Quick Answer ✅

An ounce equals 28 grams. Your pre roll count depends on the fill weight you choose:

Real-world batches often land 1–3 pieces lower due to spill, packing variation, and moisture drift. Plan a small buffer.

Common Sizes & Typical Fills 📏

“Sizes” usually reference pre roll length and tip size. Typical fill weights many teams aim for:

Shorties / Minis (70–84 mm)

• • 0.25–0.35 g target fills for quick solo sessions.
  • Great for sample packs, limited drops, or micro-dose style experiences.

Classic (≈ 84–98 mm) 🎯

• • 0.5 g and 0.7–0.75 g fills are common “daily driver” options.
  • Good balance of burn time, cost, and quality perception.

King / Tall (≈ 109 mm) 👑

• • 1.0 g is the standard target; some formats support up to ~1.25 g with tighter pack and suitable grind.
  • Popular for premium or group-friendly formats.

Tip 🔍

Think in grams per unit first—then pick the cone that comfortably achieves that weight with your grind and production method.

The Calculator Formula

You only need one line 😍 :

count = total_grams / grams_per_pre_roll

Since an ounce is 28 grams:

• • For 0.5 g fills: 28 / 0.5 = 56
  • For 0.7 g fills: 28 / 0.7 = 40
  • For 1.0 g fills: 28 / 1.0 = 28

Reality Check ✅

Expect small differences batch-to-batch. A safe planning tweak is multiplying by 0.98 to account for minor loss:

practical_count ≈ (28 * 0.98) / grams_per_pre_roll

Counts per Ounce (Size Table) 📊

If you consistently end up 1–2 units short: tighten your grind window, standardize tamp pressure, and weigh a random sample every 10–20 units.

Why Results Vary in Real Life 🌦️

1) Grind Size & Uniformity

Too coarse → air gaps and lower weight per unit. Too fine → restricted airflow and over-packing to hit target grams. Aim for a consistent, medium grind.

2) Moisture Drift

Herb weight changes as humidity changes. If you weighed the material right after grinding and it dries slightly during production, finished pieces can weigh less than planned.

3) Spill & Trim Loss

Every line loses some material between the loader, tamping, and tray transfers. Even a 1–2% loss adds up across a batch.

4) Human Factors

Different packers tamp differently. Standard operating procedures (SOPs) + a light scale audit keep all hands aligned.

Pro Tips for Consistent Results ⭐

🔧 Create a “Target + Tolerance” card

Example: “0.70 g ± 0.05 g, tamp x2, twist to 4 mm tail.” Post it at the workstation and train to it.

⚖️ Weigh the Input & Output

Weigh your tray of ground herb before filling, then weigh finished units (minus packaging). Track variance by operator and batch.

🌡️ Stabilize Humidity

Store ground herb in sealed containers with humidity packs. Let cones rest in finished tubes or cartons to re-balance before final QC weigh.

Keep Tools Clean

Resin build-up (on tamps/loaders) causes under-fills and mess. Quick alcohol wipe between batches works wonders.

Sample Every 10–20 Units

Randomly pull 2–3 pieces, weigh, and log. If the average drifts, adjust tamp method or loader settings and continue.

Batch Planning for Brands & Shops 🧑🍳

Set Your Pre Roll Fill First

Pick the experience you want (mini, classic, king), then back-plan material, cones, and tubes.

Example Math 🧮

• • 0.5 g classics: 1 oz → 56. 1 lb (16 oz) → 896.
  • 0.35 g shorties: 1 oz → 80. 1 lb → 1280.
  • 0.7 g 98 mm: 1 oz → 40. 1 lb → 640.

COGS Snapshot (simple)

Rough unit cost (material only): cost_per_unit = material_cost_per_oz / (28 / grams_per_unit). Add cone, tube, labor, labels, and overhead for full COGS.

QA & Compliance Note

Keep a signed batch sheet with a small sample of unit weights. Auditable records build trust and help you maintain consistent quality over time.

FAQ ❓

1) Is an ounce always 28 grams?

Yes—plan your batch math using 28 grams per ounce.

2) What’s the most common fill size?

Classic 0.5 g and 0.7 g fills are popular for everyday use; 1.0 g kings are common for premium or shareable moments.

3) Why do I get fewer units than the math suggests?

Minor spill, packing style, and moisture drift. Build a 1–3% buffer into your plan.

4) What grind works best?

Consistent medium grind—enough surface area for an even burn and easy draw without clogging.

5) Do long cones always hold more?

Usually, but tip length and cone taper matter. Go by target grams per unit and verify with a few test fills.

6) How do I keep weights consistent across a team?

Post a “target + tolerance,” standardize tamp counts, and weigh a random sample every 10–20 units.

7) What’s a quick way to estimate material for a batch?

Use: material_needed_g = target_units × grams_per_unit. Divide by 28 to get ounces.