5G NR ARFCN Calculator
Convert 3GPP 5G NR-ARFCN values across all three global frequency rasters (0–100 GHz) into carrier frequencies.
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Math
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Related
Enter parameters and click Calculate to view results
Formula & Theory
0–3 GHz: F = N × 0.005 MHz; 3–24.25 GHz: F = 3000 + (N - 600000) × 0.015 MHz; 24.25–100 GHz: F = 24250.08 + (N - 2010001) × 0.06 MHzThis formula is used to calculate antenna parameters for 5g nr arfcn calculator.
Overview
Use this 5G NR-ARFCN calculator to convert Absolute Radio Frequency Channel Numbers (NR-ARFCN) into downlink/uplink carrier frequencies in MHz and GHz according to 3GPP TS 38.104 specifications.
Input Guide
Enter NR-ARFCN (N_REF) exactly in the units shown by this 5g nr arfcn. Check the operating band, unit prefix, and decimal position before calculating; these are the inputs used by the formula.
- NR-ARFCN (N_REF).
Output Guide
The results describe the calculated 5g nr arfcn values for the inputs you entered. Check each value against the available space, selected components, feed system, and operating conditions before making a final design decision.
How This Calculator Works
The 5G NR ARFCN uses 0–3 GHz: F = N × 0.005 MHz; 3–24.25 GHz: F = 3000 + (N - 600000) × 0.015 MHz; 24.25–100 GHz: F = 24250.08 + (N - 2010001) × 0.06 MHz. Supply NR-ARFCN (N_REF) in the displayed units, then use the calculated values as the first engineering target for this 5g nr design or analysis.
Design Notes
3GPP TS 38.104 defines three distinct global frequency rasters: a 5 kHz step for sub-3 GHz (FR1), a 15 kHz step for 3 GHz to 24.25 GHz (FR1 C-Band / Mid-Band), and a 60 kHz step for 24.25 GHz to 100 GHz (FR2 mmWave).
Build and Tuning Notes
Ensure you distinguish between the channel raster (NR-ARFCN) and the synchronization raster (GSCN). NR-ARFCN identifies the center carrier frequency, whereas GSCN identifies SS/PBCH block (SSB) locations for cell search.
Frequently Asked Questions
What is the maximum valid NR-ARFCN value in 3GPP TS 38.104?
The valid NR-ARFCN range is 0 to 3,279,165, covering frequencies from 0 MHz up to 100 GHz.
What NR-ARFCN range corresponds to C-band (n77 / n78)?
C-band (3.3 GHz to 4.2 GHz) falls in the 15 kHz raster step range, corresponding to NR-ARFCN values between 620,000 and 680,000.
What is the difference between FR1 and FR2 in 5G NR?
FR1 (Frequency Range 1) spans 410 MHz to 7,125 MHz (Sub-6 GHz). FR2 (Frequency Range 2) spans 24,250 MHz to 52,600+ MHz (mmWave).
Alex Warren
B.Sc. in Electrical & Electronic Engineering (EEE)
Alex specialises in antenna design and wave propagation. His expertise helps ensure these calculators present practical RF concepts, useful design estimates, and clear engineering guidance for students, HAM operators, and wireless professionals.