What Is Catch Weight?
Catch weight (also called variable or random weight) is a way of managing products whose weight differs from unit to unit. Items are counted in one unit, such as cases or pieces, and priced by their actual weight, which is recorded when the item is weighed during receiving, picking, or packing.
Key Catch Weight Terms
Every catch weight item carries two units of measure and a few settings that control how weight is recorded:
| Term | What It Means |
|---|---|
| Primary Unit | How the item is counted and stocked, such as case, piece, or box. |
| Pricing Unit | How the item is priced, usually pound (LB) or kilogram (KG). |
| Nominal Weight | The standard or expected weight of one unit, used for quotes, orders, and planning. |
| Actual Weight | The weight measured on the scale for the specific units shipped or received. |
| Weight Tolerance | The acceptable range around nominal weight. Units outside it are flagged for review. |
| Weight Variance | The difference between nominal and actual weight, which changes the invoice and the cost. |
| Lot Number | The batch the units came from. Catch weight items are often lot tracked as well. |
How Catch Weight Works
- 1Set up the item with two units. Define the primary unit, the pricing unit, the nominal weight, and the weight tolerance.
- 2Quote and order by count. Customers order cases or pieces. The order shows an estimated total based on nominal weight.
- 3Capture weight at receiving. Record the actual weight of each case received on the purchase order, so you pay the supplier for what arrived.
- 4Capture weight at picking or packing. Weigh each unit or scan its barcode as it is picked, and record the weight on the order line.
- 5Invoice by actual weight. The invoice multiplies the actual weight shipped by the price per pound in order management.
- 6Update inventory in both units. Stock is reduced by count and by weight, and cost is updated in accounting from the actual weight.
Catch Weight Example
A food distributor sells boneless ribeye in cases with a nominal weight of 12 lb, priced at $9.50 per pound. A restaurant orders 5 cases, so the order is quoted at $570.00 for 60 lb. At packing, each case is weighed:
| Case | Lot No. | Nominal (LB) | Actual (LB) | Variance | Amount |
|---|---|---|---|---|---|
| Case 1 | RIB-0918 | 12.0 | 11.8 | −0.2 | $112.10 |
| Case 2 | RIB-0918 | 12.0 | 12.4 | +0.4 | $117.80 |
| Case 3 | RIB-0918 | 12.0 | 12.1 | +0.1 | $114.95 |
| Case 4 | RIB-0918 | 12.0 | 11.6 | −0.4 | $110.20 |
| Case 5 | RIB-0918 | 12.0 | 12.3 | +0.3 | $116.85 |
| Total, 5 cases | 60.0 | 60.2 | +0.2 | $571.90 |
The invoice bills $571.90 for the 60.2 lb actually shipped, not the $570.00 quote. Inventory drops by 5 cases and 60.2 lb, and lot RIB-0918 records which customer received it.
Catch Weight vs. Fixed Weight Items
Most inventory is fixed weight: every unit is the same, so count alone is enough. Catch weight items need both.
| Catch Weight | Fixed Weight | |
|---|---|---|
| Weight per Unit | Varies unit to unit | Same for every unit |
| Priced By | Actual weight | Unit count |
| Inventory Units | Two: count and weight | One: count |
| Recorded at Shipping | Count and actual weight | Count only |
| Examples | Meat cuts, seafood, cheese wheels, produce | Canned goods, bottled drinks, packaged snacks |
Benefits of Catch Weight Management
Accurate Invoicing
Customers pay for the exact weight they receive, which reduces disputes and credit memos.
True Inventory Value
Stock is valued by real weight on hand in inventory management, not by an estimate.
Correct Margins
Cost and revenue are both based on actual weight, so gross margin per order is accurate.
Supplier Accountability
Receiving by weight shows whether suppliers delivered what they billed.
Common Catch Weight Mistakes to Avoid
Small weight errors add up quickly across thousands of cases.
Invoicing at Nominal Weight
Billing the expected weight instead of the actual weight gives away product or overcharges customers.
Tracking Only One Unit
Stocking by count alone hides weight shrink. Stocking by weight alone loses track of case counts.
Typing Weights by Hand
Manual entry leads to typos. Connect scales or scan barcodes that carry the weight.
No Weight Tolerance
Without a tolerance range, mislabeled or short-weight cases ship without anyone noticing.
Which Industries Use Catch Weight?
Catch weight is most common wherever products are cut, grown, or portioned by nature rather than by machine:
Food Services
Meat, poultry, seafood, cheese, and produce bought and sold by the pound.
Distribution
Foodservice and grocery distributors shipping variable-weight cases.
Manufacturing
Food processors buying raw material by weight and producing variable-weight goods from a bill of materials.
Nonprofit
Food banks and meal programs tracking donated and distributed food by weight.
Catch Weight in Kechie ERP
,Kechie Inventory Management tracks catch weight items by count and actual weight on every receipt, transfer, pick, and shipment. Weights flow to order management for invoicing, to procurement for supplier matching, and to accounting for cost. Related features include lot tracking for traceability and MRP for material planning.
Frequently Asked Questions
What is catch weight in simple terms?
Catch weight means an item is counted one way and priced by its actual weight. A case of chicken is ordered as one case, but the invoice charges for the exact pounds in that case.
Why is it called catch weight?
The actual weight is "caught" at the moment the item is weighed, usually during receiving, picking, or packing, and recorded on the transaction.
What is nominal weight?
Nominal weight is the standard or expected weight of one unit, such as 12 lb per case. It is used for quoting, ordering, and planning until the actual weight is known.
Is catch weight the same as variable weight?
Yes. Catch weight, variable weight, and random weight all describe products whose weight differs from unit to unit and is priced by actual weight.
How is catch weight priced?
Most catch weight items have a price per pound or kilogram. The line total is the actual weight multiplied by that price, not the count multiplied by a unit price.
How is the actual weight captured?
Warehouse staff weigh items on a scale or scan GS1-128 barcodes that encode the net weight. The weight is then recorded against the order line, and often the lot.
Can basic inventory software handle catch weight?
Most basic accounting and inventory tools track one unit of measure per item, so catch weight needs manual workarounds. ERP systems built for food and distribution track count and weight together.
Does catch weight work with lot tracking?
Yes. Meat, seafood, and dairy are often tracked by lot and by weight, so each lot records its count, its total weight, and where it shipped.
Related Guides
See Catch Weight in Kechie ERP
Track count and actual weight, invoice by the pound, and trace every lot in one cloud platform.