Resistor Divider

Compute Vout, current, and resistor power for 2- or 3-resistor dividers

V
V

R1 (Top Resistor)

Ω

R2 (Bottom Resistor)

Ω

Load & Environment

°C
Design looks good
On Target
3.299V
Output Voltage
−0.03%
Error vs Target
206.2µA
Divider Current

Worst-case band 3.276 V – 3.321 V (−0.68% / +0.68%) · target 3.300 V inside

R_total 24.25 kΩ · R_th 5.443 kΩ

+-VIN5.00 VR1 8.25 kΩ (tol 1%)P(max): 357 µW / 100 mWP 0.36% · V 2.3% of 75 VR2 16 kΩ (tol 1%)P(max): 687 µW / 100 mWP 0.69% · V 4.4% of 75 V

Results

Output Voltage(V_out)3.299V
Output Min (worst case)(V_out(min))3.276V
Output Max (worst case)(V_out(max))3.321V
Output Error vs Target(ε)−0.03%
Divider Current(I)206.2µA
Total Resistance(R_total)24.25kΩ
Output Impedance(R_th)5.443kΩ

Resistor Stress (worst case)

Worst-case power and voltage per resistor against its rating and package limit
Powerof ratingVoltageof package max
R1357 µW0.36%1.72 V2.3%of 75 V
R2687 µW0.69%3.32 V4.4%of 75 V

Power vs the rating derated for 25 °C ambient (100% of nameplate); warning above the 50% derating limit. Voltage vs the package’s typical working voltage; warning above 80%.

Buy Resistors (Digi-Key)

Find R1 on Digi-Key
8.25 kΩ, 1%, 1/10 W, 0603
Find R2 on Digi-Key
16 kΩ, 1%, 1/10 W, 0603

Created by Catlynn Nguyen & Jie Chai · 2026