Free online RF calculators: VSWR/return-loss converter, microstrip impedance, T-pad and Pi-pad attenuator, L-network matching, Q factor, wavelength, and noise figure cascade.
Convert between VSWR, Return Loss (dB), Reflection Coefficient |Γ|, and Mismatch Loss...
Calculate microstrip characteristic impedance Z₀, trace width W, effective permittivi...
Calculate T-pad and Pi-pad RF attenuator resistor values for any attenuation (dB) and...
Convert S11 (dB magnitude + phase angle) to complex impedance Z = R + jX. Interactive...
Calculate microstrip characteristic impedance Z₀, trace width W, effective permittivi...
Calculate microstrip impedance Z₀, trace width W, and quarter-wave lengths for Rogers...
Calculate microstrip Z₀, trace width W, and quarter-wave lengths for Rogers RT/Duroid...
Calculate L-network matching component values for any source-to-load impedance transf...
Calculate Q factor and ESR of RF inductors and capacitors at any frequency. Estimate ...
Calculate free-space wavelength λ, guided wavelength λg, and quarter-wave length λ/4 ...
Calculate total system noise figure for cascaded RF stages using the Friis formula. E...
Convert RF power between dBm, watts, milliwatts, and dBW. Interactive calculator with...
Calculate mismatch loss (extra insertion loss due to impedance mismatch) from VSWR, r...
Calculate bandwidth from Q factor and center frequency, or Q from measured bandwidth....
Convert between Return Loss (dB), S11 (dB), reflection coefficient |Γ|, VSWR, mismatc...
Estimate matching network insertion loss from inductor Q, matching Q, and number of r...
Calculate skin depth (δ) for copper, aluminum, silver, and gold at any RF frequency. ...
Calculate quarter-wave (λ/4) and half-wave (λ/2) transmission line lengths for any fr...
Calculate coupler coupling factor, through-path loss, isolation, and directivity from...
Interactive calculator for Wilkinson power divider design. Compute quarter-wave line ...
Interactive RF link budget calculator. Compute EIRP, free-space path loss, received s...
S-parameter analysis, Smith chart, impedance matching, circuit simulation and SNP batch processing — all free on Android.
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