FormulaSimLab is a clean, fast, and fully offline electronics calculation app designed for students, hobbyists, technicians, and engineers who want clarity instead of clutter.

Instead of forcing you into fixed calculations, FormulaSimLab always starts by asking a simple question:
“Which parameter do you want to calculate?”
You choose the unknown value, enter the known ones, and the app instantly solves it for you.

🔧 All Essential Electronics Formulas in One App

In daily practice, these formulas are usually scattered across different calculators, websites, or books. FormulaSimLab brings them together in one unified calculator, with a consistent interface and clear circuit diagrams for every formula.

📐 Included Formulas & Calculations

FormulaSimLab currently includes 10 essential electronics formulas, each with full parameter selection:

1. Ohm’s Law
   Calculate V, I, or R with a visual circuit diagram and clear unit labels.

2. Electric Power
   Calculate P, V, or I using the power formula, ideal for quick energy and load checks.

3. Voltage Divider
   Calculate Vin, Vout, R1, or R2 with a complete divider schematic clearly shown on screen.

4. Series Resistors
   Choose the number of resistors, enter individual values, and instantly calculate total resistance (Req).

5. Parallel Resistors
   Calculate equivalent resistance for multiple parallel resistors using the correct reciprocal formula.

6. RC Time Constant
   Calculate the time constant (τ) using resistance and capacitance values, perfect for timing and filter basics.

7. Capacitive Reactance
   Calculate Xc using frequency and capacitance, commonly needed in AC circuit analysis.

8. Op-Amp Non-Inverting Amplifier
   Calculate Av, Rf, or Rg, with a clear non-inverting op-amp circuit diagram.

9. Op-Amp Inverting Amplifier
   Calculate Av, Rf, or Rin, including the correct negative gain relationship and schematic.

10. LED Series Resistor
    Calculate R, Vs, Vled, or Iled, making it easy to safely design LED circuits.

🧠 Designed for Learning and Real Use

Every calculation screen includes:

• A clear formula display

• Unit-aware input fields

• Instant result updates

• A visual circuit diagram that matches the calculation

This makes FormulaSimLab useful not only as a calculator, but also as a learning and reference tool.

⚡ Simple, Fast, and Offline

• No accounts

• No data collection

• No internet required

• No ads

• No distractions

Just open the app, choose a formula, select what you want to calculate, and get the result instantly.

🎯 Who Is FormulaSimLab For?

• Electronics students

• Makers & hobbyists

• Technicians

• Engineers

• Anyone who wants quick, reliable electronics calculations in one place

FormulaSimLab replaces multiple calculators with one consistent, visual, and easy-to-use electronics toolkit