G2 Rating Calculator
Enter your current G2 rating, review count, and target rating to see how many new 5-star reviews it takes to get there.
New G2 reviews needed to go from 3.8★ to 4.5★
G2 uses a simple average, so this estimate is exact. See how G2's rating actually works or G2 review management.
What actually moves each G2 number
The star rating on a G2 product profile is a straightforward calculation: G2’s own documentation states it is calculated by aggregating reviewers’ answers to the "Likelihood to Recommend" question on a 1–10 scale, dividing the average in half, and rounding to the nearest half star. There’s no hidden weighting in that number — it moves in a way vendors can reason about directly from their reviews.
The G2 Score is a different, heavier calculation, and it’s what actually determines placement on G2’s category Grid — not the star rating. G2 Score is the average of two proprietary components: a Satisfaction Score (built from review answers to product-attribute questions, review volume, review quality, and recency — reviews lose weight over time on roughly a -3%-per-month decay) and a Market Presence Score (15 metrics blending G2’s own review data with third-party sources like employee counts, funding data, and web traffic). A vendor can improve its star rating without materially moving its Grid position, or vice versa, because the two are pulling on different inputs.
- Star rating — a direct average of "Likelihood to Recommend" scores (1–10) across published reviews, halved and rounded to the nearest half star.
- G2 Score (Grid placement) — the average of a Satisfaction Score (product-attribute answers, review volume, review quality, recency-weighted with decay) and a Market Presence Score (15 metrics from G2 and third-party data).
- Recency — reviews lose influence on the Satisfaction Score over time, so a steady, current flow of reviews outweighs a large batch collected once and never repeated.
- Moderation — every review is verified (LinkedIn, business email, or personal email plus screenshot) and checked against G2’s community guidelines before it counts toward either number.
Frequently asked questions
How accurate is this calculator for G2?
G2's rating is a simple average, so for a given current rating, review count and target, the number this calculator gives you is exact — not an estimate.
Does review volume alone move my G2 rating?
Star rating — a direct average of "Likelihood to Recommend" scores (1–10) across published reviews, halved and rounded to the nearest half star.
Where can I see more on how G2's rating works?
See our full breakdown of G2's rating mechanics, or go straight to G2 review management if you'd rather have this handled for you.