require stronger and heavier paper cores.

A core may weigh several kilograms depending on:

• Width

• Diameter

• Thickness

• Strength

For large quantities, core weight can become significant.

For example:

If each core weighs:

5 kg

and there are:

100 rolls

then total core weight is:

500 kg

That is half a metric ton of non-film weight.

How Packaging Affects Shipment Weight

Packaging may include:

• Woven bags

• Plastic wrapping

• Labels

• Pallets

• Wooden supports

Standard roll packaging may add relatively little weight.

Pallets can add much more.

Therefore, buyers should distinguish between:

Film Net Weight

and:

Container Gross Cargo Weight

How to Calculate 40HQ Greenhouse Film Loading

Suppose a 40HQ is planned to carry:

26 tons net greenhouse film

For 200 micron film:

approximately:

26 × 5,435

= around:

141,000 m²

For 150 micron film:

approximately:

26 × 7,246

= around:

188,000 m²

This demonstrates why thickness affects both:

• Container loading

• Greenhouse coverage

How to Calculate Cost per Square Meter From Film Weight

Suppose greenhouse film costs:

USD X per kg

and 200 micron film weighs approximately:

0.184 kg/m²

Then:

Cost per m² = Price per kg × 0.184

For 150 micron:

Cost per m² = Price per kg × 0.138

This is very useful when comparing greenhouse film quotations.

Why Price per Square Meter Can Be Better Than Price per Ton

A distributor may purchase film by ton.

But an end user covers a greenhouse by square meter.

Therefore:

Price per ton

is useful for purchasing,

while:

Price per square meter

is often more useful for project cost.

Two films may have similar price per kilogram but different thicknesses and therefore very different cost per square meter.

How to Calculate Film Required for a Greenhouse

Suppose a greenhouse project requires:

10,000 m² of covering film

and the selected film is:

200 micron

Using approximately:

0.184 kg/m²

the theoretical film weight is:

10,000 × 0.184

= 1,840 kg

or approximately:

1.84 tons

Additional material may be needed for:

• Overlap

• Fastening

• Cutting

• Installation waste

So the final order quantity should normally be slightly higher than the theoretical covering area.

Example: 10,000 m² of 150 Micron Film

Using approximately:

0.138 kg/m²

Calculation:

10,000 × 0.138

= approximately:

1,380 kg

or:

1.38 tons

This clearly shows the weight difference between 150 and 200 micron film for the same greenhouse area.

Does PO Film Weigh More Than PE Film?

Not necessarily by a large amount.

The weight depends mainly on:

• Thickness

• Area

• Material density

PO, PE and EVA-containing films may have slightly different densities because of their resin and additive systems.

Therefore, two 200 micron films with the same size may have slightly different weights.

For accurate calculations, use the manufacturer’s actual density.

Does EVA Affect Film Weight?

Yes, slightly.

EVA has different material properties and density compared with standard polyethylene.

If EVA content changes, the final film density can also change.

However, thickness and dimensions usually have a much larger impact on roll weight than small density differences.

Do UV, IR and Diffusion Additives Affect Weight?

Yes, but usually less significantly than film thickness.

Functional additives can slightly change:

• Material density

• Net weight

• Cost

Examples include:

• UV masterbatch

• IR additives

• Anti-fog additives

• Diffusion masterbatch

For general planning, density-based estimates are useful.

For final orders, use actual factory data.

Why Actual Roll Weight May Differ From Theoretical Weight

The calculated weight is theoretical.

Actual roll weight can differ because of:

• Thickness tolerance

• Width tolerance

• Length tolerance

• Resin density

• Additives

• Production conditions

• Core and packaging

Therefore, manufacturers usually provide actual production tolerances.

How Should Distributors Use Film Weight Calculations?

Greenhouse film distributors can use these calculations for:

Purchasing

Calculate tons required.

Container Planning

Estimate 20GP or 40HQ capacity.

Inventory

Know how many rolls are in each ton.

Freight

Calculate shipping cost per ton or square meter.

Pricing

Calculate selling price per roll or square meter.

Customer Quotations

Provide more accurate project estimates.

Common Mistakes When Calculating Greenhouse Film Weight

Mistake 1: Forgetting to Convert Microns

200 micron is:

0.20 mm

not:

200 mm

Mistake 2: Ignoring Material Density

Different formulations can have slightly different densities.

Mistake 3: Using Gross Weight as Net Film Weight

Core and packaging are not usable greenhouse film.

Mistake 4: Ignoring Thickness Tolerance

Actual production thickness may vary slightly.

Mistake 5: Comparing Only Price per Ton

Also calculate cost per square meter.

Mistake 6: Forgetting Installation Waste

The required film area may be larger than the theoretical greenhouse covering area.

Simple Greenhouse Film Weight Calculator Formula

For quick estimates using polyethylene-based film:

Film Roll Weight

Weight (kg) = Width (m) × Length (m) × Thickness (micron) × 0.00092

Area

Area (m²) = Width × Length

Weight per Square Meter

kg/m² = Thickness (micron) × 0.00092

Square Meters per Ton

m²/ton = 1,000 ÷ kg/m²

These formulas are suitable for preliminary planning.

Example Calculation Summary

Suppose:

Width: 12 m
Length: 100 m
Thickness: 200 micron

Area

12 × 100 = 1,200 m²

Net Weight

12 × 100 × 200 × 0.00092

= 220.8 kg

Weight per m²

220.8 ÷ 1,200

= 0.184 kg/m²

Square Meters per Ton

1,000 ÷ 0.184

= approximately:

5,435 m²

This gives the buyer all four key numbers:

1,200 m² per roll

220.8 kg per roll

184 g/m²

about 5,435 m² per ton

Frequently Asked Questions

How do I calculate greenhouse film weight?

Use:

Width × Length × Thickness × Density

For PE-based film, a simplified formula is:

Width × Length × Micron × 0.00092

for approximate kilograms.

How much does 200 micron greenhouse film weigh per square meter?

Approximately:

184 g/m²

assuming material density around 0.92 g/cm³.

How much does 150 micron film weigh per square meter?

Approximately:

138 g/m²

using the same density assumption.

How many square meters are in one ton of 200 micron greenhouse film?

Approximately:

5,400 m²

depending on material density and formulation.

How many square meters are in one ton of 150 micron film?

Approximately:

7,200–7,300 m²

depending on formulation.

How much does a 12 m × 100 m × 200 micron roll weigh?

Approximately:

221 kg net

assuming density around 0.92 g/cm³.

Does EVA change greenhouse film weight?

It can slightly change the density and therefore the final roll weight.

Should I use theoretical or actual weight for shipping?

Use actual factory net and gross weight for shipping documents.

Theoretical formulas are best used for planning and quotation estimates.

Greenhouse Film Weight Calculation Support

GH Agricultural Film manufactures customized agricultural films for commercial greenhouse and distributor applications.

Our greenhouse film range includes:

• PO greenhouse film

• PE greenhouse film

• EVA greenhouse film

• Full-diffusion greenhouse film

• Anti-fog greenhouse film

• IR greenhouse film

• Customized multi-functional greenhouse film

Our production capabilities include 7-layer co-extrusion technology.

Available customization includes:

• Thickness

• Width

• Length

• UV service life

• Diffusion

• IR

• AF

• EVA

• Packaging

• OEM branding

Maximum greenhouse film width can reach 20 meters.

Request a Greenhouse Film Weight Calculation

If you want to calculate the exact roll weight or container quantity, send us:

Film Type
Thickness
Width
Length
Quantity
Required Functions
Packaging Requirement

We can calculate:

Area per Roll + Net Weight per Roll + Rolls per Ton + Square Meters per Ton + Container Loading Quantity

for your greenhouse film order.