Àwọn

Decode 4/5/6-band resistor colors into a value - or reverse a value into bands.

Àwọn Ìṣàmúlò-ètò

Àwọn àwọn ìṣàmúlò-ètò

Band 1 (1st digit)

Band 2 (2nd digit)

Band 3 (3rd digit) ? Lò fún àwọn résístọ̀ 5- atí 6-bàntìnì.

Àwọn ààyè-iṣẹ́ ìṣàfarawé

Àwọn ìṣàmúlò-ètò

Àwọn ààyè-iṣẹ́ ?

Móòdù ìṣàfarawé: àwọn fálù láti fi àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò

Àwọn ìṣàfarawé —

Àwọn ìkúndùǹ —

Àwọn —

Àwọn àwọ̀ àká-ìṣàmúlò-ètò —

Àwọn Àtòjọ-ẹ̀yàn àwọn ìṣàmúlò-ètò

Ńlà àwọn àwọn ààtò àtòjọ-ẹ̀yàn yìí?

Àkóónú ìṣàmúlò-ètò yìí

The resistor color code is the scheme of coloured bands painted on a resistor to show its value, used because the parts are too small to print numbers on. Reading left to right, the first bands are significant digits, the next band is a power-of-ten multiplier and the last band is the tolerance. For a 4-band part the value is (10 × digit1 + digit2) × 10^multiplier ohms; 5- and 6-band parts add a third significant digit for tighter precision (and, on 6-band parts, a temperature-coefficient band). Each colour maps to a fixed number: black 0, brown 1, red 2, orange 3, yellow 4, green 5, blue 6, violet 7, grey 8, white 9, with gold and silver serving as ×0.1 and ×0.01 multipliers or ±5% and ±10% tolerances.

As a worked example, the classic brown-black-red-gold band pattern reads as digits 1 and 0, a ×100 multiplier and ±5% tolerance: (10 + 0) × 100 = 1,000 Ω, i.e. a 1 kΩ ±5% resistor whose true value lies anywhere from 950 Ω to 1,050 Ω. Decode any part by selecting the colour of each band from the drop-downs and the calculator returns the nominal resistance, the tolerance and the guaranteed value range.

Switch to reverse (encode) mode to go the other way: type a target resistance and the tool rounds it to the nearest value the digit bands can express, chooses the multiplier to match, and lists the band colours you would read off a real resistor of that value — handy when you have a schematic value and need to find or verify the physical part on your bench.

Àwọn Àtòjọ-ẹ̀yàn

Bawo ní àwọn à

The first two (or three) bands give the significant digits, the next is a ×10ⁿ multiplier and the last is the tolerance. Brown-Black-Red-Gold = 1, 0, ×100, ±5% = 1 kΩ ±5%.

Kini idi ti àwọn ààyè-iṣẹ́ ìṣàfarawé kọ̀ǹpútà?

Àwọn ìṣàfarawé nípa bí àwọn ìgbàdálẹ̀ tòjú tí lè ṣílọ̀ nípa àwọn

Bawo ní móòdù ìṣàfarawé àwọn ààyè-iṣẹ́ ṣè?

Ó dẹ́kun àwọn ààyè rẹ̀ sí àwọn fálù tí a tì ní ìwọ̀n tí àwọn àwọn ààyè àwọn díẹ̀tì lè sọ, láti ààyè yìí, ò yań àwọn àwọn fálù tí a tì fi pamọ́ láti jẹ́ pé ìṣàfarawé kọ̀ǹpútà náà ní pàtó - àwọn àwọ̀ tí o tì kààdé nípa àwọn àwọn fálù tí a tì fi pamọ́.

Kini iyatọ laarin 4-, 5- ati 6- band resistors?

4-band resistor ní àwọn bàǹtìràn àwọn àdírẹ̀sì meji; 5-band á fi àwọn bàǹtìràn àwọn àdírẹ̀sì kẹtà kun fún àwọn ìṣàfarawé fún àwọn àwọn ìṣàfarawé tí a fi pamọ́ bi ±1%; àti 6-band á fi bàǹtìràn àwọn

Ìgúnrégé wo nínú àwọn ìsàlẹ̀-ilà mìíràn nínú àwọn à

Start from the band nearest an end and read toward the tolerance band, which is usually gold or silver and slightly separated from the rest. If gold or silver sits at one end, that is the tolerance band, so read from the opposite end.

Kini idi ti àwọn àwọn ààyè-iṣẹ́ ọ̀fẹ́ àti àwọn ààyè-iṣẹ́ àwọn?

In the multiplier position gold means ×0.1 and silver means ×0.01, giving sub-ohm values. In the tolerance position gold means ±5% and silver means ±10% — the two most common everyday tolerances.

Kini idi ti a kò lè fi àwọn ìṣàfarawé àwọn ìṣàmúlò-ètò mìíràn pọ̀ nínú àkódì?

The bands give a nominal value plus a tolerance window. A ±5% 1 kΩ resistor may legitimately measure anywhere from 950 Ω to 1,050 Ω, and temperature and age can shift it further, so a small mismatch on a multimeter is completely normal.

API — ló àwọn ìṣàmúlò-ètò yìí láti inú ìṣàmúlò-ètò

Fi àwọn ìṣàmúlò-ètò yìí kọ̀ǹpútà yìí láti jẹ́ ààyè-iṣẹ́ JSON tí a tí fi pamọ́ - kò ní bọ́tìnì kan tí a fẹ́. Fi àwọn fálù ààyè-iṣẹ́ sílẹ̀ sí bí àwọn àwọn ìṣàmúlò-ètò àti JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka àwọn àkọlé API kíkún →

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

GET https://calculator.free/api/v1/resistor-color-code/

curl

curl "https://calculator.free/api/v1/resistor-color-code/?mode=decode&bands=4&band1=1&band2=0&multiplier=2&tolerance=5"

JavaScript `fetch()`

const r = await fetch(
  "https://calculator.free/api/v1/resistor-color-code/?" + new URLSearchParams({
    "mode": "decode",
    "bands": "4",
    "band1": "1",
    "band2": "0",
    "multiplier": "2",
    "tolerance": "5"
  }));
const data = await r.json();
console.log(data.results);

Results are estimates for general guidance only, not financial, medical or tax advice.

Àkóónú ìṣàmúlò-ètò yìí

Àwọn Àtòjọ-ẹ̀yàn

Àwọn Ìṣàmúlò-ètò Ìṣàmúlò-ètò

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

curl

JavaScript fetch()

JavaScript `fetch()`