Convert %IACS to Millisiemens per Metre (%IACS to mS/m)
1 percent IACS (%IACS) = 580000000 millisiemens per metre (mS/m). 1 mS/m = 1.724137931 × 10⁻⁹ %IACS. Example: 15 %IACS = 15 × 580000000 = 8700000000 mS/m.
Also searched as percent IACS to mS/m, percent IACS in mS/m, percent IACS into millisiemens per metre, %IACS to mS/m, %IACS in millisiemens per metre, %IACS into millisiemens per metre, percent IACS to millisiemens per metre, %IACS to millisiemens per metre converter, percent IACS to millisiemens per meter and how many millisiemens per metre in a percent IACS.
1 %IACS = 580000000 mS/m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk percent IACS to millisiemens per metre converter to paste a column from Excel.
How to Convert %IACS to Millisiemens per Metre
- 1 %IACS = 580000000 mS/m
- 1 mS/m = 1.724137931 × 10⁻⁹ %IACS
- Example: convert 15 %IACS to mS/m: 15 %IACS = 15 × 580000000 mS/m = 8700000000 mS/m
Reference conditions. %IACS: 100 %IACS = 58 MS/m at 20 °C (International Annealed Copper Standard)
Formula
mS/m = %IACS × 580000000
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 = 10⁻³ S/m = 10 µS/cm
- 1 %IACS = 580000 S/m ÷ 0.001 S/m per mS/m = 580000000 mS/m
Both units are defined exactly, so the factor is exact. %IACS definition: percent IACS; Millisiemens per Metre definition: millisiemens per metre.
Worked examples
- A reading of 45 %IACS converts to 26100000000 mS/m.
45 %IACS × 580000000 = 26100000000 mS/m - A value of 100 %IACS is 58000000000 mS/m.
100 %IACS × 580000000 = 58000000000 mS/m
%IACS to Millisiemens per Metre conversion table
| %IACS | Millisiemens per Metre (mS/m) |
|---|---|
| 3 %IACS | 1740000000 mS/m |
| 10 %IACS | 5800000000 mS/m |
| 28 %IACS | 16240000000 mS/m |
| 30 %IACS | 17400000000 mS/m |
| 45 %IACS | 26100000000 mS/m |
| 50 %IACS | 29000000000 mS/m |
| 61 %IACS | 35380000000 mS/m |
| 80 %IACS | 46400000000 mS/m |
| 100 %IACS | 58000000000 mS/m |
| 101 %IACS | 58580000000 mS/m |
| 103 %IACS | 59740000000 mS/m |
| 105 %IACS | 60900000000 mS/m |
Where it's used
%IACS are used for copper and aluminium conductor grading, while millisiemens per metre appear in drinking-water regulations (for example in the EU). Both measure electrical conductivity, so the conversion is a fixed factor.
%IACS to other electrical conductivity units
| Conversion | 1 %IACS equals |
|---|---|
| percent IACS to millisiemens per metre | 580000000 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 megasiemens per metre | 0.58 MS/m |
| percent IACS to decisiemens per metre | 5800000 dS/m |
| percent IACS to siemens per centimetre | 5800 S/cm |
Frequently asked questions
How many millisiemens per metre are in 1 percent IACS?
1 %IACS = 580000000 mS/m.
How do I convert percent IACS to millisiemens per metre?
Multiply the value in %IACS by 580000000. For example, 15 %IACS × 580000000 = 8700000000 mS/m.
Is the %IACS to mS/m conversion exact?
Yes. Both units are defined exactly, and 1 %IACS is exactly 580000000 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 Millisiemens per Metre (%IACS to mS/m). Retrieved October 25, 2026, from https://scientificconverters.com/electrical-conductivity/percent-iacs-to-millisiemens-per-meter/
IEEE
Scientific Converters, "Convert %IACS to Millisiemens per Metre (%IACS to mS/m)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/electrical-conductivity/percent-iacs-to-millisiemens-per-meter/