Convert Terameter to Micron
Convert terameters to microns instantly. 1 terameter = 1e+18 micron — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Micron to Terameter converter for the reverse conversion.
Units explained
Terameter
A terameter is a metric unit of length equal to one trillion meters (1×10¹² m). It is rare in everyday use but appears in astronomy when expressing solar-system-scale distances in SI units.
The terameter uses the SI prefix tera- (from Greek teras, monster), adopted by the CGPM in 1960 to denote multiplication by one trillion (10¹²).
Terameters are occasionally used in astronomy to express distances on the order of Earth–Sun (~0.15 Tm or 1 AU) and outer-planet distances. The astronomical unit (AU) and light-hour are more common in practice.
SI prefix tera- adopted in 1960; the terameter is the standard SI prefix unit for distances comparable to inter-planetary scales but is less common than the AU in working astronomy.
Micron
A micron is a deprecated synonym for the micrometer (1×10⁻⁶ m). Although officially obsolete since 1967, the term remains in widespread informal use in microscopy, biology, materials science, and industrial filtration.
The term micron was coined in 1879 by the BIPM as a unit name for one millionth of a meter. It was officially deprecated in 1967 in favor of the SI-compliant name micrometer to avoid confusion with the device (also called a micrometer) used for precise mechanical measurement.
Microns are used informally in filtration ratings (e.g., a 5-micron water filter), industrial coatings, microscopy specifications, and pharmaceutical particle-size descriptions. The conversion to micrometers is exact: 1 micron = 1 µm = 1×10⁻⁶ m.
Introduced in 1879, deprecated by the BIPM in 1967, but retained in informal industrial and scientific usage well into the 21st century.
Terameter to Micron conversion formula
The relationship between terameters and microns:
To convert terameters to microns, multiply the value in terameters by 1e+18. To reverse, multiply microns by 1e-18.
How to use this converter
Type a value into the calculator. The result in microns updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Micron to Terameter converter for the reverse direction.
Step-by-step: convert terameters to microns
- Write down the value in terameters (Tm).
- Multiply that value by the factor 1e+18.
- The product is the equivalent value in microns (micron).
- To reverse, multiply the micron value by 1e-18.
Worked examples
Example 1 — Convert 1 Tm to micron:
1 × 1e+18 = 1e+18 micron
Example 2 — Convert 100 Tm to micron:
100 × 1e+18 = 1e+20 micron
Terameter to Micron conversion table
Standard reference values for converting terameters to microns:
| Terameter [Tm] | Micron [micron] |
|---|---|
| 0.01 | 1e+16 |
| 0.1 | 1e+17 |
| 1 | 1e+18 |
| 2 | 2e+18 |
| 3 | 3e+18 |
| 4 | 4e+18 |
| 5 | 5e+18 |
| 10 | 1e+19 |
| 20 | 2e+19 |
| 30 | 3e+19 |
| 40 | 4e+19 |
| 50 | 5e+19 |
| 100 | 1e+20 |
| 500 | 5e+20 |
| 1000 | 1e+21 |
Frequently asked questions
How many microns is 1 terameter?
How do I convert terameters to microns?
How do I convert microns back to terameters?
How many microns is 100 terameters?
Popular length unit conversions
Convert Terameter to other length units
Show all Terameter conversions
Metric / SI (17 units)
Imperial / US Customary (4 units)
Sources & references
Conversion factor (1 Tm = 1e+18 micron) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.