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International System of unit (SI) : Electrical Resistance=Ohm
| Ohm | Milliohm | Microohm | Kiloohm | Megaohm | Gigaohm | Mho | Siemens | Kilosiemens | Megasiemens | Ohm per Meter | Ohm per Centimeter | Ohm per Kilometer | Mho per Meter | Kilovolt | Megavolt | Volt per Meter | Voltage Drop | Microvolt | Nanovolt | Picovolt | Kiloohm per Meter | Megaohm per Meter | Thousandth of an Ohm | Resistivity | Conductance | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ohm | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Milliohm | 1,000 | 1 | 0.001 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1,000 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1,000 | 1,000 | 1,000 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1,000 | 1,000 | 0.001 | 1.0000e-6 | 1.0000e-9 | 1.0000e+6 | 1.0000e+9 | 1 | 1,000 | 1,000 |
| Microohm | 1.0000e+6 | 1,000 | 1 | 1.0000e+9 | 1.0000e+12 | 1.0000e+15 | 1.0000e+6 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1.0000e+6 | 1.0000e+6 | 1.0000e+6 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1.0000e+6 | 1.0000e+6 | 1 | 0.001 | 1.0000e-6 | 1.0000e+9 | 1.0000e+12 | 1,000 | 1.0000e+6 | 1.0000e+6 |
| Kiloohm | 0.001 | 1.0000e-6 | 1.0000e-9 | 1 | 1,000 | 1.0000e+6 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 1.0000e-9 | 1.0000e-12 | 1.0000e-15 | 1 | 1,000 | 1.0000e-6 | 0.001 | 0.001 |
| Megaohm | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 0.001 | 1 | 1,000 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-12 | 1.0000e-15 | 1.0000e-18 | 0.001 | 1 | 1.0000e-9 | 1.0000e-6 | 1.0000e-6 |
| Gigaohm | 1.0000e-9 | 1.0000e-12 | 1.0000e-15 | 1.0000e-6 | 0.001 | 1 | 1.0000e-9 | 1.0000e-9 | 1.0000e-6 | 0.001 | 1.0000e-9 | 1.0000e-9 | 1.0000e-9 | 1.0000e-9 | 1.0000e-6 | 0.001 | 1.0000e-9 | 1.0000e-9 | 1.0000e-15 | 1.0000e-18 | 1.0000e-21 | 1.0000e-6 | 0.001 | 1.0000e-12 | 1.0000e-9 | 1.0000e-9 |
| Mho | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Siemens | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Kilosiemens | 0.001 | 1.0000e-6 | 1.0000e-9 | 1 | 1,000 | 1.0000e+6 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 1.0000e-9 | 1.0000e-12 | 1.0000e-15 | 1 | 1,000 | 1.0000e-6 | 0.001 | 0.001 |
| Megasiemens | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 0.001 | 1 | 1,000 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-12 | 1.0000e-15 | 1.0000e-18 | 0.001 | 1 | 1.0000e-9 | 1.0000e-6 | 1.0000e-6 |
| Ohm per Meter | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Ohm per Centimeter | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Ohm per Kilometer | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Mho per Meter | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Kilovolt | 0.001 | 1.0000e-6 | 1.0000e-9 | 1 | 1,000 | 1.0000e+6 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 1.0000e-9 | 1.0000e-12 | 1.0000e-15 | 1 | 1,000 | 1.0000e-6 | 0.001 | 0.001 |
| Megavolt | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 0.001 | 1 | 1,000 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-12 | 1.0000e-15 | 1.0000e-18 | 0.001 | 1 | 1.0000e-9 | 1.0000e-6 | 1.0000e-6 |
| Volt per Meter | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Voltage Drop | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Microvolt | 1.0000e+6 | 1,000 | 1 | 1.0000e+9 | 1.0000e+12 | 1.0000e+15 | 1.0000e+6 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1.0000e+6 | 1.0000e+6 | 1.0000e+6 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1.0000e+6 | 1.0000e+6 | 1 | 0.001 | 1.0000e-6 | 1.0000e+9 | 1.0000e+12 | 1,000 | 1.0000e+6 | 1.0000e+6 |
| Nanovolt | 1.0000e+9 | 1.0000e+6 | 1,000 | 1.0000e+12 | 1.0000e+15 | 1.0000e+18 | 1.0000e+9 | 1.0000e+9 | 1.0000e+12 | 1.0000e+15 | 1.0000e+9 | 1.0000e+9 | 1.0000e+9 | 1.0000e+9 | 1.0000e+12 | 1.0000e+15 | 1.0000e+9 | 1.0000e+9 | 1,000 | 1 | 0.001 | 1.0000e+12 | 1.0000e+15 | 1.0000e+6 | 1.0000e+9 | 1.0000e+9 |
| Picovolt | 1.0000e+12 | 1.0000e+9 | 1.0000e+6 | 1.0000e+15 | 1.0000e+18 | 1.0000e+21 | 1.0000e+12 | 1.0000e+12 | 1.0000e+15 | 1.0000e+18 | 1.0000e+12 | 1.0000e+12 | 1.0000e+12 | 1.0000e+12 | 1.0000e+15 | 1.0000e+18 | 1.0000e+12 | 1.0000e+12 | 1.0000e+6 | 1,000 | 1 | 1.0000e+15 | 1.0000e+18 | 1.0000e+9 | 1.0000e+12 | 1.0000e+12 |
| Kiloohm per Meter | 0.001 | 1.0000e-6 | 1.0000e-9 | 1 | 1,000 | 1.0000e+6 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 0.001 | 0.001 | 1 | 1,000 | 0.001 | 0.001 | 1.0000e-9 | 1.0000e-12 | 1.0000e-15 | 1 | 1,000 | 1.0000e-6 | 0.001 | 0.001 |
| Megaohm per Meter | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 0.001 | 1 | 1,000 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 1.0000e-6 | 0.001 | 1 | 1.0000e-6 | 1.0000e-6 | 1.0000e-12 | 1.0000e-15 | 1.0000e-18 | 0.001 | 1 | 1.0000e-9 | 1.0000e-6 | 1.0000e-6 |
| Thousandth of an Ohm | 1,000 | 1 | 0.001 | 1.0000e+6 | 1.0000e+9 | 1.0000e+12 | 1,000 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1,000 | 1,000 | 1,000 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1,000 | 1,000 | 0.001 | 1.0000e-6 | 1.0000e-9 | 1.0000e+6 | 1.0000e+9 | 1 | 1,000 | 1,000 |
| Resistivity | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
| Conductance | 1 | 0.001 | 1.0000e-6 | 1,000 | 1.0000e+6 | 1.0000e+9 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1 | 1 | 1,000 | 1.0000e+6 | 1 | 1 | 1.0000e-6 | 1.0000e-9 | 1.0000e-12 | 1,000 | 1.0000e+6 | 0.001 | 1 | 1 |
Electrical resistance is a fundamental property of materials that quantifies how much they oppose the flow of electric current. Measured in ohms (Ω), resistance plays a crucial role in electrical engineering and physics, influencing how circuits operate and how energy is dissipated.
The standard unit of electrical resistance is the ohm, symbolized by the Greek letter omega (Ω). The International System of Units (SI) defines one ohm as the resistance between two points of a conductor when a constant potential difference of one volt applied across those points produces a current of one ampere. This standardization ensures consistency and accuracy in electrical measurements worldwide.
The concept of electrical resistance dates back to the early studies of electricity in the 19th century. Georg Simon Ohm, a German physicist, formulated Ohm's Law, which establishes the relationship between voltage, current, and resistance. This groundbreaking work laid the foundation for modern electrical engineering, enabling the development of various electrical components and systems.
To illustrate the concept of electrical resistance, consider a circuit with a voltage of 12 volts and a current of 3 amperes. Using Ohm's Law (R = V/I), the resistance can be calculated as follows:
[ R = \frac{V}{I} = \frac{12 \text{ volts}}{3 \text{ amperes}} = 4 \text{ ohms} ]
Electrical resistance can be expressed in various units, including:
To use the Electrical Resistance tool effectively:
What is electrical resistance?
How do I convert ohms to kiloohms?
What is Ohm's Law?
What are the different units of electrical resistance?
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What is the significance of a high resistance value?
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How do I measure resistance in a circuit?
Where can I find more information about electrical resistance?
By utilizing our Electrical Resistance tool, you can easily convert and understand resistance values, enhancing your knowledge and application in electrical engineering and related fields.
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