Preferred resistor values
Find nearest E3–E192 values or two-part combinations and ratio pairs.
Development preview. Check the assumptions below before relying on a result. Calculations run in your browser.
How it calculates
Model: Choose the published value with minimum absolute resistance error
Worked example
These are the calculator's default inputs. Change any input above to recalculate.
Inputs
- Search
- nearest
- Preferred series
- E24
- Target resistance
- 4700 Ω
- Target R2/(R1+R2)
- 0.25
- Ratio-pair total
- 20000 Ω
- Total window
- 10 %
Results
- Nearest single value
- 4700 Ω
- Single-value error
- 0 %
- Best R1
- 4700 Ω
- Best R2
- Not used Ω
- Best combined resistance
- 4700 Ω