Unit Conversion Calculators
17 free calculators with formulas and worked examples.
Frequency/wavelength, dBm/Watts, temperature, AWG wire gauge, capacitor codes, and unit converters for inductance, voltage, current, energy, data rate, and more.
Frequency ↔ Wavelength
Convert frequency to wavelength instantly: 150 MHz = 2.0 m, 2.4 GHz = 12.5 cm, 5.8 GHz = 5.2 cm. Calculates full, half, and quarter wavelengths for any medium — antenna design, coax, and RF planning.
dBm ↔ Watts
Instant dBm ↔ watts conversion: 0 dBm = 1 mW, 10 dBm = 10 mW, 20 dBm = 100 mW, 30 dBm = 1 W. Also converts dBW, dBμV, and RMS volts for 50 Ω RF systems.
Temperature Converter
Convert temperature between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur scales. Useful for thermal analysis, datasheet comparison, and engineering calculations.
AWG Wire Gauge
Convert AWG wire gauge to diameter (mm/inches), cross-sectional area (mm²), resistance per meter, and approximate current carrying capacity.
Capacitor Code
Decode 3-digit capacitor code (e.g., 104 = 100nF) to capacitance in pF, nF, and μF. Works with ceramic, film, and tantalum capacitor markings.
Inductance Converter
Convert inductance between henries, millihenries, microhenries, nanohenries, and picohenries.
Capacitance Converter
Convert capacitance between farads, millifarads, microfarads, nanofarads, and picofarads.
Resistance Converter
Convert resistance between milliohms, ohms, kilohms, megaohms, and gigaohms.
Current Converter
Convert electric current between amperes, milliamperes, microamperes, nanoamperes, and picoamperes.
Voltage Converter
Convert voltage between microvolts, millivolts, volts, kilovolts, and megavolts.
Time Converter
Convert time between seconds, milliseconds, microseconds, nanoseconds, picoseconds, and femtoseconds for digital and RF applications.
Magnetic Units
Convert magnetic flux density between Tesla, milliTesla, microTesla, Gauss, and nanoTesla for sensor and motor applications.
Data Rate Converter
Convert data rates instantly: bps ↔ kbps ↔ Mbps ↔ Gbps and bytes/sec. Includes presets for UART (9600 bps), CAN (1 Mbps), Ethernet (100 Mbps), and GbE. Also converts baud rate to kbps.
Angle Converter
Convert angles between degrees, radians, gradians, arcminutes, arcseconds, and turns for motor, antenna, and RF applications.
Energy Converter
Convert energy between joules, millijoules, electron-volts, kilowatt-hours, calories, and BTU.
Torque Converter
Convert torque between Newton-metres, pound-feet, pound-inches, oz·in, kg·cm, kg·m, and dyne·cm.
Illuminance Converter
Convert illuminance between lux, foot-candles, millilux, kilolux, and phot for ambient light sensor and LED design.
About Unit Conversion Calculators
Unit conversion in electronics and RF engineering spans several domains where multiple competing unit systems coexist: power in watts and dBm, frequency in Hz/kHz/MHz/GHz, wire gauge in AWG and mm², temperature in Celsius/Fahrenheit/Kelvin, and dozens of derived quantities.
The dBm scale is ubiquitous in RF work because it converts multiplicative gain/loss calculations to additive arithmetic: 0 dBm = 1 mW, 10 dBm = 10 mW, 30 dBm = 1 W. A transmitter at 20 dBm through a 3 dB cable to an antenna with 5 dBi gain produces 22 dBm EIRP — trivial addition versus multiplying milliwatts. The dBm/Watts converter handles conversion in both directions including intermediate values.
AWG (American Wire Gauge) is a logarithmic scale running backwards: larger AWG numbers mean thinner wire. AWG 20 (0.812 mm diameter) carries 1.5 A; AWG 10 (2.588 mm) carries 15 A. The relationship between AWG and wire cross-section area determines resistance per unit length and therefore voltage drop and I²R heating in power wiring.
Capacitor codes follow a 3-digit EIA scheme where the first two digits are significant figures and the third is a multiplier power of 10 in picofarads: 104 = 10 × 10⁴ pF = 100 nF. Frequency-wavelength conversion (λ = c/f) is essential for antenna design, waveguide dimensioning, and understanding propagation — a 2.4 GHz signal has a 12.5 cm wavelength, meaning PCB traces longer than ~3 cm become transmission lines requiring impedance control.