1 US fl oz = 29.5735 ml, so a 30 ml perfume is 1.01 oz (sold as 1 oz), 50 ml is 1.69 oz (1.7 oz) and 100 ml is 3.38 oz (3.4 oz). A fine-mist perfume pump delivers 0.1–0.2 ml per spray, so 30 ml gives 150–300 sprays, 50 ml 250–500 and 100 ml 500–1,000; a 5 ml travel spray gives 25–50 and a 2 ml vial 10–20. 100 ml is the ceiling because it is the carry-on liquids limit. Most indie brands launch on 50 ml because a stock 30 / 50 / 100 ml flacon family shares one neck — FEA 15 crimp or 15/415 / 18/415 screw — so one pump and one cap serve every size, and a stock flacon starts around 500–1,000 pieces with no mould.
The three commercial sizes, converted
US labels are printed in fluid ounces, EU and UK labels in millilitres, and the same bottle carries both. The conversion is fixed: fl oz = ml ÷ 29.5735. The rounding is what confuses people — 100 ml is 3.38 oz, but the label says 3.4 oz; 50 ml is 1.69 oz, labelled 1.7 oz; 30 ml is 1.01 oz, labelled 1 oz. A UK imperial fluid ounce is 28.4131 ml, which is why a "3.5 fl oz" imperial label can sit beside a "3.4 oz" US label on one 100 ml flacon.
Weight follows density, not volume. Alcohol-based fragrance sits near 0.85–0.90 g/ml, so a 100 ml eau de parfum weighs about 85–90 g of juice — and 250–450 g with the glass, which matters for freight and for how the bottle feels in hand. Perfume oils run 0.91–0.93 g/ml. If you need to move between ml, oz and grams for a spec sheet, the cosmetic packaging unit converter does it at your formula's density, and the cosmetic bottle size guide covers the skincare sizes alongside these.
Sprays per bottle: the maths
A fragrance-grade fine-mist pump is specified at 0.1–0.2 ml (60–100 µl) per actuation, with dosing error held within 0.02 g; 12.5–24 mm sprayer sizes cover the range, and the pump is rated for at least 1,500 actuations. Divide the fill by the dose and you have the spray count. Two sprays a day empties a 30 ml in three to five months and a 100 ml in eight months to a year and a half — which is the real reason the three sizes map onto entry, hero and flagship price points.
| Size | US fl oz (label) | Sprays at 0.1 ml | Sprays at 0.2 ml | Daily use, 2 sprays |
|---|---|---|---|---|
| 1.5–2 ml vial | 0.05–0.07 oz | 15–20 | 8–10 | About a week: a sample |
| 5 ml | 0.17 oz | 50 | 25 | 2–4 weeks: discovery / travel |
| 10 ml | 0.34 oz | 100 | 50 | 1–2 months: travel spray |
| 15 ml | 0.5 oz | 150 | 75 | 2–3 months: purse spray |
| 30 ml | 1.01 oz (1 oz) | 300 | 150 | 3–5 months: entry EDP |
| 50 ml | 1.69 oz (1.7 oz) | 500 | 250 | 4–8 months: the hero size |
| 100 ml | 3.38 oz (3.4 oz) | 1,000 | 500 | 8–17 months: flagship and gifting |
One check worth writing into the spec: pump service life is calculated as total volume ÷ dose × 1.2. A 100 ml flacon on a 0.1 ml pump needs 1,000 sprays × 1.2 = 1,200 actuations, comfortably inside the ≥1,500 rating; a 100 ml on a splash cap needs no pump at all, which is why splash bottles are cheaper and leak more.
Perfume bottle dimensions by size
A perfume flacon is wider and shorter than a skincare bottle of the same capacity: a 50 ml flacon is broader than a 100 ml serum bottle. The ranges below are the typical partner-factory range for a stock flacon including its cap, taken from the size guide master table. The nominal size is not the brim-full volume — a bottle drawing carries a brim-full capacity held to ±5% and a fill line with headspace below it, so a "100 ml" flacon is a cavity of roughly 105–115 ml filled to 100.
| Size | Typical flacon Ø × height (mm, with cap) | Neck finish | Where it sits in a range |
|---|---|---|---|
| 2 ml vial | Ø10 × 45–55 | Tubular Ø10–Ø15 drawn glass; plug stopper or mini screw sprayer | Sampling programmes, discovery sets |
| 5 ml mini spray | Ø15–20 × 50–60 | Tubular Ø15–Ø20 or 15/415 screw | Discovery, gift-with-purchase, travel |
| 10 ml travel spray | Ø15–18 × 80–95 | Tubular Ø15–Ø20 or 15/415 screw, 0.1 ml pump | Travel and discovery layer |
| 15 ml | Ø25–30 × 70–85 | 15/415 screw or FEA 15 crimp | Purse spray, coffret |
| 30 ml | Ø35–45 × 80–100 | FEA 15 crimp or 15/415 screw | Entry eau de parfum |
| 50 ml | Ø45–55 × 95–120 | FEA 15 crimp or 15/415 / 18/415 screw | The hero size for most launches |
| 100 ml | Ø55–65 × 110–140 | FEA 15 crimp or 18/415 screw | Flagship, gifting; carry-on maximum |
The neck is the structural decision. FEA 15 is the crimp standard across 30 / 50 / 100 ml stock flacons (FEA 20 appears on some larger or heavier-shouldered shapes); 15/415 and 18/415 are the screw alternatives. Because the family shares one neck, one pump reference and one cap reference serve all three sizes — the single most important fact in perfume-size planning. The trade-offs between crimp and screw are on crimp vs screw pump and the notation on neck finish and closure standards.
Which size to launch first — the MOQ and mould logic
Founders usually ask this as a marketing question. It is a tooling question. A stock 30, 50 or 100 ml flacon from a public mould starts around 500–1,000 pieces undecorated, about 2,000 with a screen-printed logo and 3,000–5,000 with sprayed custom colour. Your own shape from a new mould is 10,000+ pieces with glass tooling of USD 350–555 per set, USD 2,200–4,450 for a 4–8 cavity set, and full custom programmes commonly quoted at USD 8,000–20,000 — and a made-to-order glass run at most furnaces carries a 30,000–200,000 piece floor. The numbers are on the perfume bottle supplier page and the MOQ index.
Three consequences follow:
- Launch on 50 ml. It is the largest size a customer will risk on an unfamiliar scent, it carries the hero price point, and every stock flacon family is made in it. A first order of 1,000–2,000 sets on a stock 50 ml with decoration is realistic; the same order split across three sizes is three decoration set-ups and three minimums, because a spray minimum attaches to the shape.
- Add 30 ml or 100 ml second, on the same neck. Because the pump and cap references carry over, the second size adds a glass line and a box size, not a new pump development. Pumps run about 1,000 pieces in stock silver or gold; a custom-colour collar is 10,000, so keep the collar stock and carry your colour on the cap (sprayed ABS 2,000–5,000) and the box (1,000–2,000).
- Decide the discovery layer now. Matching 2 ml vials and 5–10 ml travel sprays to the flacon is cheap at the start and expensive to retrofit, because the decoration house colour-matches the family in one run.
Lead times follow the route: stock flacon 15–25 days at the factory gate (samples 7–10 days), sprayed custom colour 30–40 days after sample approval, and a custom mould 45–60 days of tooling before 30–60 days of glass — a 90–120 day programme, on the lead-time index. A 1,000-set family on stock glass ships 15–25 days after golden-sample approval; a fully custom-coloured family lands at 3,000–5,000 sets.
Sample and discovery sizes: 1.5–10 ml
The discovery layer is where most indie fragrance brands actually acquire customers, and it has its own formats. 1.5–2 ml vials are drawn tubular glass, Ø10–Ø15, with a plug stopper or a mini screw sprayer — the sampling programme size, at 10–20 sprays. 5 ml mini sprays (Ø15–20 × 50–60 mm) suit discovery sets and gift-with-purchase. 10 ml travel sprays on a 15/415 screw neck with a 0.1 ml pump give 100 sprays and are the size a customer carries on a plane without thinking about it. 5–10 ml roll-ons carry perfume oils: a PP roller housing with a steel or glass ball and a tamper-ring cap, tested against the oil. The formats, minimums and tests are on travel size perfume bottles and atomizers; the full catalogue is on fragrance bottles.
A one-line brief
Write the size decision as one line and every supplier will quote the same thing: 50 ml stock flacon, super-flint, FEA 15 crimp (or 15/415 screw), 0.1 ml fine-mist pump, stock silver collar, sprayed ABS cap, rigid box, 2,000 sets; 10 ml travel spray and 2 ml vial to match. The QC the set is signed against — atomisation, dose, ≥1,500 actuations, vacuum leak at −0.08 MPa for 15 minutes with ≤0.5% loss — is on QC standards, and the questions to ask any supplier are on how to evaluate a China packaging supplier.
Vella is a Guangzhou-based beauty packaging solutions provider — a sourcing partner, not a factory — that helps indie and emerging beauty brands specify, source, sample, quality-control and ship complete fragrance packaging systems from vetted partner factories operating to ISO 22716 / GMP. For a size decision, send the formula, the shelf and the target price to contact; the reply carries the capacity, neck and stock options on one line, with the fragrance packaging system around it.
Frequently asked
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