How to read a wine score: 100-point, 20-point, star, and percentile systems

Q: Is a 95 Parker score really better than a 92?

Yes, but the gap is smaller than it looks because the effective scale compresses 15 points into 15 ranks. A 95 vs 92 is roughly the difference between top 10% and top 30% of wines rated by Parker — meaningful but not as dramatic as "95 vs 92" sounds in absolute terms.

Q: Why rescale crowd ratings so aggressively?

Because comparing scores across sources requires a common scale first. Vivino × 20 brings the crowd 1-5 onto a 20-100 effective range that can be set beside a 100-point professional score. The rescaling is purely mechanical; it's not a claim that a Vivino 4.3 equals a Parker 86. Note that a Rankquant wine score does not depend on this step at all — per-reviewer z-normalization is scale-free, since each reviewer is measured against their own distribution rather than against another source.

Q: What about the 5-star "half-star" increments?

Handled as decimals (4.5 → rescaled to 90, 4.3 → 86, etc.) before aggregation. No special treatment.

Q: Do older Parker scores still count the same as recent Vinous scores?

Nothing in a Rankquant number distinguishes them, because neither publication is ingested — wine scores are built from the Vivino reviewer pool, and no source or reviewer is weighted above any other in the first place. As a reader, treat the editorial continuity as real but the palate as shifted: a 2015 Parker 95 and a 2023 Vinous 95 are two different judgments wearing the same number.

By Ryan Siegal · Founder and Principal

Published 2026-04-23

The four scales you'll see

Parker 100-point (Wine Advocate, Vinous, Wine Spectator, Wine Enthusiast, Suckling, Dunnuck)

Nominal range 50-100; effective range 85-100. Parker explicitly designed the scale as a report-card: 90-95 "outstanding", 95-100 "extraordinary". In practice the sub-85 zone is nearly empty — wines scoring under 85 generally just don't get written up. That's a 15-point usable range pretending to be a 50-point range, which is why the scale has become so inflated over 40 years.

Jancis Robinson 20-point

Nominal range 12-20; effective range roughly 14-20. Jancis Robinson MW's house style is stricter: 18+ is rare, 19 is reserved for wines she considers excellent-for-the-ages, 20 almost never appears. Less inflation per unit on the scale, but lower coverage (only wines Jancis personally tastes).

Vivino / Cellar Tracker / retailer 1-5 stars

Nominal range 1-5; effective range 3.0-4.8 or so. Crowd platforms suffer the same rating-inflation problem as Amazon and Goodreads. Vivino averages around 3.8 across the whole catalog. A 4.5 is a strong wine; a 4.0 is modest; anything below 3.5 is notably flawed.

Rankquant normalized 1-5

By construction: 5 means top 5% of the peer set, 3 means peer-set average, 1 means genuinely underperforming. Not inflatable because the distribution is defined by the normalization itself, not by reviewer incentives.

Scale conversion table

The linear conversions that put every scale on a common 0-100 range, which is the minimum you need before two scores can be set beside each other at all. A Rankquant score does not use them — per-reviewer z-normalization is scale-free — but you need them to read a Jancis 17 next to a Parker 89:

Rescaling constants. Each source's native score is linearly transformed onto a common 0-100 range so two scales can be compared.
Parker 100-pt	Identity (no change). 89 → 89.
Jancis 20-pt	×5. 17 → 85.
Vivino 1-5	×20. 4.3 → 86.
CellarTracker 100-pt	Identity. 88 → 88.
Retailer 1-5	×20. 4.4 → 88.
Wine-Searcher community	Identity (100-pt).

Rescaling constants. Each source's native score is linearly transformed onto a common 0-100 range so two scales can be compared.

Rough cross-walk between scores you can use in a store

Rough cross-walk for wines that receive scores from multiple sources. Applies only to wines actually rated; does not correct for inflation pressure differences between houses.
Parker 100	Rankquant 5.0 · Jancis 20 · Vivino 5.0
Parker 95	Rankquant 4.9+ · Jancis 19 · Vivino 4.6-4.8
Parker 93	Rankquant 4.7 · Jancis 18 · Vivino 4.4-4.6
Parker 90	Rankquant 3.8-4.2 · Jancis 17 · Vivino 4.2-4.4
Parker 88	Rankquant 3.2-3.6 · Jancis 16 · Vivino 4.0-4.2
Parker 86	Rankquant 2.5-3.0 · Jancis 14-15 · Vivino 3.7-4.0
Parker <85 or unrated	Rankquant ≤ 2.5 · Vivino < 3.7

Rough cross-walk for wines that receive scores from multiple sources. Applies only to wines actually rated; does not correct for inflation pressure differences between houses.

Practical consumer rules

Ignore any wine rated under 88 by a professional 100-pt source.The critic didn't think it was worth writing up highly; the lower score is often a euphemism for "ordinary".
A 90 is not "excellent". In Parker-era scoring a 90 is a competent wine, nothing more. The marketing industry has convinced consumers otherwise.
Cross-check before buying on a single score. If only one critic rates a wine, its score carries less signal. Rankquant explicitly handles this via Bayesian adjustment — thin-critic-coverage wines are pulled toward the peer-set prior.
Peer-set context is the real signal. A Parker 92 on a $25 Bordeaux is remarkable. A Parker 92 on a $200 Bordeaux is disappointing. The raw score is the same; the normalized-within-price-tier score is wildly different.
Prefer the normalized score when available.A Rankquant normalized 4.7 with published peer-set "2019 Napa Cabernet $40-$80, 213 wines" tells you more than a Wine Spectator 93 with no context.

Frequently asked questions

Is a 95 Parker score really better than a 92?+

Yes, but the gap is smaller than it looks because the effective scale compresses 15 points into 15 ranks. A 95 vs 92 is roughly the difference between top 10% and top 30% of wines rated by Parker — meaningful but not as dramatic as "95 vs 92" sounds in absolute terms.

Why rescale crowd ratings so aggressively?+

Because comparing scores across sources requires a common scale first. Vivino × 20 brings the crowd 1-5 onto a 20-100 effective range that can be set beside a 100-point professional score. The rescaling is purely mechanical; it's not a claim that a Vivino 4.3 equals a Parker 86. Note that a Rankquant wine score does not depend on this step at all — per-reviewer z-normalization is scale-free, since each reviewer is measured against their own distribution rather than against another source.

What about the 5-star "half-star" increments?+

Handled as decimals (4.5 → rescaled to 90, 4.3 → 86, etc.) before aggregation. No special treatment.

Do older Parker scores still count the same as recent Vinous scores?+

Nothing in a Rankquant number distinguishes them, because neither publication is ingested — wine scores are built from the Vivino reviewer pool, and no source or reviewer is weighted above any other in the first place. As a reader, treat the editorial continuity as real but the palate as shifted: a 2015 Parker 95 and a 2023 Vinous 95 are two different judgments wearing the same number.