Electronics
Inductance Calculator
Size coil inductance by entering the number of turns, core material, coil area, and length. Great for filters and RF experiments.
Estimate inductance from turns, coil radius, length, and core material.
Solenoid inductance
L = μ₀ μᵣ N² A / l
μ₀ is vacuum permeability (4π × 10⁻⁷ H/m). μᵣ is the relative permeability of the core. A is cross-sectional area (m²) and l is coil length (m).
How to use
- Enter the number of turns and coil dimensions.
- Pick a core material to set the relative permeability or type a custom value.
- Review inductance in henries with millihenry and microhenry conversions.
Example
Input: Turns = 120, Radius = 1.5 cm, Length = 6 cm, Core = Ferrite (μᵣ ≈ 200)
Output: Inductance ≈ 1.35 mH
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for Inductance Calculator: inductance calculator, coil inductance calculator, solenoid inductance calculator, air core inductance calculator. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic. Each resource is interlinked so crawlers (and readers) can discover the next best action within a couple of clicks—one of the easiest ways to lift topical authority.
Deep dive & study plan
The Inductance Calculator is a go-to tool whenever you need to estimates inductance for air-core and ferrite-core coils.. It focuses on inductance, coil, henry, which means searchers often arrive with intent-heavy queries like “how to inductance calculator quickly” or “inductance calculator formula explained.” Use this calculator to capture those intents and keep learners on the page long enough to send positive engagement signals.
Under the hood, the calculator leans on μ₀ is vacuum permeability (4π × 10⁻⁷ h/m). μᵣ is the relative permeability of the core. a is cross-sectional area (m²) and l is coil length (m).—that’s why we surface the full expression (“L = μ₀ μᵣ N² A / l”) directly above the interactive widget. When you embed that formula inside H2s or supporting paragraphs, you help both humans and crawlers understand what entity the page represents.
Execution matters as much as the math. Follow the built-in procedure: Step 1: Enter the number of turns and coil dimensions. Step 2: Pick a core material to set the relative permeability or type a custom value. Step 3: Review inductance in henries with millihenry and microhenry conversions.. Each numbered instruction is short enough to scan on mobile but descriptive enough to satisfy Google’s Helpful Content guidelines. Encourage students to jot down units, double-check signs, and compare answers with the Example card to build confidence.
The Example section itself is packed with semantic clues: “Turns = 120, Radius = 1.5 cm, Length = 6 cm, Core = Ferrite (μᵣ ≈ 200)” leading to “Inductance ≈ 1.35 mH.” Pepper similar narratives throughout your copy (and internal links from related guides) so canonical search intents are answered without pogo-sticking back to Google.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Link out to at least two related calculators to keep readers exploring your topical hub.
FAQ & notes
Does wire thickness matter?
Wire diameter only impacts resistance. Inductance depends on turns, area, length, and core permeability.
Can I use this for toroidal cores?
The formula targets solenoid coils. Modify inputs or use toroid-specific equations for best accuracy.
What formula does the Inductance Calculator use?
μ₀ is vacuum permeability (4π × 10⁻⁷ H/m). μᵣ is the relative permeability of the core. A is cross-sectional area (m²) and l is coil length (m).
How do I use the Inductance Calculator?
Enter the number of turns and coil dimensions. Pick a core material to set the relative permeability or type a custom value. Review inductance in henries with millihenry and microhenry conversions.