4 bands
BrownBlackRedGold
1 kΩ · ±5% · 950 Ω–1.05 kΩ
Common resistor value
This finite reference shows exact four-band and five-band codes plus their tolerance ranges.
Private browser calculation
The four-band example uses ±5%; the five-band example uses ±1%. Both are calculated without rounding.
BrownBlackRedGold
1 kΩ · ±5% · 950 Ω–1.05 kΩ
BrownBlackBlackBrownBrown
1 kΩ · ±1% · 990 Ω–1.01 kΩ