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Free tools

Free CSIR NET calculators

No sign-up, no cost — every tool here computes on your device and shows its working.

Score calculator

Your CSIR NET score under the real marking scheme, including the per-part attempt limits.

Matrix calculator

Determinant, rank, trace, transpose and eigenvalues, up to 4×4, with every step shown.

Series convergence tester

Ratio test, root comparison and the p-series rule, applied to a series you choose the shape of.