How to use the electric field from voltage calculator
Find the uniform electric field between two plates from the voltage and the gap. Enter voltage across gap, plate gap in the fields above; the electric field are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “electric field between plates”, “field strength from voltage”, “V over d”, “calculate electric field from voltage”, “find electric field”.
Formula
Variables
- V — Voltage across gap (V)
- d — Plate gap (mm)
Worked example
With voltage across gap = 12 V, plate gap = 3 mm, the calculator gives electric field ≈ 4,000 V/m; electric field ≈ 4 kV/m.
Frequently asked questions
What is the electric field from voltage calculator used for?
Find the uniform electric field between two plates from the voltage and the gap. It helps with questions such as “electric field between plates”, “field strength from voltage”, “V over d”.
What is the formula for the electric field from voltage calculation?
Electric field (V/m) = V / (d / 1000). Electric field (kV/m) = [Electric field] / 1000. Here V is voltage across gap (V), d is plate gap (mm).
What inputs do I need for the electric field from voltage calculator?
You need voltage across gap in V, plate gap in mm. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the electric field from voltage calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the electric field from voltage result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.