The Spice Scale
The House rates spice from zero to five, where zero means no sex on the page and five means explicit throughout and central to why readers pick the book up. The scale measures three things at once — how explicit the scenes are, how often they happen, and how much of the book they occupy — because a single scene written frankly is a different read from twenty written the same way. Every book on this site is rated on this scale by the same standard, so a four here always means the same thing.
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The six levels
- Spice 0 out of 5, Closed to the world0 — Closed to the world2 books indexed
- No sex, and no scenes written to stand in for it. Romance may be central, but the bedroom door is not merely closed — it is not in the book.
- Spice 1 out of 5, A door, closed1 — A door, closed13 books indexed
- Kissing and clear attraction. Sex may happen, but it happens between chapters and is referred to rather than shown.
- Spice 2 out of 5, Warm2 — Warm11 books indexed
- One or two scenes on the page, written briefly and without much anatomical detail. The heat is in the build-up rather than the act.
- Spice 3 out of 5, Hot3 — Hot9 books indexed
- Several explicit scenes of real length. Sex is part of how the relationship develops rather than a reward at the end of it.
- Spice 4 out of 5, Explicit4 — Explicit10 books indexed
- Frequent, detailed, and frank in its language. A substantial share of the page count, and unmistakably written to arouse.
- Spice 5 out of 5, Scorching5 — Scorching5 books indexed
- Explicit throughout, often adventurous in content, and central to the book's appeal. Readers who want this know they want it.
What the scale does not measure
Spice is not a measure of quality, and it is not a measure of how romantic a book is. Those are rated separately — romance prominence says how much of the book is the relationship, and craft says how well the sentences are made. A book can be a five for spice and a two for romance, which describes a real and reasonably common kind of book.
Darkness is also rated on its own axis. Explicit content and disturbing content are different things, and a reader avoiding one is often perfectly happy with the other.
The honest limitation
These are editorial ratings — one reader applying a written standard — not an average of many opinions. That makes them consistent, which is the point, but it also means they carry one person’s calibration. Where a rating seems wrong to you, the definitions above are what it should be argued against.
Questions readers ask
- What do book spice levels mean?
- Spice levels rate how much explicit sexual content a book contains, usually from one to five. There is no industry standard, which is why the same book is often rated a three on one site and a five on another. The House's scale is published in full so that a rating can be checked against a definition rather than taken on trust.
- Is spice the same as how romantic a book is?
- No, and conflating the two is the most common failure of book rating systems. A book can be central-romance and closed-door, or plot-first and scorching. The House rates romance prominence separately from spice for exactly this reason — readers filter on them separately, and frequently want one high and the other low.
- What is a 5 out of 5 spice book?
- Explicit throughout, frequently adventurous in content, and central to the book's appeal rather than a subplot. At five, sex is a substantial share of the page count and the book is unmistakably written to arouse. Readers who want this generally know they want it, which is why the top of the scale is defined by frequency as much as by explicitness.
- Who decides the ratings?
- They are editorial judgements made by a person reading against the published scale, not aggregated reader scores. That is a limitation and it is stated on every book page. Where readers on the app have supplied enough of their own spice ratings to be meaningful, those will be shown alongside — clearly labelled as reader data rather than merged into ours.