A Rontoohm (rΩ) equals 1e-27 ohm(s), a scaled unit of electrical resistance used for ronto-scale electrical work.
Rontoohms to Femtoohms
Convert Rontoohm (rΩ) to Femtoohm (fΩ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Electrical calculator
Electricity Converter
Convert rontoohms (rΩ) to femtoohms (fΩ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Femtoohm (fΩ) equals 1e-15 ohm(s), a scaled unit of electrical resistance used for femto-scale electrical work.
fΩ = rΩ × 1.000000e-12
Results update instantly for Rontoohms to Femtoohms conversions.
Reserved above the conversion cards and below the converter.
Formula
fΩ = rΩ × 1.000000e-12
rΩ = fΩ × 1.000000e+12
Conversion table
| 1 rΩ | 1.000000e-12 fΩ |
| 5 rΩ | 5.000000e-12 fΩ |
| 10 rΩ | 1.000000e-11 fΩ |
| 20 rΩ | 2.000000e-11 fΩ |
| 50 rΩ | 5.000000e-11 fΩ |
| 100 rΩ | 1.000000e-10 fΩ |
| 500 rΩ | 5.000000e-10 fΩ |
| 1000 rΩ | 1.000000e-09 fΩ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both rontoohm and femtoohm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in rontoohms by 1.000000e-12 to get femtoohms. To reverse the conversion, multiply a femtoohm value by 1.000000e+12 to get back to rontoohms.
Frequently asked questions
What is Rontoohm (rΩ)?
A Rontoohm (rΩ) equals 1e-27 ohm(s), a scaled unit of electrical resistance used for ronto-scale electrical work.
What is Femtoohm (fΩ)?
A Femtoohm (fΩ) equals 1e-15 ohm(s), a scaled unit of electrical resistance used for femto-scale electrical work.
How do I convert rontoohms to femtoohms?
Multiply the rontoohm value by 1.000000e-12 to get the equivalent in femtoohms. For example, 5 rΩ × 1.000000e-12 = 5.000000e-12 fΩ.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e-12 is an exact, non-rounded value.
Can I convert femtoohms back to rontoohms?
Yes. Divide the femtoohm value by 1.000000e-12, or multiply it by 1.000000e+12, to get rontoohms.
Reserved between the FAQ and the article so the page stays balanced.
About converting rontoohms to femtoohms
A Rontoohm (rΩ) equals 1e-27 ohm(s), a scaled unit of electrical resistance used for ronto-scale electrical work. A Femtoohm (fΩ) equals 1e-15 ohm(s), a scaled unit of electrical resistance used for femto-scale electrical work.
Use this calculator to move between rontoohms and femtoohms accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.