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Rating models

Positive review percentage calculator

Find the percentage of reviews that recommend a product.

Model estimate, not a platform prediction. Results may differ from real service ratings. Platforms can use unpublished weights, moderation, eligibility rules and rounding. This calculator applies only the formula below.

Your inputs

Reset example
Positive review percentage · model result
90.000%

90 positive out of 100 reviews. Observed positive rate: 90.00%.

Results are rounded to three decimal places.

Comparing products with different numbers of reviews? See how Wilson accounts for sample size.

How it works

Positive ÷ (positive + negative) × 100

Use binary positive and negative reviews. Steam uses the percentage of positive reviews, but its eligibility rules can change which reviews count. This calculator does not apply platform filters.

Steam: user reviews

Results update as you type. Calculations run in your browser; submitting with JavaScript disabled sends the numbers to the server to calculate the result.

Reach a target

Minimum additional positive reviews. Existing negative reviews stay unchanged. Target refers to this method’s score, not a displayed star rating.

100

additional reviews needed

Simulate new ratings

90.909%

100 positive out of 110 reviews. Observed positive rate: 90.91%.

Calculation URLs contain the submitted numbers. Anyone with the URL can view them; opening it sends them to the server. Avoid sharing confidential figures. Privacy details.

Other rating methods