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Normalization, Percentile & Rank Calculator

In exams held over many shifts, raw marks are adjusted so that an easy or tough shift does not decide your result. Use the official formula or convert between percentile and rank.

Free · no login · runs on your deviceLast reviewed by NaukriZila Editorial Team

Quick answer

RRB normalizes marks with: Normalized = (Mgt − Mgq) ÷ (Mti − Miq) × (Raw − Miq) + Mgq, where Mti and Miq are the top-0.1% average and mean + standard deviation of your shift, and Mgt and Mgq are the same for all shifts. If your shift was harder than average, your normalized marks go up. NTA percentile = 100 × candidates with a score equal to or below yours ÷ total candidates in your session.

Enter all five values. Shift statistics are published by the board with the normalized marks, or estimated from mock-result analyses.
Normalized = (Mgt − Mgq) ÷ (Mti − Miq) × (Sij − Miq) + Mgq

How to use the Normalization Calculator

  1. 1Pick the calculationNormalized marks (RRB formula), percentile from rank, or rank from percentile.
  2. 2Enter the valuesYour raw marks and the shift statistics — or your rank and the number of candidates.
  3. 3Read the resultSee normalized marks with the change from raw, or your percentile / expected rank.

How each body normalizes

Normalization methods
BodyMethod
RRB (NTPC, Group D, ALP, JE)Formula based on top 0.1% average and mean + SD of each shift
SSC (CGL, CHSL, MTS, GD…)Percentile equipercentile method across shifts
NTA (JEE Main, CUET, NEET re-tests)Percentile score of each session; ranks from merged percentiles

Things to know

  • Normalized marks can be higher or lower than raw marks — it depends on your shift’s difficulty relative to all shifts.
  • Shift statistics come from the board’s normalization notice or result; estimates from coaching analyses are only approximate.
  • Percentile is not percentage: 95 percentile means you did better than or equal to 95% of candidates in your session.

Frequently Asked Questions

What is the RRB normalization formula?+

Normalized = (Mgt − Mgq) / (Mti − Miq) × (Sij − Miq) + Mgq, where Sij is raw marks, Mti/Miq are the top 0.1% average and mean + SD of the shift, and Mgt/Mgq the same across all shifts.

Can normalized marks be less than raw marks?+

Yes. If your shift was easier than the average shift, normalized marks are lower.

How is NTA percentile calculated?+

100 × number of candidates in the session with a raw score equal to or less than yours ÷ total candidates in that session.

How do I find rank from percentile?+

Expected rank ≈ (100 − percentile) × total candidates ÷ 100 + 1. Ties and category ranks change it slightly.

Does SSC use the RRB formula?+

No. SSC uses the percentile equipercentile method, which cannot be reproduced without the full score data.

Requirements differ between recruitments. Always follow the official notification of the exam you are applying for.