Cucumber
Juice

One pound of cucumber (approximately 454g) yields roughly 340–385ml in a masticating juicer — about 11.5–13 oz, close to a full 12 oz glass. A centrifugal juicer pulls less: typically 295–340ml from the same pound.

Cucumber is among the highest-yielding vegetables you can juice. At 95%+ water content, even a centrifugal juicer extracts well above average. If you're comparing cucumber to carrots or beets, expect notably more juice per dollar of produce.

About 1 to 1.5 medium cucumbers (roughly 300–450g unpeeled) will fill an 8 oz cup in a masticating juicer. Kuvings' benchmark with their EVO820 puts it at just over 1 cucumber per cup at 0.25 lbs input — suggesting a smaller cucumber count, but produce size varies considerably.

A standard English cucumber weighs about 300g. One English cucumber in a masticating juicer yields roughly 210–240ml, just under a full cup. Two English cucumbers comfortably fills a 16 oz glass with room to spare.

A 5 lb bag (2,268g) yields approximately 1,700–1,925ml in a masticating juicer — roughly half a gallon, or about 7–8 standard 8 oz glasses. Centrifugal extraction drops that to approximately 1,475–1,700ml.

Cucumbers are one of the most efficient bulk-purchase juicing vegetables. If you're juicing daily at 16 oz per day, a 5 lb bag covers 4–5 days in a masticating juicer.

Freshness is the biggest variable. Cucumbers lose moisture fast — a cucumber that's been in the fridge for 5 days will yield noticeably less than a fresh one. If your yields are consistently below the ranges here, freshness is usually the culprit.

Beyond that: variety matters (English cucumbers yield more than thicker-skinned garden varieties), chute size matters (smaller pieces extract better), and peel thickness matters. Waxed conventional cucumbers have thicker skins than organic; if you're leaving the peel on, switch to organic or peel them to reduce resistance.

The macronutrient profile is nearly identical across juicer types — cucumber juice is predominantly water at any extraction method. Where juicer type makes a measurable difference is vitamin C and antioxidant retention.

Centrifugal juicers introduce air during the high-speed spin, which oxidizes heat-sensitive compounds. Cucumber's vitamin C (about 3mg per 100ml in masticating extraction) degrades 15–30% faster in centrifugal extraction. For most people this is negligible given cucumber's modest vitamin C levels. Masticating and twin gear juicers also retain more of cucumber's flavonoid antioxidants and silica compounds, which are more fragile than the simple mineral content.

No — cucumber juice is one of the lowest-sugar juices available. At roughly 2.1g of natural sugar per 100ml and only 19 calories, it won't spike blood sugar meaningfully. For comparison, carrot juice runs about 9g sugar per 100ml, and orange juice about 8–9g.

The glycemic index of cucumber is estimated at 15 (raw), which puts cucumber juice firmly in the non-issue category for blood sugar management. If you're on a low-sugar juice protocol, cucumber is an excellent base or blending partner that adds volume without adding glycemic load.

It depends on the variety and your taste preference. The peel is where most of the vitamin K, some beta-carotene, and fiber are concentrated — juicing with the peel on extracts more of those compounds.

The practical consideration is bitterness. English cucumbers and thin-skinned organic varieties juice beautifully with the skin on — mild flavor, green color, no bitterness. Thick-skinned conventional cucumbers can add a slightly bitter edge. Waxed cucumbers should always be peeled before juicing, since the wax coating blocks extraction and the wax itself doesn't belong in juice. When in doubt: organic, unpeeled; conventional, peeled.

Cucumber juice has a clean, mild, slightly grassy flavor — almost neutral compared to celery or beet. The skin adds a subtle green note; peeled cucumber juice is closer to lightly flavored water.

Because it's so neutral, cucumber is one of the best juicing bases for blending. It pairs naturally with lemon (adds brightness without sweetness), ginger (heat contrast), celery (similar clean profile, adds sodium and depth), apple (sweetens without overpowering), and mint (classic combination). It's also a reliable diluting agent when a blend like carrot-ginger or beet is too intense.

Fresh cucumber juice is best within 24 hours and noticeably degrades by 48 hours — it oxidizes and develops a slightly fermented edge. Masticating juicer output holds marginally longer than centrifugal due to less oxidation during extraction, but cucumber's high water content makes it one of the less stable fresh juices regardless.

If you're batch-juicing, store in a sealed glass jar filled to the top (minimizes headspace and slows oxidation). For anything beyond 48 hours, freeze it — cucumber juice freezes well and retains most of its flavor and electrolyte content.

Cucumber juice has no known toxicity at normal intake levels. It's diuretic — the combination of water volume and compounds like cucurbitacin gently increases urine output — so very high quantities (32+ oz daily) can wash out electrolytes if you're not replacing them.

The one practical concern is cucurbitacins — bitter compounds naturally present in cucumber, concentrated more in the peel and stem end. Commercial cucumbers are bred low in cucurbitacins, but some homegrown or heirloom varieties have higher levels; bitterness is the warning sign. Bitter cucumber juice should be discarded or diluted, not pushed through. Beyond that, cucumber juice is one of the gentler juices and reasonable daily quantities (8–16 oz) have no documented downside for most people.