How it works
Use momentum in kilogram metres per second. A momentum of 10⁻²⁴ kg·m/s gives wavelength 6.62607015 × 10⁻¹⁰ m. The calculation uses the exact SI value of h and does not infer momentum from mass, speed or kinetic energy. Supply the appropriate relativistic momentum when that regime applies.
Inputs and units
| Input | Example value | What to enter |
|---|---|---|
| Momentum magnitude | 0 kg·m/s | Required unit: kg·m/s. Must be greater than zero. |
Worked example
Show example inputs and results
This example is generated by the same calculation engine using the starting values in the form. Your own inputs produce your own result.
- Momentum magnitude
- 0 kg·m/s
Complete example results
- De Broglie wavelength
- 6.62607015E-10 m
Reading the result
Check the units used in the formula together. The result follows the stated ideal model and supplied constants; material, environment and losses are included only where the inputs or method explicitly define them.
Questions and answers
Can I use the example values for my own calculation?
The example values illustrate the calculation. Replace every input with your own information, especially dates, rates and the selected operation.
Why is zero momentum excluded?
The formula divides by momentum. As positive momentum approaches zero the wavelength grows without bound, so zero cannot produce a finite numeric result.
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method sources: openstax.org · nist.gov