3GPP Tools

Browser-based utilities for 5G NR engineers. Everything runs locally in your browser — nothing you paste is uploaded.

NR Explorer

Numerology, NR-ARFCN/GSCN, SSB bursts, CORESET#0 / searchSpaceZero, TDD patterns and BWP RIVs, visualised.

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DCI Decoder

Decode DCI 0_0 / 0_1 / 1_0 / 1_1 payloads per TS 38.212 §7.3 for a given RRC config.

Coming soon

MAC PDU Decoder

Parse MAC subheaders and CEs — BSR, PHR, TA command, C-RNTI — per TS 38.321.

Coming soon

ASN.1 Decoder

Decode NR RRC, NAS and NGAP messages from hex to readable form.

Coming soon

NR Trivia

Test yourself on the obscure corners of the NR specs, with references for every answer.

Coming soon