Decode a 4-band or 5-band resistor from its colour bands into resistance, tolerance and the min/max value range. Free, instant, no signup.
Formula: R = significant digits × multiplier (± tolerance)
How to use the Resistor Color Code Calculator
Enter your values. Fill in the fields with your numbers.
Calculate. Press Calculate to run the resistor color code calculator.
Use the result. Copy the result or try a related tool next.
Why use our Resistor Color Code Calculator
Instant results. Enter your figures and the resistor color code calculator returns an answer in seconds.
Free & private. Runs in your browser — no signup, and nothing is sent to a server.
Accurate. Uses standard formulas so you can rely on the numbers.
Free to use — premium coming soon
FREE
✓ Unlimited calculations
✓ Instant results
✓ No signup
PREMIUM
★ Remove ads
★ Save & compare scenarios
★ Export results
About the Resistor Color Code Calculator
Decode a 4-band or 5-band resistor from its colour bands into resistance, tolerance and the min/max value range. This resistor color code calculator does the maths for you so you get a fast, reliable answer without spreadsheets or manual calculation. Enter your values, hit Calculate, and read the result instantly.
Frequently asked questions
Is the resistor color code calculator free?
Yes — unlimited use, no account needed.
How accurate is it?
The resistor color code calculator uses standard, well-established formulas. Always double-check figures that matter.
By the Super Simple Digital Tools Team · Updated June 2026
Whether it's for work, study or everyday life, the Cubic Feet Calculator takes the hassle out of everyday calculations. Calculate the volume of a box or space in cubic feet, cubic yards, and cubic meters from length, width, and height. Free, instant, no signup.
Using it takes seconds: fill in the fields with your numbers, then press Calculate to run the cubic feet calculator, then copy the result or try a related tool next.
Instant results — Enter your figures and the cubic feet calculator returns an answer in seconds.
Ready to try it? Open the Cubic Feet Calculator and get your answer in seconds.
Instant results: Enter your figures and the cubic feet calculator returns an answer in seconds.
Free & private: Runs in your browser — no signup, and nothing is sent to a server.
Accurate: Uses standard formulas so you can rely on the numbers.
