Deciampere is 0.1 ampere units.
Deciamperes to Ronnaamperes Converter — dA to RA
Convert Deciampere (dA) to Ronnaampere (RA) using the exact conversion factor (1 deciampere = 1e-28 ronnaampere). See the formula, worked examples, and conversion table.
Deciamperes to Ronnaamperes converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Ronnaampere is 1e+27 ampere units.
Result = input x 0.1 / 1e+27.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Deciamperes to Ronnaamperes
Deciampere and Ronnaampere both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Deciampere is 0.1 ampere units, and ronnaampere is 1e+27 ampere units.
Formula
ronnaamperes = deciamperes × 1e-28
This factor comes from each unit's defined relationship to the category's base unit: 1 deciampere equals 0.1 base units, and 1 ronnaampere equals 1e+27 base units, so dividing one by the other gives the direct deciampere-to-ronnaampere factor of 1e-28.
Simple example
1 dA × 1e-28 = 1e-28 RA
1 deciampere = 1e-28 ronnaamperes.
Real-world example
120 dA × 1e-28 = 1.2e-26 RA
120 deciamperes = 1.2e-26 ronnaamperes.
Conversion table
| Deciampere (dA) | Ronnaampere (RA) |
|---|---|
| 1 dA | 1e-28 RA |
| 5 dA | 5e-28 RA |
| 12 dA | 1.2e-27 RA |
| 24 dA | 2.4e-27 RA |
| 120 dA | 1.2e-26 RA |
| 240 dA | 2.4e-26 RA |
Reverse conversion: Ronnaampere to Deciampere
1e-28 RA × 1e+28 = 1 dA
1e-28 ronnaamperes = 1 deciamperes.
deciamperes = ronnaamperes × 1e+28
For a page dedicated to this direction, see Ronnaampere to Deciampere.
Understanding the Deciampere (dA)
Deciampere is 0.1 ampere units.
Understanding the Ronnaampere (RA)
Ronnaampere is 1e+27 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnaamperes are in 1 deciampere?
1 deciampere equals 1e-28 ronnaamperes, using the exact defined conversion factor rather than an estimate.
How do I convert deciampere to ronnaampere?
Multiply the deciampere value by 1e-28. The converter above does this instantly to whatever precision you set.
How do I convert ronnaampere back to deciampere?
Use the reverse factor: 1 ronnaampere equals 1e+28 deciamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a deciampere?
Deciampere (dA) is a unit of electricity.
What is a ronnaampere?
Ronnaampere (RA) is a unit of electricity.
Is the deciampere to ronnaampere conversion exact?
Yes. Both deciampere and ronnaampere are defined by fixed standards rather than physical artifacts, so the factor of 1e-28 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.