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RF Engineering Calculators – VSWR, Microstrip, Attenuator & More

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.

VSWR ↔ Return Loss Converter

Convert between VSWR, Return Loss (dB), Reflection Coefficient |Γ|, and Mismatch Loss...

Microstrip Calculator – FR4 Substrate

Calculate microstrip characteristic impedance Z₀, trace width W, effective permittivi...

RF Attenuator Calculator – T-Pad and Pi-Pad

Calculate T-pad and Pi-pad RF attenuator resistor values for any attenuation (dB) and...

S11 to Complex Impedance Calculator

Convert S11 (dB magnitude + phase angle) to complex impedance Z = R + jX. Interactive...

Microstrip Calculator – Rogers RO4003C Substrate

Calculate microstrip characteristic impedance Z₀, trace width W, effective permittivi...

Microstrip Calculator – Rogers RO4350B Substrate

Calculate microstrip impedance Z₀, trace width W, and quarter-wave lengths for Rogers...

Microstrip Calculator – Rogers RT/Duroid 5880

Calculate microstrip Z₀, trace width W, and quarter-wave lengths for Rogers RT/Duroid...

L-Network Impedance Matching Calculator

Calculate L-network matching component values for any source-to-load impedance transf...

Q Factor and ESR Calculator

Calculate Q factor and ESR of RF inductors and capacitors at any frequency. Estimate ...

Wavelength and Quarter-Wave Length Calculator

Calculate free-space wavelength λ, guided wavelength λg, and quarter-wave length λ/4 ...

Cascaded Noise Figure Calculator (Friis Formula)

Calculate total system noise figure for cascaded RF stages using the Friis formula. E...

dBm to Watts Converter

Convert RF power between dBm, watts, milliwatts, and dBW. Interactive calculator with...

Mismatch Loss Calculator

Calculate mismatch loss (extra insertion loss due to impedance mismatch) from VSWR, r...

Bandwidth and Q Factor Calculator

Calculate bandwidth from Q factor and center frequency, or Q from measured bandwidth....

Return Loss to Reflection Coefficient Converter

Convert between Return Loss (dB), S11 (dB), reflection coefficient |Γ|, VSWR, mismatc...

Matching Network Insertion Loss Estimator

Estimate matching network insertion loss from inductor Q, matching Q, and number of r...

Skin Depth Calculator

Calculate skin depth (δ) for copper, aluminum, silver, and gold at any RF frequency. ...

Quarter-Wave Length Calculator

Calculate quarter-wave (λ/4) and half-wave (λ/2) transmission line lengths for any fr...

Directional Coupler Coupling Factor Calculator

Calculate coupler coupling factor, through-path loss, isolation, and directivity from...

Wilkinson Power Divider Calculator

Interactive calculator for Wilkinson power divider design. Compute quarter-wave line ...

RF Link Budget Calculator

Interactive RF link budget calculator. Compute EIRP, free-space path loss, received s...

Free RF Engineering App for Android

S-parameter analysis, Smith chart, impedance matching, circuit simulation and SNP batch processing — all free on Android.

Download RF View Free on Google Play

Android 6.0+ · Free · No sign-up required