Convert %IACS to Megasiemens per Metre (%IACS to MS/m)
1 percent IACS (%IACS) = 0.58 megasiemens per metre (MS/m). 1 MS/m = 1.724137931 %IACS. Example: 61 %IACS = 61 × 0.58 = 35.38 MS/m.
Also searched as percent IACS to MS/m, percent IACS in MS/m, percent IACS into megasiemens per metre, %IACS to MS/m, %IACS in megasiemens per metre, %IACS into megasiemens per metre, percent IACS to megasiemens per metre, %IACS to megasiemens per metre converter, percent IACS to megasiemens per meter and how many megasiemens per metre in a percent IACS.
1 %IACS = 0.58 MS/m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk percent IACS to megasiemens per metre converter to paste a column from Excel.
How to Convert %IACS to Megasiemens per Metre
- 1 %IACS = 0.58 MS/m
- 1 MS/m = 1.724137931 %IACS
- Example: convert 61 %IACS to MS/m: 61 %IACS = 61 × 0.58 MS/m = 35.38 MS/m
Reference conditions. %IACS: 100 %IACS = 58 MS/m at 20 °C (International Annealed Copper Standard)
Formula
MS/m = %IACS × 0.58
or MS/m = %IACS ÷ 1.724137931034
Derivation from SI units:
- 100 %IACS = 58 m/(Ω·mm²) = 58 MS/m at 20 °C, so 1 %IACS = 0.58 MS/m (exact)
- 1 MS/m = 10⁶ S/m = 1 m/(Ω·mm²)
- 1 %IACS = 580000 S/m ÷ 1000000 S/m per MS/m = 0.58 MS/m
Both units are defined exactly, so the factor is exact. %IACS definition: percent IACS; Megasiemens per Metre definition: megasiemens per metre.
Worked examples
- Aluminium 1350 at 61 %IACS is 35.38 MS/m.
61 %IACS × 0.58 = 35.38 MS/m - Annealed copper at 101 %IACS is 58.58 MS/m.
101 %IACS × 0.58 = 58.58 MS/m
%IACS to Megasiemens per Metre conversion table
| %IACS | Megasiemens per Metre (MS/m) |
|---|---|
| 3 %IACS | 1.74 MS/m |
| 10 %IACS | 5.8 MS/m |
| 28 %IACS | 16.24 MS/m |
| 30 %IACS | 17.4 MS/m |
| 45 %IACS | 26.1 MS/m |
| 50 %IACS | 29 MS/m |
| 61 %IACS | 35.38 MS/m |
| 80 %IACS | 46.4 MS/m |
| 100 %IACS | 58 MS/m |
| 101 %IACS | 58.58 MS/m |
| 103 %IACS | 59.74 MS/m |
| 105 %IACS | 60.9 MS/m |
Where it's used
Eddy-current conductivity readings and conductor grades in %IACS are converted to MS/m for SI datasheets and calculations. Multiply by 0.58.
%IACS to other electrical conductivity units
| Conversion | 1 %IACS equals |
|---|---|
| percent IACS to megasiemens per metre | 0.58 MS/m |
| percent IACS to siemens per metre | 580000 S/m |
| percent IACS to millisiemens per centimetre | 5800000 mS/cm |
| percent IACS to microsiemens per centimetre | 5800000000 µS/cm |
| percent IACS to decisiemens per metre | 5800000 dS/m |
| percent IACS to siemens per centimetre | 5800 S/cm |
| percent IACS to millisiemens per metre | 580000000 mS/m |
Frequently asked questions
How do I convert %IACS to MS/m?
Multiply by 0.58, because 100 %IACS is defined as exactly 58 MS/m at 20 °C.
Can copper be more than 100 %IACS?
Yes. The standard was set in 1913; modern high-purity annealed copper reaches about 101–103 %IACS.
How many megasiemens per metre are in 1 percent IACS?
1 %IACS = 0.58 MS/m.
How do I convert percent IACS to megasiemens per metre?
Multiply the value in %IACS by 0.58, or divide it by 1.724137931. For example, 61 %IACS × 0.58 = 35.38 MS/m.
Is the %IACS to MS/m conversion exact?
Yes. Both units are defined exactly, and 1 %IACS is exactly 0.58 MS/m.
Sources
- Copper Wire Tables, NBS Handbook 100 (International Annealed Copper Standard), National Bureau of Standards (now NIST) , Section 1.2, International Annealed Copper Standard.
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert %IACS to Megasiemens per Metre (%IACS to MS/m). Retrieved October 25, 2026, from https://scientificconverters.com/electrical-conductivity/percent-iacs-to-megasiemens-per-meter/
IEEE
Scientific Converters, "Convert %IACS to Megasiemens per Metre (%IACS to MS/m)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/electrical-conductivity/percent-iacs-to-megasiemens-per-meter/