Interactive tool
Calculate the NDA written-examination score for Mathematics and GAT
In short
The NDA written examination has two papers: Mathematics, with 120 questions worth 2.5 marks each, and the General Ability Test, with 150 questions worth 4 marks each. UPSC deducts one third of a question's marks for a wrong answer. Enter your response counts for each paper to calculate the written score out of 900.
Mathematics counts must add up to 120 and GAT counts to 150. Penalties are held at full precision internally and displayed to two decimal places.
Your calculated NDA written-examination score
This calculates the written-examination score only. It does not include SSB interview marks and does not predict merit, selection or a cut-off.
Formula used
NDA_2026 · verified for 2026 · UPSC — official NDA & NA examination notification · last verified 15 September 2026. The approximate values −0.83 and −1.33 are shown for explanation only and are never used in the calculation.
Configuration version NDA_2026. The approximate values 0.83 and 1.33 are shown for explanation only; the calculation itself uses the exact fractions.
Penalties are never rounded inside the calculation. Only the displayed figures are rounded to two decimal places.
mathScore = (correctMath × 2.5) − (wrongMath × (2.5 ÷ 3)), with unanswered questions scoring 0 and correctMath + wrongMath + unansweredMath = 120.
gatScore = (correctGat × 4) − (wrongGat × (4 ÷ 3)), with correctGat + wrongGat + unansweredGat = 150. The written score is mathScore + gatScore, out of a maximum of 900.
1. Enter your Mathematics correct, wrong and unanswered counts so they total 120.
2. Enter your GAT correct, wrong and unanswered counts so they total 150.
3. Read each paper's marks and the combined written total, then copy or share the result.
Mathematics: 80 × 2.5 = 200 positive marks, and 20 wrong answers cost 20 × 0.8333… = 16.666…, giving 183.33 as displayed.
GAT: 100 × 4 = 400 positive marks, and 30 wrong answers cost 30 × 1.3333… = 40, giving 360. The written total displayed is 543.33.
The result is your written-examination marks out of 900 under the official penalty rule. It is not a merit position and it excludes the SSB interview stage entirely.
Because the penalty is a fraction, exact totals often carry recurring decimals. The calculator keeps that precision internally so repeated additions do not drift.
Configuration version NDA_2026, verified against the UPSC NDA notification.
It assumes the current UPSC NDA written structure of 120 Mathematics questions at 2.5 marks and 150 GAT questions at 4 marks, with one third of the question's marks deducted for a wrong answer.
It assumes your counts come from your own response sheet checked against the official answer key. Always confirm the structure and penalty in the UPSC notification for your examination cycle.
The written structure and the one-third wrong-answer penalty come from the official UPSC NDA notification. Coaching sites are not used as authority.
