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Resistor Color Code

Science & Engineering

4/5-band decode & encode, E24 series

Quick Answer

Resistor Color Code: 4/5-band decode & encode, E24 series. Resistor Color Code uses standard science & engineering formulas to compute accurate results instantly.

Band 1 (digit)

Brown

Band 2 (digit)

Black

Multiplier

Red

Tolerance

Gold
1 kΩ ±5%
Range 950 Ω ~ 1.05 kΩ
← read from tolerance-opposite end

Calculation steps

  1. 1Digits 10 × 100 = 1 kΩ
  2. 2Tolerance ±5% → range 950 Ω ~ 1.05 kΩ

Color code table

ColorDigitMultiplierTolerance
Black0×1—
Brown1×10±1%
Red2×100±2%
Orange3×1000—
Yellow4×10000—
Green5×100000±0.5%
Blue6×1000000±0.25%
Violet7——
Grey8——
White9——
Gold—×0.1±5%
Silver—×0.01±10%
Reading direction: the tolerance band (gold/silver, or a gap before it) sits at the RIGHT end — read from the opposite side. 4-band = 2 digits + multiplier (general purpose, ±5%/±10%); 5-band = 3 digits + multiplier (precision, ±1% and better). Common values follow the E24 series (10, 11, 12, 13, 15, 16, 18, 20, 22, 24, 27…).

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How to Use

  1. Enter known quantities: fill values and confirm units in the Resistor Color Code.
  2. Instant solution: unknowns solve live with the formula shown transparently.
  3. Use constant/material tables: standard physical constants and material data are listed on this page.
  4. Compare conditions: change inputs to compare scenarios.

Key Points

  • Resistor Color Code is a free online science & engineering tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: 4/5-band decode & encode, E24 series.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Resistor Color Code formula

Resistor Color Code uses standard science & engineering formulas to compute accurate results instantly.

FAQ

How do I use the Resistor Color Code?
Open the page and fill in the input fields — results update automatically. 4/5-band decode & encode, E24 series.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on CODATA recommended constants and standard physics formulas. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Resistor Color Code[EB/OL]. https://www.yijiansuan.com/en/c/science/resistor-color

Results provided by this tool are for reference only and do not constitute professional advice.