Magnetic Field Strength Converter
Convert between different magnetic field strength units including Ampere/meter, Kiloampere/meter, Milliampere/meter, Microampere/meter, Ampere turn/meter, Ampere/centimeter, Ampere/inch, Oersted, Abampere/meter, and more. Fast and accurate magnetic field strength conversion with comprehensive unit support.
Result
1 Ampere/meter = 0.012566 Oersted
Complete Guide to Magnetic Field Strength Conversion
Magnetic field strength conversion is essential across electrical engineering, electromagnetism, magnetic circuit design, transformer design, motor design, magnetic material characterization, magnetic field measurements, and countless applications where magnetic field intensity and magnetic field strength are essential. Whether you're calculating magnetic field strength in ampere per meter, converting between different magnetic field strength units, working with magnetic field measurements, converting between SI and CGS units, converting between different magnetic field strength units, or converting between different magnetic field strength units, our free online magnetic field strength converter makes it easy to convert between Ampere per meter, Kiloampere per meter, Milliampere per meter, Microampere per meter, Ampere turn per meter, Ampere per centimeter, Ampere per inch, Oersted, Abampere per meter, and other magnetic field strength units instantly. Understanding magnetic field strength units and conversions is crucial for accurate measurements in electrical engineering, electromagnetism, magnetic circuit design, and international communication.
Understanding Magnetic Field Strength Measurement Systems
Magnetic field strength (H) is a measure of the intensity of a magnetic field, representing the magnetic field per unit length. The International System of Units (SI) defines magnetic field strength in Amperes per meter (A/m), which is the magnetic field intensity produced by a current of one ampere flowing through a wire per meter of length. Understanding these units and their conversions is essential for accurate measurements across electrical engineering, electromagnetism, and magnetic circuit design applications.
SI Units (Scientific)
Ampere per Meter (A/m) - The Base Unit
Ampere per Meter is the SI base unit for magnetic field strength, representing the magnetic field intensity per unit length. One ampere per meter is the magnetic field strength produced by a current of one ampere flowing through a wire per meter of length. The Ampere per Meter serves as the foundation for all other magnetic field strength units, which use standard SI prefixes or historical relationships.
Ampere per Meter Multiples
- Kiloampere per Meter (kA/m): 1,000 A/m - Used for large magnetic fields, power transformers, large electromagnets
- Megaampere per Meter (MA/m): 1,000,000 A/m - Used for very large magnetic fields, industrial applications
Ampere per Meter Submultiples
- Milliampere per Meter (mA/m): 0.001 A/m - Used for small magnetic fields, precision applications
- Microampere per Meter (µA/m): 0.000001 A/m - Used for very small magnetic fields, sensitive measurements
Alternative SI Units
Ampere Turn per Meter (At/m) is equivalent to Ampere per Meter (A/m), since one turn equals one. Ampere per Centimeter (A/cm) equals 100 A/m, and Ampere per Inch (A/in) equals approximately 39.3701 A/m. These units provide alternative ways to express magnetic field strength based on different length units.
CGS Units
Oersted (Oe)
Oersted is a CGS unit of magnetic field strength, named after Hans Christian Ørsted. One Oersted equals (1000/4π) Amperes per meter, approximately 79.5775 A/m. The Oersted is commonly used in older literature and some engineering applications. The conversion factor is: 1 Oe = (1000/4π) A/m ≈ 79.5775 A/m, or equivalently, 1 A/m = (4π/1000) Oe ≈ 0.0125664 Oe.
Abampere per Meter (abA/m)
Abampere per Meter is an EMU (Electromagnetic Unit) of magnetic field strength. One Abampere per Meter equals 10 Amperes per meter (1 abA/m = 10 A/m). This unit is part of the CGS electromagnetic system and is used in some specialized applications. Abampere per Centimeter (abA/cm) equals 1,000 A/m.
EMU Unit
EMU of magnetic field strength equals 10 A/m (same as Abampere per Meter). This unit is used in theoretical physics and specialized electromagnetic calculations.
How to Convert Ampere per Meter to Oersted
Converting Ampere per Meter to Oersted is one of the most common magnetic field strength conversions, especially when working with magnetic circuits and electromagnetic devices. To convert from Ampere per Meter to Oersted, multiply the A/m value by (4π/1000), which equals approximately 0.0125664. This conversion factor comes from the definition: 1 Oersted = (1000/4π) Amperes per meter ≈ 79.5775 A/m, so 1 A/m = (4π/1000) Oe ≈ 0.0125664 Oe. For example, 1,000 A/m = 1,000 × (4π/1000) = 4π Oe ≈ 12.5664 Oe. This conversion is essential for understanding magnetic field strength measurements, where Ampere per meter is used in SI-based calculations while Oersteds are used in CGS-based systems and older engineering literature. The relationship is straightforward: simply multiply A/m by (4π/1000) or approximately 0.0125664 to get Oe, or multiply Oe by (1000/4π) or approximately 79.5775 to get A/m. For quick mental calculations, you can approximate 1 A/m ≈ 0.0126 Oe, though our converter uses the exact conversion factor (4π/1000) for precision. This conversion is particularly important when working with magnetic circuit analysis, transformer design, electromagnetic device specifications, comparing SI and CGS measurements, and understanding historical engineering literature.
Magnetic Field Strength vs Magnetic Flux Density: Understanding the Relationship
One of the most important concepts in magnetic field strength conversion is understanding the relationship between magnetic field strength and magnetic flux density:
- Magnetic Field Strength (H): The intensity of the magnetic field per unit length, measured in Amperes per meter (A/m) or Oersteds (Oe). It represents the driving force that produces magnetic flux.
- Magnetic Flux Density (B): The amount of magnetic flux per unit area, measured in Teslas (T) or Gauss (G). It represents the actual magnetic field strength in a material.
- Relationship: B = μ × H, where μ is the magnetic permeability of the material. In vacuum, B = μ₀ × H, where μ₀ is the permeability of free space (4π × 10⁻⁷ H/m).
The relationship is: B = μ × H, where μ is the magnetic permeability of the material. In vacuum, B = μ₀ × H, where μ₀ is the permeability of free space (4π × 10⁻⁷ H/m). Understanding this distinction helps clarify that magnetic field strength conversions measure the driving force, while magnetic flux density measures the actual magnetic field in a material.
Magnetic Field Strength Conversion Formulas
Our magnetic field strength converter uses these precise formulas for accurate conversions:
Ampere per Meter to Oersted:
Oe = A/m × (4π/1000) ≈ A/m × 0.0125664
Oersted to Ampere per Meter:
A/m = Oe × (1000/4π) ≈ Oe × 79.5775
Ampere per Meter to Kiloampere per Meter:
kA/m = A/m ÷ 1,000
Kiloampere per Meter to Ampere per Meter:
A/m = kA/m × 1,000
Ampere per Meter to Milliampere per Meter:
mA/m = A/m × 1,000
Milliampere per Meter to Ampere per Meter:
A/m = mA/m ÷ 1,000
Ampere per Meter to Ampere per Centimeter:
A/cm = A/m ÷ 100
Ampere per Centimeter to Ampere per Meter:
A/m = A/cm × 100
Ampere per Meter to Abampere per Meter:
abA/m = A/m ÷ 10
Abampere per Meter to Ampere per Meter:
A/m = abA/m × 10
Magnetic Field Strength Formula:
H = B / μ
Where H = magnetic field strength, B = magnetic flux density, μ = magnetic permeability
Magnetic Circuit Relationship:
H = MMF / l = (N × I) / l
Where H = magnetic field strength, MMF = magnetomotive force, l = path length, N = number of turns, I = current
Magnetic Field Strength Conversion Table
Quick reference for converting between common magnetic field strength units:
| Unit | A/m | Oe | kA/m | mA/m |
|---|---|---|---|---|
| 1 A/m | 1 | 0.012566 | 0.001 | 1,000 |
| 1 Oe | 79.577472 | 1 | 0.079577 | 79,577.472 |
| 1 kA/m | 1,000 | 12.566371 | 1 | 1,000,000 |
| 1 mA/m | 0.001 | 0.000013 | 0.000001 | 1 |
| 1 abA/m | 10 | 0.125664 | 0.01 | 10,000 |
| 10 A/m | 10 | 0.125664 | 0.01 | 10,000 |
| 50 A/m | 50 | 0.628319 | 0.05 | 50,000 |
| 100 A/m | 100 | 1.256637 | 0.1 | 100,000 |
| 500 A/m | 500 | 6.283185 | 0.5 | 500,000 |
| 1,000 A/m | 1,000 | 12.566371 | 1 | 1,000,000 |
| 5,000 A/m | 5,000 | 62.831854 | 5 | 5,000,000 |
| 10,000 A/m | 10,000 | 125.663706 | 10 | 10,000,000 |
| 10 Oe | 795.774715 | 10 | 0.795775 | 795,774.715 |
| 50 Oe | 3,978.873576 | 50 | 3.978874 | 3,978,873.576 |
| 100 Oe | 7,957.747152 | 100 | 7.957747 | 7,957,747.152 |
| 500 Oe | 39,788.735759 | 500 | 39.788736 | 39,788,735.759 |
| 1,000 Oe | 79,577.471518 | 1,000 | 79.577472 | 79,577,471.518 |
| 1 kA/m | 1,000 | 12.566371 | 1 | 1,000,000 |
| 5 kA/m | 5,000 | 62.831854 | 5 | 5,000,000 |
| 10 kA/m | 10,000 | 125.663706 | 10 | 10,000,000 |
| 100 mA/m | 0.1 | 0.001257 | 0.0001 | 100 |
| 500 mA/m | 0.5 | 0.006283 | 0.0005 | 500 |
| 1,000 mA/m | 1 | 0.012566 | 0.001 | 1,000 |
Common Magnetic Field Strength Conversion Examples
Ampere per Meter to Oersted Conversions:
- 1 A/m = 0.012566 Oe
- 10 A/m = 0.125664 Oe
- 50 A/m = 0.628319 Oe
- 100 A/m = 1.256637 Oe
- 500 A/m = 6.283185 Oe
- 1,000 A/m = 12.566371 Oe
- 5,000 A/m = 62.831854 Oe
Oersted to Ampere per Meter Conversions:
- 1 Oe = 79.577472 A/m
- 10 Oe = 795.774715 A/m
- 50 Oe = 3,978.873576 A/m
- 100 Oe = 7,957.747152 A/m
- 500 Oe = 39,788.735759 A/m
- 1,000 Oe = 79,577.471518 A/m
- 5,000 Oe = 397,887.35759 A/m
Ampere per Meter to Kiloampere per Meter:
- 1,000 A/m = 1 kA/m
- 5,000 A/m = 5 kA/m
- 10,000 A/m = 10 kA/m
- 50,000 A/m = 50 kA/m
- 100,000 A/m = 100 kA/m
- 1 kA/m = 1,000 A/m
Ampere per Meter to Milliampere per Meter:
- 1 A/m = 1,000 mA/m
- 0.1 A/m = 100 mA/m
- 0.5 A/m = 500 mA/m
- 10 A/m = 10,000 mA/m
- 100 A/m = 100,000 mA/m
- 1,000 mA/m = 1 A/m
Frequently Asked Questions (FAQ)
How do I convert Ampere per Meter to Oersted?
To convert Ampere per Meter to Oersted, multiply the A/m value by (4π/1000), which equals approximately 0.0125664. The formula is: Oe = A/m × (4π/1000) ≈ A/m × 0.0125664. For example, 1,000 A/m = 1,000 × (4π/1000) = 4π Oe ≈ 12.5664 Oe. One Oersted equals approximately 79.5775 Amperes per Meter. This conversion is essential for understanding magnetic field strength measurements, where Ampere per meter is used in SI-based calculations while Oersteds are used in CGS-based systems and older engineering literature.
How many Oersteds are in 1 Ampere per Meter?
One Ampere per Meter equals approximately 0.0125664 Oersteds (exactly 4π/1000 Oe). To convert A/m to Oe, multiply the A/m value by (4π/1000). For example, 100 A/m = 100 × (4π/1000) = 0.4π Oe ≈ 1.2566 Oe. This conversion is essential for understanding magnetic field strength measurements when working with CGS units.
How do I convert Oersted to Ampere per Meter?
To convert Oersted to Ampere per Meter, multiply the Oe value by (1000/4π), which equals approximately 79.5775. The formula is: A/m = Oe × (1000/4π) ≈ Oe × 79.5775. For example, 100 Oe = 100 × (1000/4π) = 100000/4π A/m ≈ 7,957.75 A/m. One Ampere per Meter equals approximately 0.0125664 Oersteds. This conversion is essential for understanding magnetic field strength measurements when working with SI units.
What is an Ampere per Meter in simple terms?
An Ampere per Meter is the SI unit of magnetic field strength, representing the magnetic field intensity per unit length. One ampere per meter is the magnetic field strength produced by a current of one ampere flowing through a wire per meter of length. It's essential for magnetic circuit analysis, transformer design, and electromagnetic device calculations.
What is an Oersted in simple terms?
An Oersted is a CGS unit of magnetic field strength, named after Hans Christian Ørsted. One Oersted equals (1000/4π) Amperes per meter, approximately 79.5775 A/m. The Oersted is commonly used in older literature and some engineering applications. It's part of the CGS electromagnetic system.
How do I convert Ampere per Meter to Kiloampere per Meter?
To convert Ampere per Meter to Kiloampere per Meter, divide the A/m value by 1,000. The formula is: kA/m = A/m ÷ 1,000. For example, 5,000 A/m = 5,000 ÷ 1,000 = 5 kA/m. One Kiloampere per Meter equals exactly 1,000 Amperes per Meter. This conversion is essential for understanding large magnetic field strength values in power transformers and large electromagnetic devices.
How do I convert Ampere per Meter to Milliampere per Meter?
To convert Ampere per Meter to Milliampere per Meter, multiply the A/m value by 1,000. The formula is: mA/m = A/m × 1,000. For example, 0.5 A/m = 0.5 × 1,000 = 500 mA/m. One Milliampere per Meter equals exactly 0.001 Amperes per Meter. This conversion is essential for understanding small magnetic field strength values in precision applications.
What is the difference between Magnetic Field Strength and Magnetic Flux Density?
Magnetic Field Strength (H) is the intensity of the magnetic field per unit length, measured in Amperes per meter (A/m) or Oersteds (Oe). Magnetic Flux Density (B) is the amount of magnetic flux per unit area, measured in Teslas (T) or Gauss (G). The relationship is: B = μ × H, where μ is the magnetic permeability of the material. In vacuum, B = μ₀ × H, where μ₀ is the permeability of free space.
Can I use this magnetic field strength converter for transformer design?
Yes! This magnetic field strength converter is perfect for transformer design, magnetic circuit analysis, and electromagnetic device calculations. Convert between Ampere per meter (used in SI-based calculations) and Oersteds (used in CGS-based systems) for transformer specifications, magnetic circuit design, and understanding electromagnetic device performance. For example, a transformer with 1,000 A/m = 12.5664 Oe.
How do I calculate Magnetic Field Strength from magnetomotive force?
To calculate Magnetic Field Strength from magnetomotive force, divide the magnetomotive force (MMF) by the length of the magnetic path: H = MMF / l, where H is magnetic field strength in A/m, MMF is magnetomotive force in At, and l is the path length in meters. For example, MMF of 1,000 At over 0.5 m = 1,000 / 0.5 = 2,000 A/m.
What units are supported in this magnetic field strength converter?
Our magnetic field strength converter supports 11 units including: Ampere per meter (A/m), Kiloampere per meter (kA/m), Milliampere per meter (mA/m), Microampere per meter (µA/m), Ampere turn per meter (At/m), Ampere per centimeter (A/cm), Ampere per inch (A/in), Oersted (Oe), Abampere per meter (abA/m), Abampere per centimeter (abA/cm), EMU of magnetic field strength, and more. All conversions use precise conversion factors based on international standards.
How accurate is this magnetic field strength converter?
Our magnetic field strength converter uses precise conversion factors based on international standards. Results are calculated with high precision and automatically formatted for optimal readability. All conversions follow official SI unit definitions and internationally recognized magnetic field strength unit relationships.
What are common magnetic field strength values in everyday applications?
Common magnetic field strength values: Earth's magnetic field (25-65 A/m), Small electromagnets (100-1,000 A/m), Transformers (1,000-10,000 A/m), Large power transformers (10-100 kA/m), Precision magnetic circuits (1-100 mA/m), Industrial electromagnets (1-10 kA/m), Magnetic relays (100-1,000 A/m).
How do I convert between SI and CGS magnetic field strength units?
To convert between SI (Ampere per meter) and CGS magnetic field strength units: 1 A/m = (4π/1000) Oe ≈ 0.0125664 Oe, 1 Oe = (1000/4π) A/m ≈ 79.5775 A/m, 1 abA/m = 10 A/m (EMU), 1 abA/cm = 1,000 A/m. The conversion factors differ between SI and CGS systems due to different base unit definitions.
Real-World Applications
Transformer Design and Analysis
Magnetic field strength conversion is fundamental in transformer design for calculating magnetic flux density, magnetic field distribution, and transformer performance. Converting between Ampere per meter (used in SI-based calculations) and Oersteds (used in CGS-based systems) helps engineers design transformers, analyze magnetic circuits, and ensure optimal performance. For example, a transformer with 5,000 A/m = 5 kA/m = 62.8319 Oe.
Magnetic Circuit Analysis
Magnetic circuit analysis requires magnetic field strength conversions for understanding magnetic flux, magnetic reluctance, and magnetic field distribution. Converting between different H units helps engineers analyze magnetic circuits, design electromagnetic devices, and optimize magnetic system performance. The relationship H = MMF / l is fundamental in magnetic circuit analysis.
Electromagnetic Device Design
Electromagnetic device design requires magnetic field strength conversions for motors, generators, solenoids, and other electromagnetic devices. Converting between Ampere per meter and Oersteds helps engineers design efficient electromagnetic devices, calculate magnetic field intensity, and ensure proper device operation. For example, a motor with 10,000 A/m = 10 kA/m = 125.6637 Oe.
Magnetic Material Characterization
Magnetic material characterization requires magnetic field strength conversions for measuring material properties, understanding hysteresis loops, and analyzing magnetic behavior. Converting between SI and CGS units helps researchers work with different measurement systems, compare results, and understand magnetic material properties across different unit systems.
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Tips for Magnetic Field Strength Conversion
- Quick Approximation: For A/m to Oe, multiply by 0.0126 (exact: 4π/1000 ≈ 0.0125664)
- Remember Key Values: 1 A/m = 0.0125664 Oe, 1 Oe = 79.5775 A/m, 1 kA/m = 1,000 A/m
- SI Prefixes: Standard SI prefixes apply (kilo, milli, micro, mega)
- CGS Units: 1 Oe = (1000/4π) A/m ≈ 79.5775 A/m, 1 abA/m = 10 A/m
- Common Conversions: 100 A/m ≈ 1.26 Oe, 1,000 A/m = 1 kA/m = 12.57 Oe
- Magnetic Field Formula: H = MMF / l = (N × I) / l
- SI vs CGS: 1 A/m = (4π/1000) Oe, 1 abA/m = 10 A/m (EMU)