Biot-Savart espira
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Biot-Savart Magnetic Field Calculator is an online tool that calculates the magnetic field strength generated by a circular loop carrying an electric current. The formula used is B = μ₀I/(2r), where B is the magnetic field, μ₀ is the magnetic constant (approximately 4π × 10^-7 T·m/A), I is the electric current, and r is the radius of the loop.
This calculator is useful in various situations, such as in the study of electromagnetism in physics, electrical engineering, and electronics. The magnetic field generated by a loop is important in applications such as electric motors, generators, and transformers. The Biot-Savart law is essential to understand how electric currents generate magnetic fields.
When using this calculator, it is essential to pay attention to the units of the quantities entered. The electric current must be in amperes (A) and the radius of the loop in meters (m). Additionally, it is crucial to remember that the formula is valid for a circular loop and that the magnetic field is calculated at the center of the loop.
The Biot-Savart Magnetic Field Calculator is a practical and easy-to-use tool that can be used by students, teachers, and professionals in engineering and physics to calculate and understand the behavior of the magnetic field in different situations.
Frequently asked questions
What is the unit of the calculated magnetic field?
The magnetic field is calculated in teslas (T).
Is the Biot-Savart formula valid for any type of loop?
No, the formula is only valid for a circular loop.
How can I use this calculator to calculate the magnetic field at different points of the loop?
This calculator only calculates the magnetic field at the center of the loop. To calculate the magnetic field at other points, you need to use other formulas or methods.
What are the main applications of the Biot-Savart law?
The Biot-Savart law is essential to understand how electric currents generate magnetic fields in electric motors, generators, transformers, and other applications.
How can I verify if the calculator results are correct?
Check the units of the entered quantities and ensure that the formula is valid for the situation. Additionally, it is always a good practice to compare the results with known values or with results obtained by other methods.