Authoritative definitions of the International System of Units and SI prefixes.
Unit conversion
Megaohms to Ohms Converter
1 MΩ = 1,000,000 Ω. Enter a value to convert MΩ to Ω, then use the formula and table below. Displayed digits may be rounded.
Electrical unitsInstant result
Decimals
Formula result = input × 1000000 ÷ 1. 1 MΩ = 1,000,000 Ω
Nonzero results too small for the selected decimal places use scientific notation.
Nonzero results too small for the selected decimal places use scientific notation.
Common examples
One value, several units
Ohms1,000,000 Ω
Kiloohms1,000 kΩ
Milliohms1,000,000,000 mΩ
Conversion table
| MΩ | Ω |
|---|---|
| 1 MΩ | 1,000,000 Ω |
| 2 MΩ | 2,000,000 Ω |
| 5 MΩ | 5,000,000 Ω |
| 10 MΩ | 10,000,000 Ω |
| 25 MΩ | 25,000,000 Ω |
| 50 MΩ | 50,000,000 Ω |
| 100 MΩ | 100,000,000 Ω |
Conversion chart
1 MΩ1,000,000 Ω
5 MΩ5,000,000 Ω
10 MΩ10,000,000 Ω
25 MΩ25,000,000 Ω
50 MΩ50,000,000 Ω
Worked example
1 MΩ = 1,000,000 Ω. Apply the selected conversion formula to other input values.
Unit definition
Megaohms (MΩ) One megaohms equals 1,000,000 ohm.
Unit history
Megaohms is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert MΩ to ohm.
3. Convert the base value to Ω and apply your display precision.
Understand the result before using it
Megaohms to Ohms converts a value measured in Megaohms (MΩ) into the equivalent value in Ohms (Ω). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1000000 ÷ 1
Assumptions
- Megaohms and Ohms represent the same resistance quantity.
- The input is expressed in MΩ; the output is expressed in Ω.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 MΩ = 1,000,000 Ω. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a MΩ measurement in a document that expects Ω.
- Compare a megaohms value with a value reported in ohms.
- Check the MΩ to Ω arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse MΩ with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Megaohms to Ohms?
result = input × 1000000 ÷ 1. Input is in MΩ; result is in Ω. 1 MΩ = 1,000,000 Ω. The displayed digits may be rounded.
What is 1 MΩ in Ω?
1 MΩ = 1,000,000 Ω. The displayed digits may be rounded.
Can I reverse the MΩ to Ω conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts Ω back to MΩ.
Is the Megaohms to Ohms result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.