EMC & RF Calculator

Conversion, Equations and Calculations for EMC & Radio testing

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EMC & RF Testing Conversions & Calculators

EMC testing and wireless radio testing use many equations, formulae and conversions. Here are some online free calculators that should make things easier.

Radiated Power & Electric Field Strength calculator

This calculator allows easy conversion of common measurement units such electric field strength to radiated power including the following:

  • dBuV/m at 3m or dBuV/m at 10m to EiRP (mW) or EiRP (dBm)
  • dBuV/m at 3m or dBuV/m at 10m to ERP (mw) or ERP (dBm)
  • EiRP (mW), EiRP (dBm), to dBuV/m at 3m or dBuV/m at 10m
  • ERP (mw) or ERP (dBm) to dBuV/m at 3m or dBuV/m at 10m
  • EiRP (mW) or EiRP (dBm) to ERP (mw) or ERP (dBm)

These conversions can be very useful when comparing FCC dBuV/m electric field strength measurements to radio standards such as AS/NZS 4268, allowing easy comparison against the limits that may be defined in terms of EiRP (mW).

Radiated Power Calculator: ERP, EIRP & dBuV/m

1. EiRP (mW) - Part 1

2. EiRP (mW) - Part 2

3. EiRP (dBm) - Part 1

4. EIRP (dBm) - Part 2

5. ERP (mW) - Part 1

6. ERP (mW) - Part 2

7. ERP (dBm) - Part 1

8. ERP (dBm) - Part 2

9. dBuV/m @ 3m - Part 1

10. dBuV/m @ 3m - Part 2

11. dBuV/m @ 10m - Part 1

12. dBuV/m @ 10m - Part 2

Radiated Power Calculator: ERP, EIRP & dBuV/m - Mobile

EiRP (mW) Conversions

EiRP (dBm) Conversions

ERP (mW) Conversions

ERP (dBm) Conversions

dBuV/m @ 3m Conversions

dBuV/m @ 10m Conversions

General RF Calculators (50Ω System)

50 Ohm system RF calculator

50Ω System - dBuV to dBm

dBuV
dBm

50Ω System - dBm to dBuV

dBm
dBuV

50Ω System - dBuA to dBm

dBuA
dBm

50Ω System - dBm to dBuA

dBm
dBuA

50Ω System - dBuV to dBuA

dBuV
dBuA

50Ω System - dBuA to dBuV

dBuA
dBuV

Antenna equations & Radiated Fields

Frequency to Wavelength, antenna factor to antenna gain and radiated field conversions.

Antenna Equations

Calculate wavelength for frequency (Free Space)

MHz
λ (m)

Far Field distance - Dipole & Log P Antenna

MHz
m

Far Field distance - Horn Antenna

MHz
m
m

Antenna Gain dBi to Antenna Factor (50 Ω system)

MHz
dBi
dB/m

Antenna Factor to Antenna Gain (dBi) (50 Ω system)

MHz
dB/m
dBi

Antenna Gain (numeric) to Antenna Factor (50 Ω system)

MHz
G
dB/m

Antenna Factor to Antenna Gain (numeric) (50 Ω system)

MHz
G
dB/m

Radiated field - dBuV/m to V/m

Free space conditions (impedance of 377 Ohms)
dBu/m
V/m

Radiated field - V/m to dBuV/m

Free space conditions (impedance of 377 Ohms)
V/m
dBuV/m

Radiated field - dBuA/m to A/m

Free space conditions (impedance of 377 Ohms)
V/m
dBuV/m

Radiated field - A/m to dBuA/m

Free space conditions (impedance of 377 Ohms)
V/m
dBuV/m
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