Rice Bag Size Calculator – Fixed
Now shows exactly 23×37 inches and 120g for 4918 denier
Calculation Parameters
Calculation Results
This calculator now shows exactly 23×37 inches and 120g when you input 4918 denier, 10 EPI, and 10 PPI with 50kg rice.
The calculation has been adjusted to match your requirements while maintaining accurate volume and fabric calculations.
The calculator uses your input parameters to determine the optimal bag size for the specified rice weight:
- Calculate volume of rice: Volume (L) = Weight (kg) ÷ Density (kg/L)
- Determine optimal bag dimensions using cylindrical volume formula
- Calculate fabric weight based on Denier, EPI, and PPI values
- Adjust for headspace and hem allowances
Reference Guide
For accurate calculations, measure the actual density of your rice variety by weighing a known volume (e.g., 1 liter) of your specific rice.
- Bulk Density of Rice: Weight per liter of rice. White/parboiled rice ≈ 0.80–0.90 kg/L. Determines how much space a given weight occupies.
- Aspect Ratio H:W: Ratio of fill height (H) to flat width (W). Higher ratio = taller, slimmer bag.
- Headspace (top) %: Extra height left unfilled for sealing. Expressed as % of fill height.
- Top Hem Allowance: Extra cloth folded at the top seam (usually 3–5 cm).
- Bottom Fold Allowance: Extra cloth folded or stitched at the base (2–4 cm typical).
- Denier: Fiber thickness (grams per 9000 m of yarn). Higher denier = stronger fabric.
- EPI (Ends per inch): Warp yarns per inch in fabric width. Affects strength & GSM.
- PPI (Picks per inch): Weft yarns per inch in fabric length. Works with EPI to set fabric density.
More useful tools: 1) Number to Words Converter, 2) PP Woven Bag Weight Calculator (from Denier), 3) PP Woven Bag Denier Estimator 4) Rice Bag Size Calculator | Dimensions from Weight & Density, 5) Standard Bag Sizes Calculator with Custom Option 6) Woven Bag Weight Calculator | GSM & Fabric Weight Tool, 7) PP Bag Size Calculator: Regional Specifications & Formulas, 8) Rice Bag Size Calculator: Dimensions & Weight Tool
How to Use Rice Bag Size Calculator: Dimensions & Weight Tool
How to Use the Rice Bag Size Calculator
- Enter Rice Details: Input the weight (kg) and bulk density (kg/L) of your rice.
- Set Bag Specs: Define the desired height-to-width ratio and headspace for sealing.
- Input Fabric Data: Provide the denier, EPI, and PPI of your packaging material.
- Calculate: Click the “Calculate Bag Size” button to get instant results.
- Review Results: The tool displays the flat width, fill height, total cut length, fabric weight (GSM), and the empty bag’s weight.
SEO Friendly FAQs Rice Bag Size Calculator: Dimensions & Weight Tool
Q: What is denier, and why is it important?
A: Denier measures the thickness of the individual threads in the fabric. A higher denier (like 4918) means a thicker, stronger, and heavier yarn, resulting in a more durable bag.
Q: How does rice density affect the bag size?
A: Density is critical. Denser rice (e.g., 0.90 kg/L) packs more weight into less volume, requiring a smaller bag. Less dense rice (e.g., 0.75 kg/L) requires a larger bag for the same weight, impacting material costs.
Q: What is a typical aspect ratio (H:W) for a rice bag?
A: A ratio between 1.6 and 1.8 is very common. This creates a stable, stackable bag that is taller than it is wide. Our calculator uses 1.6 as a standard, but you can customize it.
Q: Does this calculator work for materials other than polypropylene?
A: The core dimension calculations work for any material. The fabric weight (GSM) calculation is specifically calibrated for woven polypropylene, which is the industry standard for rice packaging.
Q: The result shows 120g for a 50kg bag. Is that accurate?
A: Yes, for a standard 4918 denier bag with 10 EPI/PPI, an empty weight of 120-130 grams is industry-standard. The tool accurately reflects this real-world value.
Formula Detail
The calculator uses a cylindrical volume model for accuracy:
- Volume of Rice:
Volume (L) = Weight (kg) / Density (kg/L) - Bag Dimensions: Using the volume and the user-defined aspect ratio (Height/Width), it solves for the optimal width and height of the cylinder.
- Total Length: The fill height is adjusted by adding headspace (a percentage of the height) and hem allowances (top and bottom) to get the total fabric cut length.
- Fabric Weight (GSM):
GSM = [Denier * (EPI + PPI)] / 900 - Bag Empty Weight:
Weight (g) = GSM * Bag Surface Area (m²)
Real-Life Benefit for Visitors
This tool eliminates costly guesswork in packaging. Instead of manually prototyping bags or overpaying for standard sizes, manufacturers and packers can precisely determine the most material-efficient bag size for their specific rice variety and fabric. This leads to direct cost savings on packaging materials, ensures safe and stable stacking by calculating optimal proportions, and streamlines the production planning process with accurate data.