Frequency conversions
| Unit | Symbol | Value |
|---|---|---|
| Hertz | Hz | 4.33000e+8 |
| Kilohertz | kHz | 433000 |
| Megahertz | MHz | 433.000 |
| Gigahertz | GHz | 0.433000 |
RF
Go from frequency to wavelength (and back) instantly.
Uses λ = c / f (299,792,458 m/s) to pair antenna lengths with clock speeds, ensuring impedance-controlled traces and stubs stay on target.
433 MHz
Input freq
692.36 mm
λ (mm)
173.09 mm
λ/4 (mm)
Preset picks
Also invert by entering a wavelength below—helpful for matching antennas to enclosure constraints.
Frequency input
Unit
Wavelength from frequency
Meter
0.69236 m
Centimeter
69.236 cm
Millimeter
692.36 mm
Micrometer
6.9236e+5 µm
Wavelength input
Unit
Frequency from wavelength
Hertz
9.6707e+9 Hz
Kilohertz
9.6707e+6 kHz
Megahertz
9670.7 MHz
Gigahertz
9.6707 GHz
Antenna fit
Compare λ/2 vs λ/4 options to see what fits inside the enclosure while keeping VSWR manageable.
Signal integrity
Judge via and stub lengths relative to edge-rate frequencies to decide where controlled impedance is essential.
Design notes
- Use effective dielectric constants (εr) for on-board traces; multiply λ by 1/√εr for microstrip approximations.
- At sub-GHz, quarter-wave ground planes can dominate enclosure design—convert λ to cm early.
- Link this tool with the reactance calculator to estimate tank components once you have λ and target impedance.