calc.engineer / PCB & Electronics / Voltage Divider

Voltage Divider v1.0.0

Calculates output voltage, current draw, and power dissipation for a resistive voltage divider. Given an input voltage Vin and two resistor values R1 (upper) and R2 (lower), computes Vout = Vin * R2 / (R1 + R2), divider current, individual resistor power dissipation, and the division ratio. Essential for biasing circuits, level shifting, ADC input scaling, and feedback networks. Use before trace_width to size traces for divider current, or chain from a power supply output to verify signal levels.

feeds trace_width →feeds rc_filter →
Input voltage in volts (V). Must be positive.
Upper resistor value in ohms (R1), connected between Vin and Vout node.
Lower resistor value in ohms (R2), connected between Vout node and ground.
Fill in the inputs and Compute to see the structured result.

From an agent (MCP) or the API

curl -X POST https://calc.engineer/api/voltage_divider \
  -H "Content-Type: application/json" \
  -d '{"vin": …, "r1_ohm": …, "r2_ohm": …}'

MCP: connect to https://calc.engineer/mcp and call voltage_divider.

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