| In Marijuana Software (and METRC), weights tell the system how much is in a package and how much each sellable unit weighs. Get these right and pricing, inventory counts, and compliance all line up. |
| Key Definitions |
| Package Weight |
The total weight of the entire package as it exists in METRC — product plus all included materials. Example: a 1.0 g joint + paper + crutch might have a Package Weight of 1.5 g. This total decreases as units are sold or pre-packed. |
| Unit Weight |
The weight of one sellable unit for this item (e.g., 3.5 g per eighth, 1.0 g pre-roll, 0.5 g cart). Used when the product is sold in Units rather than by the scale. |
| Order Quantity |
For pre-packed items, the number of units you’re creating from a bulk package (e.g., 8 units at 3.5 g each). |
| Unit of Measure (UoM) |
Whether the product is sold by Grams (weight-based) or Units (each piece). METRC requires the correct UoM per package. |
| Why This Matters |
| Pricing |
Correct Unit Weight ensures the right price tier applies (eighth, quarter, ounce, etc.) and prevents under/over-charges. |
| Inventory |
Using the correct UoM keeps package depletion accurate and prevents negative inventory. |
| Compliance |
METRC validations (e.g., “valid values are: Each”) depend on matching UoM and weights. |
| Common Scenarios |
| Bulk Flower Jar → Sold by Weight |
• UoM: Grams • Unit Weight: not required You sell directly from the jar by the scale; Package Weight counts down with each sale. |
| Bulk Flower → Pre-Packs (Eighths) |
• Change UoM to Units • Set Unit Weight = 3.5 g • Set Order Quantity to the number of eighths you’re making (e.g., from a 28 g jar → 8 units). Package Weight will reduce by 3.5 g × units created. |
| Pre-Rolls |
• UoM: Units • Unit Weight = grams per roll (e.g., 1.0 g) Ensures METRC receives the correct “Each” sale with a known weight per piece. |
| Cartridges / Edibles |
• UoM: Units • Unit Weight often holds net weight (e.g., 0.5 g oil, 10 mg piece). Follow your state rules for the expected weight/serving declaration. |
| Where Do I See/Edit These? |
| Package Details |
Products → find your item → click the arrow next to the Batch # → Edit Package. • Package Weight is shown on the page. • Change UoM (Grams ↔ Units), set Unit Weight, and set Order Quantity when creating pre-packs. Save to apply. |
| POS Behavior |
• UoM = Grams → sold by scale/weight. • UoM = Units → each scan removes one unit (with the defined Unit Weight). |
| Worked Examples |
| Example A — 1 oz → eighths |
Start: Package Weight = 28.0 g (UoM: Grams). Convert to pre-packs: set UoM = Units, Unit Weight = 3.5 g, Order Quantity = 8. Result: 8 units created, Package Weight –= 28.0 g → 0 g remaining. |
| Example B — 100 × 1 g pre-rolls |
Start with a bulk package of 100 g. Set UoM = Units, Unit Weight = 1.0 g, Order Quantity = 100. Result: 100 units created, Package Weight –= 100 g → 0 g. |
| Common Mistakes & How to Avoid Them |
| UoM mismatch |
Error like “Valid values are: Each” → METRC expects Units. Fix: Change UoM to Units and set Unit Weight. |
| Wrong Unit Weight |
Eighth set to 3.0 g instead of 3.5 g → inventory doesn’t reconcile. Fix: Set correct Unit Weight and adjust as needed. |
| Forgetting Order Quantity |
Changing to Units but not entering Order Quantity means no pre-pack units are created. Fix: Enter the number of packages you’re making and Save. |
| Related Articles |
|
|
| ✅ Set the correct UoM, Unit Weight, and Package Weight to ensure accurate pricing, inventory, and METRC reporting. |