STANDARD GENERAL PURPOSE VALUE

1k Resistor Color Code (1 kΩ)

A 1k ohm (1,000 Ω) resistor is a ubiquitous component in electronics used for current limiting, transistor biasing, and audio attenuation. In the 4-band code, its colors are Brown, Black, Red, and Gold. In the 5-band precision code, its colors are Brown, Black, Black, Brown, and Brown.

Quick Answer • Color Bands BreakdownIEC 60062 Standard

4-BAND (±5%)Standard Carbon/Metal Film

Brown(1st Digit (1))

Black(2nd Digit (0))

Red(Multiplier (×100))

Gold(Tolerance (±5%))

5-BAND (±1%)Precision Metal Film

Brown(1st Digit (1))

Black(2nd Digit (0))

Black(3rd Digit (0))

Brown(Multiplier (×10))

Brown(Tolerance (±1%))

Customize in Live Calculator BelowTolerance: ±5% (Gold band) or ±1% (Brown band)

Technical Specifications

Nominal Value: 1 kΩ (1,000 Ω)
Standard Series: E12, E24, E48, E96, E192
Acceptable Measurement Range: 950 Ω to 1,050 Ω (at ±5%) | 990 Ω to 1,010 Ω (at ±1%)
Typical Power: 1/4 Watt (0.25 W) axial through-hole
Max Working Voltage: 250V

SMD Chip Markings

1023-Digit SMD (10 × 10² = 1,000 Ω)

10014-Digit Precision SMD (100 × 10¹ = 1,000 Ω)

01BEIA-96 1% SMD (01 = 100, B = ×10)

Common Real-World Circuit Applications

BJT transistor base current limiting (e.g. 2N2222, BC547 switches)Status LED ballast resistor for 12V DC power suppliesLow-pass RC filter input resistor for audio and sensor filteringVoltage divider networks and audio mixer input padsCurrent sensing in low-current operational amplifier circuits

Interactive Tool

Resistor Color Code Calculator

Select band count and click colors below to calculate resistance and tolerance.

Resistor Band SystemShortcuts: 3 · 4 · 5 · 6

4-Band Carbon Film ResistorReading direction: Left to Right

Resistance ValueStandard E12 / E24

1kΩ±5%

Guaranteed Range:±5%

950 Ω↔1.05 kΩ

Standard SeriesE12, E24

Temp. CoefficientN/A (6-band only)

Color Band Sequence:

Common Commercial ValuesClick to load

Select Band Colors

Click any swatch to change value

Live Synced

1st Band1st Digit

2nd Band2nd Digit

3rd BandMultiplier

4th BandTolerance

Inverse Solver

Reverse Resistor Color Code Lookup

Enter resistance value in Ohms (Ω) to determine the exact color bands.

Enter Target Resistance

Live Validation

Resistance ValueExamples: 4.7k, 220, 1M, 0.47

Ohms

✓Recognized: 4.7 kΩ (4,700 Ω)

Band Count

Tolerance

Quick Presets:Click to test

Calculated Color BandsStandard E24

Exact Resistance:4.7 kΩ±5%

Color Bands Sequence (Left to Right):

Band Breakdown:

Want to tweak these bands?

FREQUENTLY ASKED QUESTIONS

Common Questions About 1k Resistor Color Code (1 kΩ)

What are the colors of a 1k resistor?▼

The color bands on a standard 4-band 1k ohm resistor are Brown, Black, Red, and Gold. The red band indicates a multiplier of 100, resulting in 10 × 100 = 1,000 Ω (1 kΩ).

What is the tolerance of a 1k resistor with a gold stripe?▼

A gold fourth stripe indicates a tolerance of ±5%. This means the actual resistance can vary by ±50 ohms, giving an acceptable operating range from 950 Ω to 1,050 Ω.

What is the 5-band color code for a 1k precision resistor?▼

For a 5-band 1% resistor, the stripes are Brown (1), Black (0), Black (0), Brown (×10 multiplier), and Brown (±1% tolerance).

IEC 60062 Standard Table

Complete Resistor Color Code Chart

View the full 12-color lookup matrix covering significant figures 0–9, multipliers from 0.01 to 1G, and tolerance bands from ±0.05% to ±20%. Includes searchable values and instant CSV export.

Explore Full Color Chart→

Engineering Guide

How to Read & Calculate Resistor Bands

Learn step-by-step reading rules, standard E-series decade values (E12, E24, E96), memory mnemonics, and surface-mount (SMD) 3-digit and EIA-96 code conversion formulas.

Read Full Engineering Guide→

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