dBm to mW conversion calculator

Enter the amount of power in mW in the range 0 to 20000. Or the amount of power in dBm from -100 to 100.

Amount of power in mW			Result in dBm
Amount in dBm			Result in mW

Convert inches (us) to mm

Online converter to calculate inches (us) to mm, also calculate a volume in inches³, in mm³

Wavelength Calculator of εR

Enter the frequency F in GHz and the dielectric constant εR

Reactance Calculator

Inductive Reactance Calculator

Enter the frequency F in GHz and the value of inductance L in nH

X_L = 2π * F * L

F (GHz) = L (nH) =

X_L(Ω) = 0

Enter the frequency F in GHz and reactance value X_L in ohms

L = X_L / (2π * F)

X_L(Ω) = F (GHz) =

L (nH) = 0

Enter the frequency F in GHz and the inductance value of C in pF

X_C = 1000 / (2π * F * C)

С (pF) = F (GHz) =

X_C(Ω)= 0

Enter the frequency F in GHz and reactance value X_С in ohms

X_C = 1000 / (2π * F * C)

X_C(Ω) = F (GHz) =

С (pF) = 0

Attenuators Calculator

Tee Attenuator Calculator

Enter the attenuation in dB and the resistance value Z₀ in ohms

R1 = Z₀ * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1))

R2 = 2 * Z₀ * (10 ^ (dB / 20) / (10 ^ (dB / 10) - 1))

dB = Z₀(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Pi Attenuator Calculator

Enter the attenuation in dB and the resistance value Z₀ in ohms

R1 = Z₀ * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1))

R2 = (Z₀/2) * (10 ^ (dB / 10) - 1) / (10 ^ (dB / 20))

dB = Z₀(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Bridged Tee Attenuator Calculator

Enter the attenuation in dB and the resistance value Z₀ in ohms

R1 = Z₀ * (10 ^ (dB / 20) - 1)

R2 = Z₀ / (10 ^ (dB / 20) - 1)

dB = Z₀(Ω) =

R1(Ω) = 0      R2(Ω) = 0

Reflection Attenuator Calculator

Enter the attenuation in dB and the resistance value Z₀ in ohms

R1 = Z₀ * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1)) for R1 < Z_o

R1 = Z₀ * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1)) for R1 > Z_o

dB = Z₀(Ω) =

R1 < Z₀(Ω) = 0      R2 > Z₀(Ω) = 0

Balanced Attenuator Calculator

Enter the attenuation in dB and the resistance value Z₀ in ohms

R1 = Z₀ * (1 / (10 ^ (dB / 20) - 1) )

dB = Z₀(Ω) =

R1(Ω) = 0