What “spice level” means
In romance reading circles, “spice” is shorthand for how much on-page sexual content a book contains and how explicit it is. A low-spice book may only have kissing and romantic tension. A high-spice book may include frequent, detailed love scenes.
Spice is separate from quality, and it is separate from how romantic a story feels. Some readers actively look for it and others want to avoid it, which is why a quick check before you start is useful.
The common scale, from closed door to open door
There is no official standard, but these labels come up often:
- No heat or “sweet”: romance without any love scenes, sometimes only kissing.
- Closed door or “fade to black”: intimacy happens, but the scene cuts away before the details.
- Open door: love scenes are shown on the page, with varying degrees of detail.
- Explicit or “high spice”: frequent and detailed scenes, sometimes with specific kinks or themes.
Many sites turn this into a numbered scale, often shown as peppers or flames. The numbers and their definitions differ from site to site, so always read the key of the scale you are using.
How to check a book step by step
Use a dedicated spice or heat database
Some sites exist mainly to answer this question. The site isthebookspicy.com publishes a spice scale and lets you look up titles. Romance-focused databases such as romance.io also show heat ratings alongside tropes and reader reviews. Coverage is uneven, so a newer or smaller title may be missing.
Read content warnings and reviews
Book tracking apps often include reader-submitted content warnings, and The StoryGraph is one example. Written reviews are useful too, because readers frequently say things like “very steamy” or “closed door” outright. Search a review page for words such as “spice”, “open door”, or “explicit”.
Check the blurb, tropes, and shelves
Genre labels give clues. Categories such as “new adult”, “dark romance” or “erotic romance” usually signal more explicit content than “sweet” or “clean” romance. User shelves on Goodreads and similar sites can also help, though they are informal.
Use the sample
If a store offers a free sample, the first chapters rarely settle the question, but they show tone and writing style. If you are borrowing from a library, you can skim a few pages before committing.
Why ratings disagree
Two readers can give the same book different heat ratings for several reasons:
- Each site uses its own scale and definitions.
- People have different comfort levels, so “medium” to one reader is “high” to another.
- The spice may be concentrated in a few scenes, which some raters count and others do not.
- Ratings are mostly reader-submitted and may be based on only a handful of votes.
Treat any single rating as a rough guide. Comparing two or three sources is more reliable.
Examples from this site
We have a few book guides in this cluster where heat comes up. These are general impressions from reader and reviewer commentary, not official ratings, so verify with your preferred tool:
- Icebreaker is a college sports romance, and reviewers describe it as including on-page love scenes.
- Layla is a romance with a paranormal thriller twist, and heat is only one part of what readers discuss.
- Heart Bones is a Colleen Hoover contemporary romance. If heat matters to you, check a rating before reading.
- Final Offer is a billionaire romance, and reader commentary points to open-door scenes.
- Life’s Too Short is a romantic comedy with heavy emotional themes, and it is worth checking a rating if you want to know.
Spice is not the only thing to check
If you read for comfort, spice level is often only one of several things to look up. Content warnings can cover topics such as addiction, grief, illness, or violence, and they matter just as much to many readers. Both are easy to check in the same places.
Frequently asked questions
How do I check how spicy a book is? Look it up in a spice database, read content warnings, and skim a few reviews that mention heat. Using two sources is better than one.
Is there a spicy book website? Yes. isthebookspicy.com is one, and romance.io and The StoryGraph are other commonly used places to look, though none is complete.
What spice level is Icebreaker? Reviewers describe on-page love scenes, so most would call it open door. Our Icebreaker review has more context.
Do spice scales mean the same thing everywhere? No. Always read the scale’s key before comparing numbers across sites.