Formula
THz to mHz conversion formula
Use this relationship for a direct conversion:
mHz = THz x 1e15
Worked example
2 THz = 2e15 mHz.
All SI prefix conversions are exact; rpm assumes each revolution is one complete cycle.
Frequency conversion
Convert Terahertz to Millihertz
1 terahertz (THz) equals 1e15 millihertz (mHz). Enter any value below to convert from THz to mHz.
Enter a value and choose units. Results update instantly.
1 THz = 1e15 mHz
All Frequency units
From 1 THz| Unit | Value |
|---|---|
| Millihertz mHz | 1e15 |
| Hertz Hz | 1e12 |
| Kilohertz kHz | 1,000,000,000 |
| Megahertz MHz | 1,000,000 |
| Gigahertz GHz | 1,000 |
| Terahertz THz | 1 |
| Revolution per minute rpm | 6e13 |
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Quick reference
Terahertz to Millihertz table
| Terahertz (THz) | Millihertz (mHz) |
|---|---|
| 0.01 | 1e13 |
| 0.1 | 1e14 |
| 1 | 1e15 |
| 2 | 2e15 |
| 5 | 5e15 |
| 10 | 1e16 |
| 25 | 2.5e16 |
| 50 | 5e16 |
| 100 | 1e17 |
| 1,000 | 1e18 |
From unit
About the terahertz
One trillion hertz.
Symbol: THz
To unit
About the millihertz
One thousandth of a hertz.
Symbol: mHz
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Related conversions
Source
Conversion standard
Definitions are checked against BIPM SI Brochure: hertz. Calculations use full internal precision before display rounding.
View the complete frequency converterQuestions
THz to mHz FAQ
How do you convert terahertz to millihertz?
Use the formula mHz = THz x 1e15. 1 terahertz (THz) equals 1e15 millihertz (mHz).
Is the THz to mHz conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.