Calculators

Amateur Radio RF Safety Calculator - University of Texas Amateur Radio Club RF-Calculator. This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations

Coil Inductance Calculator - Calculate the inductance of a single-layer, air-core coil.

Coil Inductance Calculator - Approximate Air Coil Inductance Calculator

Amateur Radio RF Safety Calculator - University of Texas Amateur Radio Club RF-Calculator. This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations

Capacitor kVAr calculator  ^updated - Online calculator to determine the Capacitor kVAr required to improve the power factor from cos 01 to cos 02 with your present kW load

Coil Inductance Calculator - Approximate Air Coil Inductance Calculator

Coil Inductance Calculator - Calculate the inductance of a single-layer, air-core coil.

DB Watts EIRP Calculator - Online calculator, to convert dbWatts to Watts and vice-versa, or ERP and EIRP by G4URH

dbm Calculator - The dbm online calculator and reference table for 50 Ohm

Electrical Calculators Online - Electrical and electronics online calculators by Calculatoredge.com

Electronic calculator - Some simple electronics calculator in javascript

LCF Calculator - LCF online Calculator, calculate relation between Frequency Capacitance Inductance and Reactance

mini dB Calculator - dB-Calculation for the experimenting radio amateur.

Mini Ring Core Calculator - The easy way to calculate toroid cores.

Online Calculators for Radio & Electronic Design - Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.

Resistor calculator - This resistor calculation tool shows which combinations of two resistors, series or parallel, gives a match better than the closest standard value.

Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

Single-layer Coil Inductance and Q Calculator - This calculator ask as input diameter, lenght turn and frequencu and will return L and Q

T-Pad / H-Pad Resistance Calculator - This calculator is designed to give resistor values for unbalanced T-pads, and for balanced H-pads.

Variometer Design - Online variometer calculator by IN3OTD