How Many Watts Should a Juicer Have?

An auger juicer needs 130 to 240 W and a centrifugal juicer needs 400 to 1200 W, and those two ranges cannot be compared with each other. Omega states 150 W for the NC900HDC and Breville states 1200 W for the Juice Fountain Cold XL, and the 150 W machine will out-extract the 1200 W machine on kale every time. Wattage is rated power consumption, not extraction power -- so the answer to how many watts you need depends entirely on which mechanism you are buying.

What a juicer's wattage actually measures

Wattage on an appliance label is the rated electrical power the motor draws. It tells you what the machine costs to run and roughly how much work the motor can do before it struggles -- and nothing at all about how efficiently that work turns into juice.

The two mechanisms spend that power on completely different things. A centrifugal machine spends it on speed: Breville states 6,500 and 12,000 RPM on the JE98XL, and spinning a steel basket that fast against the drag of wet pulp takes real power. An auger machine spends it on torque: a gearbox trades speed for force, so 50 RPM at 240 W can crush a carrot that a far higher-wattage spinning basket would merely shred. High wattage is a symptom of the centrifugal design, not a measure of its juicing ability.

Every published figure on this site

Two things jump out of that table. The first is the clean split: everything above 400 W is centrifugal and everything at 240 W or below is an auger or a press. The second is that wattage is often the only performance figure a brand publishes, which is exactly why it gets over-read.

What more watts buys you inside one mechanism

On an auger: margin under load. No brand publishes a torque figure, a stall rating or a load test, so what follows is reasoning from the published numbers rather than a measurement. A lower-powered motor turning the same auger at the same speed has less headroom when it is fed dense produce quickly. Nama's own range illustrates it: the J2 and J3 both run at 50 RPM, but Nama states 200 W for the J2 and 130 W for the J3. Same mechanism, less margin -- which matters on a dense wad of celery or a bag of carrots fed fast, and does not matter at all on a cucumber.

On a centrifugal machine: basket speed held under load. A heavier load slows a spinning basket, and slower means less extraction. More rated power holds the speed up. Breville's 1200 W on the Juice Fountain Cold XL is doing exactly that, which is why it is the fastest machine on this site through a crate of apples.

On neither: yield. No manufacturer publishes a yield figure in ounces per pound of produce, so there is no published relationship between wattage and how much juice you get. Anybody quoting one made it up. Juicer yield explained sets out what is actually knowable.

What to look for instead of wattage

If wattage is the number you were going to shop on, these four published specs will serve you much better:

1. 1.RPM, because it tells you which mechanism you are looking at and therefore which produce the machine suits. Anything in the thousands is centrifugal; 43 to 110 is an auger. Juicer RPM explained covers the band properly.
2. 2.Chute width, which is the spec that costs you time every single session. Kuvings states 3.5 in on the REVO830; Tribest states 1.5 in on the Greenstar Pro. That difference is a chopping board.
3. 3.A reverse function, for backing a jam out of an auger instead of dismantling it. Nutribullet and AMZCHEF both publish one.
4. 4.The warranty term, and its structure. Omega, Hurom and Kuvings USA state 15 years; Ninja and Nutribullet state 1 year. And Nama states 15 years on the motor but only 2 years on parts -- on an auger machine it is the parts that wear.

Three machines at three power points

One high-wattage centrifugal machine, one high-torque auger and one low-wattage auger, so the spread is visible against real published figures.

The Breville Juice Fountain Cold XL at a stated 1200 W is the fast one, with a 3.5 in chute and a 1-year warranty. The Kuvings REVO830 at a stated 240 W is the highest-torque auger here, and the one we would buy overall. The Nama J3 at a stated 130 W is the lowest-powered machine on the site and still juices greens perfectly well -- which is the clearest possible demonstration that wattage is not the spec that decides this.

So what should you actually buy?

• Daily greens or celery. An auger at any wattage in the published range. Feed it slowly and 150 W is fine. Best juicers for vegetables.
• Carrots and beets as routine. The upper end of the auger range -- Kuvings at 240 W, Omega's J8006HDS or the Tribest Slowstar at 200 W -- or a centrifugal machine, which handles hard produce well. Best juicers for hard vegetables.
• Apples and oranges fast. A centrifugal machine, where wattage genuinely correlates with throughput. Best fruit juicers.
• You are comparing two machines of the same type. Then wattage is a legitimate tiebreaker -- within the mechanism only.

And if you are still choosing a mechanism, best juicer machines sorts the whole field by type, while how to choose your first juicer starts further back.