Free RF & Cellular Engineering Tools
Small, accurate calculators built for RF engineers, telecom technicians and students. No sign-up, no ads, results computed instantly in your browser.
LTE & 5G Frequency Calculator
Convert EARFCN and NR-ARFCN to frequency, identify bands, find compatible channel numbers.
Open toolLTE EARFCN Calculator
EARFCN to frequency and back, with downlink/uplink and band details.
Open tool5G NR-ARFCN Calculator
NR-ARFCN to frequency and back, using the 3GPP global frequency raster.
Open toolLTE Band Finder
Enter a frequency, see every compatible LTE band.
Open tool5G NR Band Finder
Enter a frequency, see every compatible 5G NR band.
Open toolEIRP Calculator
TX power, antenna gain and losses to Effective Isotropic Radiated Power.
Open toolVSWR Calculator
VSWR, return loss, reflection coefficient and mismatch loss, or from a load impedance.
Open toolLink Budget Calculator
Received power and link margin from TX power, gains, losses and path loss, with FSPL.
Open tooldBm to Watts Converter
Convert RF power between dBm, Watts, milliwatts and kilowatts, both ways.
Open toolRSRP / RSRQ / SINR Analyzer
Rate LTE/5G signal readings as Excellent, Good, Fair or Poor.
Open toolAntenna Downtilt Calculator
Required tilt from height and target distance, plus main-lobe footprint.
Open toolRFScan Analyzer
Open RFScan and RFCAP captures in the browser: spectrum, FFT, waterfall and antenna-to-antenna comparison.
Open toolRF Tools Pack
EARFCN/NR-ARFCN to frequency, dBm to watts, Fresnel zone clearance, and azimuth between two coordinates in one page.
Open toolRelated RF tools
A question about this calculator, or a band missing?
Write to me directly, whether it's a data correction, a feature request, or a new tool idea.