Unit converter

Frequency converter

Convert hertz and decimal frequency multiples from millihertz to terahertz.

Enter a value and choose units. Results update instantly.

1 Hz = 0.001 kHz

All Frequency units

From 1 Hz
UnitValue
Millihertz mHz 1,000
Hertz Hz 1
Kilohertz kHz 0.001
Megahertz MHz 0.000001
Gigahertz GHz 0.000000001
Terahertz THz 1e-12
Revolution per minute rpm 60
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Common tasks

Hertz to KilohertzHz to kHz Megahertz to HertzMHz to Hz Gigahertz to MegahertzGHz to MHz Revolution per minute to Hertzrpm to Hz Terahertz to GigahertzTHz to GHz Kilohertz to MegahertzkHz to MHz

Reference

How frequency conversion works

Frequency counts repeating cycles per second. Decimal SI prefixes are exact, making conversions between hertz multiples simple powers of ten.

Values are converted to hertz first, then from that reference into the requested unit. Keeping a single documented reference reduces inconsistent pair-by-pair constants.

Accuracy note: All SI prefix conversions are exact; rpm assumes each revolution is one complete cycle.

Unit reference

UnitSymbol1 unit in Hz
MillihertzmHz0.001
HertzHz1
KilohertzkHz1,000
MegahertzMHz1,000,000
GigahertzGHz1,000,000,000
TerahertzTHz1e12
Revolution per minuterpm0.016666666667

Long-tail directory

Every indexed conversion

Choose a source unit to see all available destinations.

From Millihertz (mHz)
Millihertz to HertzMillihertz to KilohertzMillihertz to MegahertzMillihertz to GigahertzMillihertz to TerahertzMillihertz to Revolution per minute
From Hertz (Hz)
Hertz to MillihertzHertz to KilohertzHertz to MegahertzHertz to GigahertzHertz to TerahertzHertz to Revolution per minute
From Kilohertz (kHz)
Kilohertz to MillihertzKilohertz to HertzKilohertz to MegahertzKilohertz to GigahertzKilohertz to TerahertzKilohertz to Revolution per minute
From Megahertz (MHz)
Megahertz to MillihertzMegahertz to HertzMegahertz to KilohertzMegahertz to GigahertzMegahertz to TerahertzMegahertz to Revolution per minute
From Gigahertz (GHz)
Gigahertz to MillihertzGigahertz to HertzGigahertz to KilohertzGigahertz to MegahertzGigahertz to TerahertzGigahertz to Revolution per minute
From Terahertz (THz)
Terahertz to MillihertzTerahertz to HertzTerahertz to KilohertzTerahertz to MegahertzTerahertz to GigahertzTerahertz to Revolution per minute
From Revolution per minute (rpm)
Revolution per minute to MillihertzRevolution per minute to HertzRevolution per minute to KilohertzRevolution per minute to MegahertzRevolution per minute to GigahertzRevolution per minute to Terahertz

Primary source

Definitions and standards

Conversion constants and definitions for this category are checked against BIPM SI Brochure: hertz.

See Methods & sources for rounding rules, exact-value handling, and review policy.

Questions

Frequency FAQ

What is the reference unit for frequency conversions?

ConvertWin uses hertz (Hz) as the internal reference for this category, then converts to the selected output unit.

How accurate is this frequency converter?

All SI prefix conversions are exact; rpm assumes each revolution is one complete cycle.