LTE EARFCN Calculator
Convert channel numbers and frequencies. Find LTE bands, uplink and downlink details in one place.
Take the eARFCN Calculator with You
Download the eARFCN Calculator app for Android and quickly convert LTE EARFCN to frequency and frequency to EARFCN across LTE bands.
What is an LTE EARFCN?
EARFCN stands for E-UTRA Absolute Radio Frequency Channel Number. It is the channel number used to describe an LTE carrier frequency. Engineers use it when configuring cells, checking drive-test logs and comparing network frequencies.
A band groups a range of radio frequencies. Each band has its own starting frequency and EARFCN offset. That is why the calculator checks both the channel number and the selected link direction.
How to use this calculator
- Choose EARFCN → Frequency or Frequency → EARFCN.
- Select an LTE band, or use Auto-detect to list every match.
- Choose downlink or uplink, enter your value, and press Calculate.
- Review the frequency, channel number, band range and relevant notes. Copy the result or download all matches as CSV.
When several bands cover the same frequency, auto-detect shows multiple answers. Select the band used by your network to narrow the result.
EARFCN to frequency formula
EARFCN = Noffset + 10 × (Frequency in MHz − Flow)
The calculator uses the appropriate downlink or uplink starting frequency and offset. One channel-number step changes the mapped frequency by 0.1 MHz (100 kHz). A frequency between raster points has no exact integer EARFCN; this calculator rejects it instead of silently rounding.
Example: Band 3 EARFCN 1650
Band 3 downlink starts at 1805 MHz with offset 1200. The calculation is 1805 + 0.1 × (1650 − 1200) = 1850 MHz. Reversing the calculation gives 1200 + 10 × (1850 − 1805) = 1650. The corresponding conventional Band 3 uplink channel is 19650 at 1755 MHz.
FDD, TDD and downlink-only bands
- FDD: uplink and downlink occupy separate frequency ranges. Band 7 is FDD.
- TDD: uplink and downlink share a frequency range and transmit at different times. Bands 40 and 41 are examples.
- SDL: supplemental downlink has no uplink channel in that band and requires an appropriate carrier-aggregation configuration.
- Special use: Band 47 is associated with V2X; Bands 107 and 108 are LTE-based terrestrial broadcast bands. These are identified separately from ordinary mobile broadband use.
LTE EARFCN band table
This reference includes 71 band entries: all entries in ETSI TS 136 104 V18.8.0 Table 5.7.3-1, plus Band 47 from TS 36.101. Missing band numbers are not filled with invented ranges. Frequency columns show the first and last mapped raster frequencies, not the usable centre-frequency limits for a particular carrier bandwidth.
| Band | Mode | DL MHz | DL EARFCN | UL MHz | UL EARFCN |
|---|---|---|---|---|---|
| B1 | FDD | 2110–2169.9 | 0–599 | 1920–1979.9 | 18000–18599 |
| B2 | FDD | 1930–1989.9 | 600–1199 | 1850–1909.9 | 18600–19199 |
| B3 | FDD | 1805–1879.9 | 1200–1949 | 1710–1784.9 | 19200–19949 |
| B4 | FDD | 2110–2154.9 | 1950–2399 | 1710–1754.9 | 19950–20399 |
| B5 | FDD | 869–893.9 | 2400–2649 | 824–848.9 | 20400–20649 |
| B6 | FDD | 875–884.9 | 2650–2749 | 830–839.9 | 20650–20749 |
| B7 | FDD | 2620–2689.9 | 2750–3449 | 2500–2569.9 | 20750–21449 |
| B8 | FDD | 925–959.9 | 3450–3799 | 880–914.9 | 21450–21799 |
| B9 | FDD | 1844.9–1879.8 | 3800–4149 | 1749.9–1784.8 | 21800–22149 |
| B10 | FDD | 2110–2169.9 | 4150–4749 | 1710–1769.9 | 22150–22749 |
| B11 | FDD | 1475.9–1495.8 | 4750–4949 | 1427.9–1447.8 | 22750–22949 |
| B12 | FDD | 729–745.9 | 5010–5179 | 699–715.9 | 23010–23179 |
| B13 | FDD | 746–755.9 | 5180–5279 | 777–786.9 | 23180–23279 |
| B14 | FDD | 758–767.9 | 5280–5379 | 788–797.9 | 23280–23379 |
| B17 | FDD | 734–745.9 | 5730–5849 | 704–715.9 | 23730–23849 |
| B18 | FDD | 860–874.9 | 5850–5999 | 815–829.9 | 23850–23999 |
| B19 | FDD | 875–889.9 | 6000–6149 | 830–844.9 | 24000–24149 |
| B20 | FDD | 791–820.9 | 6150–6449 | 832–861.9 | 24150–24449 |
| B21 | FDD | 1495.9–1510.8 | 6450–6599 | 1447.9–1462.8 | 24450–24599 |
| B22 | FDD | 3510–3589.9 | 6600–7399 | 3410–3489.9 | 24600–25399 |
| B23 | FDD | 2180–2199.9 | 7500–7699 | 2000–2019.9 | 25500–25699 |
| B24 | FDD | 1525–1558.9 | 7700–8039 | 1626.5–1660.4 | 25700–26039 |
| B25 | FDD | 1930–1994.9 | 8040–8689 | 1850–1914.9 | 26040–26689 |
| B26 | FDD | 859–893.9 | 8690–9039 | 814–848.9 | 26690–27039 |
| B27 | FDD | 852–868.9 | 9040–9209 | 807–823.9 | 27040–27209 |
| B28 | FDD | 758–802.9 | 9210–9659 | 703–747.9 | 27210–27659 |
| B29 | SDL | 717–727.9 | 9660–9769 | — | — |
| B30 | FDD | 2350–2359.9 | 9770–9869 | 2305–2314.9 | 27660–27759 |
| B31 | FDD | 462.5–467.4 | 9870–9919 | 452.5–457.4 | 27760–27809 |
| B32 | SDL | 1452–1495.9 | 9920–10359 | — | — |
| B33 | TDD | 1900–1919.9 | 36000–36199 | 1900–1919.9 | 36000–36199 |
| B34 | TDD | 2010–2024.9 | 36200–36349 | 2010–2024.9 | 36200–36349 |
| B35 | TDD | 1850–1909.9 | 36350–36949 | 1850–1909.9 | 36350–36949 |
| B36 | TDD | 1930–1989.9 | 36950–37549 | 1930–1989.9 | 36950–37549 |
| B37 | TDD | 1910–1929.9 | 37550–37749 | 1910–1929.9 | 37550–37749 |
| B38 | TDD | 2570–2619.9 | 37750–38249 | 2570–2619.9 | 37750–38249 |
| B39 | TDD | 1880–1919.9 | 38250–38649 | 1880–1919.9 | 38250–38649 |
| B40 | TDD | 2300–2399.9 | 38650–39649 | 2300–2399.9 | 38650–39649 |
| B41 | TDD | 2496–2689.9 | 39650–41589 | 2496–2689.9 | 39650–41589 |
| B42 | TDD | 3400–3599.9 | 41590–43589 | 3400–3599.9 | 41590–43589 |
| B43 | TDD | 3600–3799.9 | 43590–45589 | 3600–3799.9 | 43590–45589 |
| B44 | TDD | 703–802.9 | 45590–46589 | 703–802.9 | 45590–46589 |
| B45 | TDD | 1447–1466.9 | 46590–46789 | 1447–1466.9 | 46590–46789 |
| B46 | TDD | 5150–5924.9 | 46790–54539 | 5150–5924.9 | 46790–54539 |
| B47 | TDD | 5855–5924.9 | 54540–55239 | 5855–5924.9 | 54540–55239 |
| B48 | TDD | 3550–3699.9 | 55240–56739 | 3550–3699.9 | 55240–56739 |
| B49 | TDD | 3550–3699.9 | 56740–58239 | 3550–3699.9 | 56740–58239 |
| B50 | TDD | 1432–1516.9 | 58240–59089 | 1432–1516.9 | 58240–59089 |
| B51 | TDD | 1427–1431.9 | 59090–59139 | 1427–1431.9 | 59090–59139 |
| B52 | TDD | 3300–3399.9 | 59140–60139 | 3300–3399.9 | 59140–60139 |
| B53 | TDD | 2483.5–2494.9 | 60140–60254 | 2483.5–2494.9 | 60140–60254 |
| B54 | TDD | 1670–1674.9 | 60255–60304 | 1670–1674.9 | 60255–60304 |
| B65 | FDD | 2110–2199.9 | 65536–66435 | 1920–2009.9 | 131072–131971 |
| B66 | FDD | 2110–2199.9 | 66436–67335 | 1710–1779.9 | 131972–132671 |
| B67 | SDL | 738–757.9 | 67336–67535 | — | — |
| B68 | FDD | 753–782.9 | 67536–67835 | 698–727.9 | 132672–132971 |
| B69 | SDL | 2570–2619.9 | 67836–68335 | — | — |
| B70 | FDD | 1995–2019.9 | 68336–68585 | 1695–1709.9 | 132972–133121 |
| B71 | FDD | 617–651.9 | 68586–68935 | 663–697.9 | 133122–133471 |
| B72 | FDD | 461–465.9 | 68936–68985 | 451–455.9 | 133472–133521 |
| B73 | FDD | 460–464.9 | 68986–69035 | 450–454.9 | 133522–133571 |
| B74 | FDD | 1475–1517.9 | 69036–69465 | 1427–1469.9 | 133572–134001 |
| B75 | SDL | 1432–1516.9 | 69466–70315 | — | — |
| B76 | SDL | 1427–1431.9 | 70316–70365 | — | — |
| B85 | FDD | 728–745.9 | 70366–70545 | 698–715.9 | 134002–134181 |
| B87 | FDD | 420–424.9 | 70546–70595 | 410–414.9 | 134182–134231 |
| B88 | FDD | 422–426.9 | 70596–70645 | 412–416.9 | 134232–134281 |
| B103 | FDD | 757–757.9 | 70646–70655 | 787–787.9 | 134282–134291 |
| B106 | FDD | 935–939.9 | 70656–70705 | 896–900.9 | 134292–134341 |
| B107 | Broadcast | 612–651.9 | 70706–71105 | — | — |
| B108 | Broadcast | 470–697.9 | 71106–73385 | — | — |
71 bands shown.
Channel mapping versus a usable carrier
A valid EARFCN mapping does not automatically make a deployable channel. The carrier bandwidth must fit within the operating band. Band-specific bandwidths, carrier aggregation, equipment capabilities and local spectrum permissions also matter.
Band 46 has additional channel restrictions. Band 66 has a downlink extension without a same-offset uplink channel. Band 70 supports different duplex-separation arrangements, so this tool does not guess its paired channel. Band 106 has a specific 3 MHz channel restriction. Band 103 and other narrow-band uses require the relevant NB-IoT rules; NB-IoT sub-raster offsets are outside this converter's scope.
FAQ on eARFCN Calculator
EARFCN identifies LTE channels. GSM ARFCN and 5G NR-ARFCN use different mapping rules and should not be entered into this LTE converter.
Yes. LTE bands can overlap. Auto-detect returns every matching band for the selected uplink or downlink direction.
TDD bands share a frequency range and channel numbering. FDD bands use separate uplink and downlink offsets. Supplemental downlink bands have no uplink channel.
No. Channel bandwidth, operating-band edges, special channel restrictions, equipment capabilities and spectrum permissions also need to be checked.
No. It calculates the LTE 100 kHz EARFCN mapping. NB-IoT uses additional offset rules that are outside this converter’s scope.
Technical references
Channel mappings and band notes: ETSI TS 136 104 V18.8.0, section 5.7.3 (February 2026). Band 47 mapping: ETSI TS 136 101 V16.23.0, section 5.7.3.