Capacity and family fit
Choose among Tiger JNP-S sizes
Start at the minimum batch, not the largest number
The four U.S. Tiger JNP-S models share a simple conventional format: a heating plate, one Plain Rice setting, a physical start switch, and automatic Keep Warm after cooking. Their useful differences are the exact capacity ranges and the body size. The family page lists four separate product numbers, and the shared U.S. manual ties a different white-rice range to each one. Use the Tiger measuring cup supplied with the cooker—about 180 mL or 5.29 ounces—not an ordinary U.S. cup.
| Exact model | Nominal pot capacity | Dry supplied cups | Listed watts | Approximate closed size |
|---|---|---|---|---|
| JNP-S55U | 0.54 L | 1–3 | 305 W | 9.1 × 8.7 × 8.8 in |
| JNP-S10U | 1.0 L | 1–5.5 | 505 W | 10.7 × 9.8 × 10.3 in |
| JNP-S15U | 1.5 L | 3–8 | 560 W | 11.8 × 11.0 × 10.7 in |
| JNP-S18U | 1.8 L | 3–10 | 650 W | 11.8 × 11.0 × 11.7 in |
The first number in the range matters as much as the last. The S55U and S10U both begin at one cup, so they can cover a small daily meal; the S15U and S18U start at three. A ten-cup label does not make the S18U a good answer for one-cup weekdays. If you usually cook two cups and sometimes eight, the S10U is not large enough for the occasional batch and the S15U does not accept the usual small batch. That routine may call for a different family with a compatible minimum rather than a larger JNP-S.
Choose between the two smaller and two larger bodies
The S55U is the most compact option and reaches three cups. It suits a regular one-to-three-cup routine where counter space and a simple switch matter. The S10U adds room up to 5.5 cups while retaining a one-cup minimum; it is the more adaptable choice when small and medium batches alternate. Both are useful only if plain white rice is enough. If a one-cup batch needs a separate brown or porridge program, capacity alone cannot satisfy that recipe request.
The S15U and S18U share an approximate 11.8-by-11-inch footprint. The S18U is taller and adds two cups of top-end capacity, but both begin at three. For households that consistently serve larger amounts, compare their maximums; for a tight shelf, measure the lid-open path as well as closed dimensions. Tiger asks for about 30 cm clearance from walls or furniture. The shared product image shows an unlabelled JNP-S cooker, so do not infer which capacity is pictured or estimate the footprint from its apparent scale.
Know what the shared method leaves out
These are not menu-rich cookers. Tiger documents one Plain Rice setting, and the manual gives no delayed-finish timer, digital clock, Brown or GABA program, porridge scale, mixed-rice menu, or included steaming basket. The matched plan should therefore be plain white rice only. A white-rice maximum cannot be borrowed for brown rice, and a warm lamp does not create scheduling: the cooker starts when the switch is pressed and changes to Keep Warm after cooking.
The manual’s finish step is to keep the lid closed for about 15 minutes after the switch releases, then stir and loosen the rice. That rest is not the full cooking time. Automatic warming is described for white rice only, for no more than 12 hours, and not below the model’s minimum amount. This makes the larger JNP-S capacities less convenient for a small leftover portion, even if the cooking pot has ample headroom.
When another Tiger family makes more sense
Keep the JNP-S in the shortlist if simple white rice is the goal and your normal quantity stays inside one exact range. Consider Tiger’s JBS-A55U or JAX-T family when a timer, dedicated grain modes, or more controls are essential; compare their own menu and batch tables because their ranges differ. A basket meal is not listed as an included JNP-S method. Material-sensitive shoppers should also read the exact note: Tiger’s U.S. disclosure names PFAS used for nonstick properties of the JNP-S inner pot, while the manual describes a fluorocarbon coating that may wear and advises against metal utensils and abrasive cleaning. The disclosure does not establish a health effect or BPA status.
Measure dry rice with the supplied cup, follow the line inside the exact model’s pot, wash rice separately, and let the model-specific minimum guide the choice. Those three checks—what you cook, how much you cook, and whether you need a timed or specialty method—are more useful than selecting a cooker by its maximum capacity alone.