Voltage Regulation Calculator

Find the percentage voltage regulation of a supply.

Voltage regulation (%) 5

Formula: %VR = (V_nl − V_fl) ÷ V_fl × 100

Step-by-step with your numbers:

1. Values used:

2. No-load voltage = 12.6 V

3. Full-load voltage = 12 V

5. Voltage regulation = 5%

Did we solve your problem today?

Voltage regulation measures how much a supply's voltage sags from no load to full load.

The math behind it

%VR = (V_no-load − V_full-load) ÷ V_full-load × 100. Lower is better.

12.6 V to 12.0 V → 5% regulation.

What's a good value?

Lower percentages mean a stiffer, better-regulated supply.