Rating Improvement Requirement Calculator

Work out rating improvement requirement instantly with clear inputs, formula shown and shareable results.

About Rating Improvement Requirement Calculator

Raising an average requires new reviews rated above the target, and the number needed grows with both the existing review count and the size of the gap. New reviews rated at or below the target can never reach it.

Formula

Reviews needed

n = count × (target - current) / (new rating - target)

Worked example

With the default values below, Rating Improvement Requirement Calculator returns New Reviews Needed of 351. Change any input above and every figure here is recalculated in your browser.

Inputs used

Current Average Ratingaccepts 1–5: 3.8
Number Of Existing Reviewsaccepts 1–10,000,000: 250
Target Average Ratingaccepts 1–5: 4.5
Rating Of New Reviewsaccepts 1–5: 5

Results

New Reviews Needed: 351
Rating Gap To Close: 0.700
Total Reviews Once Achieved: 601
Assessment: Achievable at this new review rating

Step by step

1Values used
2Reviews needed
3New Reviews Needed= 351
4Rating Gap To Close= 0.700
5Total Reviews Once Achieved= 601
6Assessment= Achievable at this new review rating

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.

Frequently Asked Questions

Why can the target be unreachable?

If new reviews average at or below the target, the blended average converges towards them and never crosses it.

Is it faster to remove bad reviews?

Only fraudulent or policy-breaching ones can be removed. Volume of genuine positive reviews is the reliable route.