Frequency Converter
Convert between different frequency units including Hz, kHz, MHz, GHz, and THz. Quick and accurate frequency conversions for electronics and physics applications.
Conversion Settings
No value entered
Conversion Result
Conversion result will appear here
Enter a value and click "Convert" to start
Common Frequency References
Audio & Radio:
- • Human hearing: 20 Hz - 20 kHz
- • AM Radio: 535 - 1605 kHz
- • FM Radio: 88 - 108 MHz
- • WiFi 2.4G: 2.4 GHz
Technology:
- • WiFi 5G: 5 GHz
- • CPU Clock: 1-5 GHz
- • Microwave: 2.45 GHz
- • Visible Light: 430-770 THz
About Frequency Converter
A precise frequency converter that handles conversions between major frequency units including Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), and Terahertz (THz). This essential tool provides accurate frequency conversions for electronics, radio, telecommunications, and physics applications with instant results and proper decimal precision.
Why use a Frequency Converter?
Critical for electronics engineering, radio frequency work, telecommunications, and physics calculations where different frequency scales are used. Prevents conversion errors in circuit design, antenna calculations, and signal processing while supporting both educational and professional frequency conversion needs.
Who is it for?
Essential for electronics engineers, radio technicians, telecommunications professionals, physics students, and researchers who need accurate frequency conversions. Also valuable for amateur radio operators, RF engineers, and anyone working with electronic circuits, oscillators, or signal processing equipment.
How to use the tool
Enter your frequency value in the input field
Select the source frequency unit (Hz, kHz, MHz, GHz, or THz)
Choose your target frequency unit for conversion
View the converted frequency with appropriate decimal precision
Copy the result for use in calculations, circuit design, or technical documentation
Frequently Asked Questions
How do I convert frequency units?
Enter the source value, pick the 'from' and 'to' units, and the result appears instantly. Supports Hz, kHz, MHz, GHz, THz, rpm (rev/min), rad/s. Copy the converted value to clipboard. Conversion runs entirely in your browser — values never leave the device. Decimal precision is configurable; default shows 4-6 significant figures, appropriate for most use cases. For scientific work needing more precision, increase the decimal places in the settings.
What frequency units does this converter support?
Hz, kHz, MHz, GHz, THz, rpm (rev/min), rad/s. The set covers SI base and derived units, common imperial/US-customary units, and domain-specific units where relevant. SI prefixes (k, M, G, m, μ, n) apply where applicable. For any unit not in the list that you need converted, mention it via feedback — the unit set evolves based on user requests.
How accurate is the frequency conversion?
Conversions use exact internationally-defined factors where they exist — no rounding loss at the math level. Hz is defined as s⁻¹. Standard SI prefixes (kHz, MHz, GHz) are decimal-based. Audio sample rates (44.1 kHz, 48 kHz, 96 kHz) and radio frequencies use exact SI values. Output precision is bounded by the displayed decimal places (configurable, typically 4-6 by default). For extreme precision needs (scientific publications), increase the displayed decimals to match your significant-figure requirements.
What's the formula to convert rotations per minute (rpm) to hertz (Hz)?
Hz = rpm ÷ 60. Engine performance (rpm at peak torque/power, RC motors, drone propellers), audio (CPU clock GHz, audio sample rates in kHz), radio/wireless (MHz/GHz spectrum). For other frequency-unit pairs, the tool applies the appropriate exact conversion factor automatically — no manual formula needed. The conversion preserves precision to the displayed decimal places; choose precision to match your downstream use (engineering specs typically need 3-4 significant figures; scientific work may need more).
What's the key accuracy caveat for frequency conversion?
**Hz (cycles per second) vs rpm (rotations per minute) vs angular frequency (rad/s)** — three ways to describe the same rotation, with different conventions. 60 rpm = 1 Hz = 2π rad/s. CPU clock speeds use Hz (GHz); engine speeds use rpm; physics rotational equations use rad/s. The angular frequency ω relates to ordinary frequency f by ω = 2πf. **Hz** is the SI unit, defined as one cycle (or event) per second.
What's a common real-world use case for frequency conversion?
Engine performance (rpm at peak torque/power, RC motors, drone propellers), audio (CPU clock GHz, audio sample rates in kHz), radio/wireless (MHz/GHz spectrum).
What frequency units are commonly confused?
**Hz vs rpm** — divide rpm by 60 to get Hz. **MHz vs MB/s** — Hz is frequency (oscillations); MB/s is throughput. **'CPU at 3 GHz'** — 3 billion clock cycles per second.
How do I handle very large or very small frequency values?
Use SI prefixes for clean scaling: kilo (10³), mega (10⁶), giga (10⁹), milli (10⁻³), micro (10⁻⁶), nano (10⁻⁹). For values beyond standard prefixes, the tool displays results in scientific notation (e.g. 1.23e+15) for readability. Hz is defined as s⁻¹. Standard SI prefixes (kHz, MHz, GHz) are decimal-based. Audio sample rates (44.1 kHz, 48 kHz, 96 kHz) and radio frequencies use exact SI values. For data interchange to other tools, copy the raw value; for human readers, use the precision that matches the context.
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