Bag weight & cost
Polybags are sold by the kilo. You use them by the piece.
That one conversion causes more confusion in this trade than anything else. Enter your size and thickness, put in whatever rate you have been quoted — ours or anyone's — and see what a bag actually costs you.
Your bag
Enter the specification
We quote per kilogram. Put our number — or anyone's — in here and the tool converts it to a price per bag.
The bag
- Weight per bag
- 7.16 g
- Bags per kilogram
- 140
- Kilograms per 1,000 bags
- 7.16 kg
- Thickness in gauge
- 200 gauge
Your order
- Film for 10,000 bags
- 71.6 kg
- Cost per bag
- ₹1.07
- Order value
- ₹10,736.11
Indicative only — it uses the rate you typed, not ours. For a real quote, send us the specification.
Next step
Know your spec? Get a real rate.
Send us the size, micron and quantity you just worked out and we will quote against it — usually the same day.
How this works
Weight is calculated as kg per 1,000 bags = width (cm) × length (cm) × micron × 0.0001849, the standard metric trade formula. The constant encodes a film density of 0.9245 g/cm³ — two layers of film, micron converted to centimetres, across a thousand bags. A gusset adds its full depth to the effective width, because that material has to come from somewhere.
The imperial rule of thumb — width (in) × length (in) × gauge ÷ 3300 — gives an answer about 1.6% heavier. Both are used in the trade; we use the metric one because it is the more conservative of the two for a buyer.
Worked example: a 10" × 12" bag at 50 micron weighs 7.16 g, which is about 140 bags per kilogram. At ₹150/kg that is ₹1.07 a bag.