Product giveaway is the product you put into a pack above its declared net weight and never get paid for. A few grams a pack looks harmless, but multiplied by every pack a line fills in a year it is often lakhs, sometimes crores, of rupees. This calculator puts that number in rupees so you can decide whether a tighter filler, a checkweigher feedback loop or a lower target weight is worth the money.
How the calculator works
The calculator multiplies four numbers you already have:
Giveaway per day (₹) = packs filled per day × grams over declared weight ÷ 1,000 × product cost (₹/kg)
Giveaway per year (₹) = giveaway per day × working days a year
The inputs:
- Packs filled per day. Everything that leaves the filler for sale in a day, across all lines running this SKU. Use the real count, not rated machine speed.
- Grams over declared weight. The average overfill per pack: measured average pack weight minus declared net weight. Take it from checkweigher logs or by weighing 50–100 packs on a balance (net of packaging). Not the filler setting: that is what you asked for, not what came out.
- Product cost (₹/kg). What one kilo of the product in the pack costs you: raw material plus processing already spent on it (frying, roasting, blending). Leave out the packaging film, which you use whatever the fill weight.
- Working days a year. Days the line actually fills this product.
The result shows three figures: given away per day, per year for each 1 g of overfill (the yearly total divided by the grams you entered, which tells you what shaving a single gram is worth) and per year in total. Amounts are shown in lakh or crore.
Worked example (India)
A namkeen plant packing 200 g pouches on two vertical form-fill-seal lines. All inputs are assumptions for illustration. Replace them with your own.
| Input / result | Value | Note |
|---|---|---|
| Packs filled per day | 40,000 | Assumption: 2 lines × ~20,000 pouches/day |
| Declared net weight | 200 g | Assumption |
| Measured average net weight | 204 g | Assumption, from a 100-pack sample |
| Grams over declared weight | 4 g | 204 − 200 |
| Product cost | ₹220/kg | Assumption: loaded cost of fried namkeen |
| Working days a year | 300 | Assumption |
| Given away per day | ₹35,200 | 40,000 × 4 ÷ 1,000 × 220 |
| Per year per 1 g of overfill | ₹26.40 lakh | 40,000 × 1 ÷ 1,000 × 220 × 300 |
| Given away per year | ₹1.06 crore | ₹35,200 × 300 |
Each pouch carries only ₹0.88 of free product, but over a year that adds up to about ₹1.06 crore. Bringing the average down from 204 g to 202 g would recover roughly ₹53 lakh a year, provided your filler's spread lets you do that legally (see below).
What typical numbers look like
No credible public study gives an "average giveaway" for Indian food packers. Vendor-brochure figures are marketing, not benchmarks. What can be sourced is the legal frame that decides how low your overfill can go:
- The international model rule is "average at least equal to the declared quantity". OIML R 87 (2016), clause 3.2 says the average actual quantity in prepackages "shall be at least equal to the nominal quantity". No more than 2.5% of packs may be short by more than the tolerable deficiency (T), and no pack may be short by more than 2T.
- The tolerable deficiency for food-sized packs is a few grams. The same OIML R 87 Table 1 sets T at 4.5% for 50–100 g, 9 g for 200–300 g, 3% for 300–500 g, 15 g for 500 g–1 kg and 1.5% for 1–10 kg.
- The UK writes the same three rules into law. Regulation 4 of the Weights and Measures (Packaged Goods) Regulations 2006 requires contents "not less on average than the nominal quantity" and no package short by more than twice the tolerable negative error.
- India: check the primary text yourself. Net quantity on pre-packed goods in India falls under the Legal Metrology Act, 2009 and the Legal Metrology (Packaged Commodities) Rules, 2011. We could not open the current official Schedule of permissible errors from the Department of Consumer Affairs while writing this page, so we do not quote Indian tolerance figures here. Do not assume they match OIML. Get the current Schedule from consumeraffairs.nic.in or your legal-metrology consultant before you lower any fill target.
- What the rules imply mathematically (our arithmetic, not a source): under an average-based rule, the gap you must keep above declared weight depends on the spread of your filler, not a fixed number. Halve the standard deviation of pack weight and you can lower the target mean while keeping the same share of light packs.
What this number does not tell you
- It is only as good as the overfill figure. If "grams over" comes from the machine setting instead of weighed packs, the result is a guess. Overfill also drifts by shift, by operator and with product density (granule size, moisture, temperature).
- It does not tell you how far you can safely cut. The legal floor and your filler's spread decide that, not the calculator. Getting to zero overfill is neither realistic nor legal on most lines.
- It ignores knock-on effects. Lowering the target can raise checkweigher rejects, rework and stoppages. Those cost line time, which this calculator does not count.
- It counts one SKU at one cost. Run it per SKU. High-value products (ghee, dry fruits, milk powder) lose far more per gram than flour or sugar.
Related guides
- Product Giveaway in Indian Food Packing: What 1 Gram Costs in ₹
- SKU Changeover on Indian Packing Lines: Where the Hours Go
- Shift Handovers and Breaks on a Food Packing Line: Where 40 Minutes a Shift Go
- Sanitation-Adjusted OEE for Indian Food Lines
- Festive Peak Without a Third Shift: Will Your Food Line Keep Up?
FAQ
How do you calculate product giveaway cost? Multiply average overfill per pack (in grams) by packs filled, divide by 1,000 to get kilos, then multiply by the product's cost per kilo. Example: 40,000 packs × 4 g ÷ 1,000 × ₹220/kg = ₹35,200 a day. Multiply by working days for the yearly cost.
What is a good overfill target for food packs? There is no universal number. The lowest safe target is the declared weight plus a margin that depends on how much your filler's pack weights vary. A tighter filler needs a smaller margin. Set the target from your measured standard deviation and the current legal-metrology rules, not from habit.
How do I measure overfill on my packing line? Weigh 50–100 packs per SKU, net of packaging, and compare the average with the declared weight. Better: checkweigher logs across whole shifts.
Is it legal to fill slightly below the declared weight in India? Indian law (Legal Metrology Act, 2009 and the Packaged Commodities Rules, 2011) allows a limited permissible error on net quantity, but systematic short-filling is an offence. The exact bands sit in a Schedule that has been amended, so confirm the current text with the Department of Consumer Affairs before relying on any figure.
How much can a checkweigher with filler feedback save? It depends on how far your current average sits above what your filler's spread requires. Put your current overfill into this calculator, then the overfill you expect after tightening. The difference is the yearly ceiling on savings. Compare that with the equipment cost.
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