A standard atomiser delivers about 0.1 ml per press, so a 100 ml bottle holds roughly 1,000 sprays, a 3.4 oz bottle is the same thing in different units, a 1 oz bottle is about 300, and a 5 ml sample is about 50. At a normal two sprays a day, a 100 ml bottle lasts about sixteen months. That single number is the most useful thing in fragrance shopping, because it turns a scary sticker price into a cost per wear — and on that measure a $25 bottle of Armaf Club de Nuit Intense Man costs under five cents a day.
The number everything else comes from
Spray volume is not standardised, but a conventional designer atomiser puts out somewhere between 0.07 ml and 0.12 ml per press, and 0.1 ml is the figure the industry and the hobby both work with. We use 0.1 ml throughout this page and say so openly — it is a stated assumption, not a measurement we took. Your bottle may differ by twenty or thirty per cent in either direction; travel atomisers and the generous pumps on many Arab-house bottles tend to deliver more, and a few niche houses deliberately deliver less.
With that assumption, the arithmetic is simple. Millilitres divided by 0.1 gives sprays. Sprays divided by your daily use gives days. Price divided by sprays gives cost per spray. Nothing on this page is more complicated than that, and nobody selling fragrance has any incentive to do it for you.
Ounces, millilitres and the sizes you will actually see
American fragrance listings use fluid ounces, European ones use millilitres, and the conversions are not round. One US fluid ounce is 29.57 ml, so:
- 0.17 oz = 5 ml — the standard sample vial, about 50 sprays
- 0.5 oz = 15 ml — a travel atomiser, about 150 sprays
- 1 oz = 30 ml — the small retail bottle, about 300 sprays
- 1.7 oz = 50 ml — the mid retail bottle, about 500 sprays
- 2 oz = 60 ml — common on EDPs, about 600 sprays
- 3.4 oz = 100 ml — the standard full size, about 1,000 sprays
- 6.8 oz = 200 ml — the big value bottle, about 2,000 sprays
The practical point of that list: the headline price on a listing is very often the smallest bottle, and a 1 oz bottle at two-thirds the price of a 3.4 oz bottle is not a bargain, it is a third of the fragrance for two-thirds of the money. Check the volume in the listing title every single time.
How long a bottle actually lasts
At two sprays a day, a 100 ml bottle gives you roughly 500 days — sixteen months. At four sprays a day it is eight months. At two sprays on weekdays only, it is nearly two years. A 5 ml sample at two sprays a day is 25 days, which is why a decant is a genuinely useful way to live with a fragrance for a month before committing.
Most people dramatically overestimate how fast they will get through a bottle, which is how collections of eight part-used bottles happen. If you own more than two or three fragrances, none of them is ever going to run out — our how many colognes do you need guide makes the case for a smaller, more deliberate rotation, and does cologne expire explains why a bottle you take four years to finish may turn before you reach the bottom.
Sprays and cost per spray, by bottle
Below is the real arithmetic across the size range, using live prices and the 0.1 ml assumption. The per-millilitre column is the honest way to compare a 30 ml atomiser set with a 200 ml designer bottle.
| Bottle | Size | Price | Per ml | Sprays in the bottle |
|---|
| Maison Francis Kurkdjian Baccarat Rouge 540 (5 ml travel refill)5 ml travel spray — about 25 days at two sprays a day | 5 ml | $45.99 | $9.20 | ~50 sprays |
| Dior Sauvage Elixir 7.5 ml Mini7 ml miniature — a month of occasional wear | 7.5 ml | $37.57 | $5.01 | ~70 sprays |
| Creed Aventus Atomizer Set (3 × 10 ml)3 × 10 ml official set — about five months at two a day | 30 ml | $260.00 | $8.67 | ~300 sprays |
| Prada Luna Rossa Carbon50 ml retail bottle — the common 1.7 oz size | 50 ml | $94.97 | $1.90 | ~500 sprays |
| Montblanc Explorer60 ml — about 20 months at two sprays a day | 60 ml | $100.00 | $1.67 | ~600 sprays |
| Dior Sauvage EDT100 ml, the 3.4 oz standard full size | 100 ml | $131.72 | $1.32 | ~1,000 sprays |
| Armaf Club de Nuit Intense Man105 ml — the best sprays-per-dollar bottle on this site | 105 ml | $23.97 | $0.23 | ~1,050 sprays |
| Al Haramain Amber Oud Rouge120 ml — over three years at two sprays a day | 120 ml | $68.99 | $0.57 | ~1,200 sprays |
| Dior Sauvage EDP200 ml, the 6.8 oz value bottle | 200 ml | $210.44 | $1.05 | ~2,000 sprays |
#ad · Prices are live from the Amazon Product API, as of October 4, 2026, and per-milliliter is calculated from them. Where we have no verified live price we show a dash rather than a number that has rotted. Closeness calls are our editorial judgment, not lab measurements.
Two things jump out of that table every time we rebuild it. The first is that travel sizes and atomiser sets are expensive per millilitre — you pay a large premium for small, and that is the price of trying something safely. The second is that the cheapest bottles are not just cheap, they are cheap per spray by an order of magnitude, which is the real argument for the budget houses.
How to use this when you shop
Work out your own daily number first
Two sprays is the honest default for an EDP, three or four for a light EDT, one for something beast-mode. Count what you actually do for a week before you calculate anything — people who think they use two sprays frequently use five. Our how many sprays guide covers the right amount by concentration and occasion.
Compare per millilitre, never per bottle
This is the single discipline that stops you overpaying. Divide the price by the millilitres and compare that number across every listing you are looking at. A big bottle of something you wear daily is almost always the right buy; a big bottle of something you wear twice a year is money in a cupboard.
Buy small for anything you are not sure about
The per-millilitre premium on a 5 ml decant or a 30 ml set is worth paying when the alternative is a 100 ml bottle you regret. A month of real wear tells you more than any review, including ours. Fragrance decants and travel-size cologne cover the sensible ways to do that.
Buy large only for a confirmed signature
The 200 ml bottle is the best value on the shelf and the worst purchase in the shop if you are wrong. Buy it for the one fragrance you have worn for a year and know you will finish — and be aware that a bottle you will take three years to get through has its own problem, because fragrance oxidises. Keep it boxed, cool and dark.
Decant a big bottle rather than buying two
If you want your signature fragrance in your bag or your car, a four-pack of empty refillable atomisers costs a few dollars and solves it. That is cheaper than a travel size, it does not expose the main bottle to being carried around, and a 10 ml atomiser is a hundred sprays — more than you will use on any trip.
Remember the spray figure is an assumption
Everything on this page rests on 0.1 ml per press, which is the common figure and not a law. If your atomiser is generous, your bottle will go faster than the table says. We would rather tell you the assumption than present a number as though we measured it — which is the same standard the rest of the site runs on, set out in how we review.
