About

Electronic circuit design relies on precise component values. Misinterpreting a resistor's magnitude by a factor of one thousand often results in immediate component failure, signal distortion, or safety hazards. This utility converts resistance from Kilo-ohms (kΩ) to Ohms (Ω), bridging the gap between schematic shorthand and raw component specifications.

The conversion is critical when calculating current limits or voltage dividers where mixed units (kilo-ohms versus ohms) can lead to calculation errors. This tool also cross-references standard E-Series resistor values, aiding engineers in selecting the closest commercially available component.

Formulas

The relationship between Kilo-ohms and Ohms is linear, based on the metric prefix "kilo" representing a factor of one thousand. The conversion formula is:

R_Ω = R_kΩ × 1000

Where:

R_Ω is the resistance in Ohms.
R_kΩ is the resistance in Kilo-ohms.

Reference Data

Resistance (kΩ)	Resistance (Ω)	Standard Series	Color Code (4-Band)
0.1 kΩ	100 Ω	E12, E24	Brown, Black, Brown, Gold
0.22 kΩ	220 Ω	E12, E24	Red, Red, Brown, Gold
0.33 kΩ	330 Ω	E12, E24	Orange, Orange, Brown, Gold
0.47 kΩ	470 Ω	E12, E24	Yellow, Violet, Brown, Gold
1.0 kΩ	1,000 Ω	E12, E24	Brown, Black, Red, Gold
2.2 kΩ	2,200 Ω	E12, E24	Red, Red, Red, Gold
4.7 kΩ	4,700 Ω	E12, E24	Yellow, Violet, Red, Gold
5.6 kΩ	5,600 Ω	E12, E24	Green, Blue, Red, Gold
10 kΩ	10,000 Ω	E12, E24	Brown, Black, Orange, Gold
22 kΩ	22,000 Ω	E12, E24	Red, Red, Orange, Gold
47 kΩ	47,000 Ω	E12, E24	Yellow, Violet, Orange, Gold
100 kΩ	100,000 Ω	E12, E24	Brown, Black, Yellow, Gold
1000 kΩ	1,000,000 Ω	E12, E24	Brown, Black, Green, Gold

Frequently Asked Questions

Schematics prioritize readability and density. Using kΩ avoids printing long strings of zeros. For example, writing 4.7 kΩ is cleaner and less prone to misreading than 4700 Ω, especially on crowded circuit diagrams.

Using a 100 Ω resistor where 100 kΩ is required increases current flow by a factor of 1000. This typically leads to immediate component burnout, blown fuses, or damage to active components like transistors and ICs.

No. This tool converts nominal resistance values. Real-world resistors have tolerances (e.g., ±5% or ±1%), meaning the actual measured resistance will vary slightly from the calculated nominal value.

Color codes represent the value physically on the component. The multiplier band changes based on the magnitude. For 1 kΩ (1000 Ω), the multiplier is Red (10²) for 4-band resistors, or conversely interpreted based on significant digits.