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149 tools
This calculator computes any of the values in the half-life formula given the rest values. It also converts between half-life, mean lifetime, decay constant.
Convert frequency units instantly with this free universal frequency converter. Includes reference tables, applications in electronics and music, and bidirectional conversion.
The free space path loss calculator allows you to predict the strength of a radio frequency signal emitted by an antenna at any given distance.
The cool Fresnel zone calculator helps you determine the first Fresnel zone so you can keep your signal transmission as strong as possible. It also determines the other Fresnel zones, if you need them.
The noise figure calculator takes the signal-to-noise ratio (SNR) at input and output to calculate the noise figure value in decibels.
Our pi attenuator calculator is perfect if you want to build an attenuator and don't know how many ohms to use in your resistors.
Convert your RF units using Omni's RF unit converter. Peak voltage to voltage RMS, power RMS to dBmW, and many more!
The skin depth calculator allows you to determine the skin effect in conductors for any signal frequency.
The beat frequency calculator is your one-stop tool to calculate the beat frequency of two waves.
Use the resonant frequency calculator to check out the resonant frequency in an LC circuit.
Learn the relationship between wavelength and frequency with this wavelength calculator.
Our radioactive decay calculator will help you understand what radioactive decay is and how it is related to the activity of a substance.
Calculate RF power density and electric field strength at distance. FCC/ICNIRP safety compliance checking.
Calculate balanced attenuator values for RF circuits. Design H-pad and O-pad attenuators with proper impedance matching. Free online RF calculator.
Calculate your calculation mode rf with our free online tool. Get accurate results instantly. No signup required.
Calculate your cavity resonance rf with our free online tool. Get accurate results instantly. No signup required.
Calculate your circular waveguide rf with our free online tool. Get accurate results instantly. No signup required.
Calculate your coax impedance with our free online tool. Get accurate results instantly. No signup required.
Calculate your common power & voltage ratios rf with our free online tool. Get accurate results instantly. No signup required.
Calculate your conical horn gain rf with our free online tool. Get accurate results instantly. No signup required.
Calculate dipole antenna lengths for half-wave, full-wave, and quarter-wave configurations. Includes velocity factor adjustments and common ham radio bands.
Calculate Effective Isotropic Radiated Power from transmitter power, cable loss, and antenna gain. FCC/ETSI compliance checking.
Calculate your friis with our free online tool. Get accurate results instantly. No signup required.
Calculate your line of sight with our free online tool. Get accurate results instantly. No signup required.