Methodology: How JEEInfo Predictors & Data Work

This page explains the data and calculations behind JEEInfo’s tools and tables, so you can judge how much to rely on them.

JoSAA cutoff data

Source: opening and closing ranks published by JoSAA at josaa.nic.in, for every round of every year we list.
Ranks: IIT seats use JEE Advanced ranks; NIT, IIIT and GFTI seats use JEE Main ranks. OPEN seats use the Common Rank List (CRL); EWS, OBC-NCL, SC, ST and PwD seats use the corresponding category rank. B.Arch and B.Planning seats use JEE Main Paper 2 ranks and are excluded from Paper 1 comparisons.
“P” ranks are preparatory-course ranks for PwD candidates and are shown but not used in predictions.

JoSAA data on JEEInfo: 2024, 2025, 2026 (all rounds), from josaa.nic.in.

Compares your rank with the final-round closing rank of the latest completed JoSAA year for every seat you are eligible for: category, PwD status, gender pool (female candidates also compete for female-only supernumerary seats) and quota (All India, Home State, Other State, and the Goa, Jammu & Kashmir and Ladakh quotas).
Home State is matched to the state where the institute is located. A few institutes define home state differently; check the JoSAA business rules for your case.
Chance bands: High when your rank is within 80% of the closing rank; Good when it is at or better than the closing rank; Borderline when it is up to 15% worse.

Marks to percentile: built from published shift-wise marks vs percentile data for all 18 JEE Main 2026 shifts. For each percentile we take the spread of marks across shifts: easy = upper quartile to maximum, moderate = middle half, tough = minimum to lower quartile. Values between anchor points are interpolated. Rows below 90 percentile are estimates.
Percentile to rank: rank ≈ (100 − percentile) × total candidates ÷ 100, using about 15.5 lakh unique JEE Main 2026 candidates.
Limits: estimates are less reliable at the extremes and in years when paper difficulty or candidate numbers change sharply. Your official rank comes only from NTA.

October 2026: JoSAA 2024–2026 data loaded; marks vs percentile model rebuilt from 2026 shift-wise data; B.Arch/B.Planning separated from Paper 1 predictions.