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Tools / Voltage Divider

🔌 Voltage Divider

Calculate output voltage, or find resistor values for a desired ratio.

Vin (V)

R1 — top (Ω) Vin → Vout node

R2 — bottom (Ω) Vout node → GND

Vin (V)

Target Vout (V)

Known resistor (Ω)

Which is known?

Results

Vout

–

R1

–

R2

–

Idle current

–

© 2026 black-ghost-off. Open source. Built 2026-08-12 12:48 UTC