Magnetic Flux Converter

Convert magnetic flux values among common SI, metric and customary units. Magnetic flux measures the total magnetic field passing through a surface. One maxwell equals 10⁻⁸ weber.

ValueSigned values are supported; scientific notation is accepted.Convert fromWeber (Wb)Milliweber (mWb)Microweber (µWb)Maxwell (Mx)Convert toWeber (Wb)Milliweber (mWb)Microweber (µWb)Maxwell (Mx)

Convert

Converted value100000000 Mx

SI-base value1 Wb

Multiply by100000000

The displayed results apply to the default example. Enable JavaScript to convert other values.

How to use this converter

1. Enter the magnetic flux value.
2. Select its current unit and the unit you want.
3. Select Convert. The page shows the converted value, the SI-base value and the direct multiplication factor.

Conversion formula

Converted value = entered value × source-to-SI factor ÷ target-to-SI factor.

Every option is represented by its factor to weber (Wb). This one-base method keeps reciprocal conversions consistent. Calculations run in your browser, and old results are hidden when an input changes or validation fails.

Worked example

Convert 1 Wb to Mx. Multiply by 100000000; the result is 100000000 Mx. The same input equals 1 Wb in the SI-base unit.

Accuracy and limitations

Flux depends on field distribution, area and orientation. Unit conversion alone does not determine electromagnetic force or device performance.

The calculator retains more digits internally than it displays. Round the final value to the precision supported by your measurement. Very large and very small answers may use scientific notation.

Frequently asked questions

What is the difference between weber and tesla?

Weber measures total magnetic flux; tesla measures flux density, equal to weber per square meter.

Can I reverse the conversion?

Yes. Swap the From and To selections. Because both units use the same SI base, the reverse factor is the reciprocal of the forward factor.

Why was my entry rejected?

Use digits with an optional decimal point or scientific notation. Blank values, commas, fractions, words and non-finite entries are rejected. Negative values are allowed when they express direction or polarity.

Review notes and sources

Reviewed October 4, 2026. The conversion factors, default example, zero or signed boundary behavior, invalid-input handling and recovery after an error were checked. Factors follow SI definitions and published conversion guidance from the NIST Guide to the SI and the BIPM SI Brochure. Explanations and examples are original.

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