The Toolbox — Calculators
RF, Wireless & Radar
VSWR, coax loss, ERP, path loss, link budget, FM deviation, noise figure, radar range, and PRF/PRI calculators.
VSWR Calculator
Calculate Standing Wave Ratio from forward and reflected power.
Wavelength Calculator
Calculate full, half, and quarter wavelengths from frequency.
dB Converter
Convert between power ratios and decibels.
Coax Loss Calculator
Calculate signal loss through coaxial cable by type, frequency, and length.
ERP Calculator
Calculate Effective Radiated Power from transmitter power, antenna gain, and system losses.
Free Space Path Loss Calculator
Calculate signal attenuation over distance in free space. Optionally calculate received signal power.
Optional — Calculate Received Power
Link Budget Calculator
Calculate received signal power and link margin for a radio communication path.
Enter receiver sensitivity to calculate link margin
FM Deviation Calculator
Calculate modulation index, deviation ratio, or FM bandwidth using Carson's Rule.
Noise Figure Calculator
Calculate cascaded system noise figure using the Friis formula, or derive NF from SNR measurements.
| Stage | Noise Figure (dB) | Gain (dB) | |
|---|---|---|---|
RADAR Range Calculator
Calculate maximum unambiguous range, minimum range, or pulse repetition interval.
| Range Setting | Pulse Width | PRF |
|---|---|---|
| 1.5 nm | 0.05 μs | 2,000 pps |
| 6 nm | 0.25 μs | 1,000 pps |
| 25 nm | 1.0 μs | 500 pps |
| 48 nm | 1.0 μs | 500 pps |
PRF / PRI Converter
Convert between Pulse Repetition Frequency and Pulse Repetition Interval. Optionally calculate duty cycle and maximum range.
Enter pulse width to calculate duty cycle