LED Resistor Value Calculator pro is the solution to your headache,
Can an LED calculator solve your problems working with LEDs and Ohms law? Sure.
it is as simple as this just enter the info and hit the calculate button.
yeah as simple as that 😎

-Tired of picking the right resistor for your LEDs?
-you have LEDs and you are afraid of damaging them?
-you are working on hoppy projects and do you need to use some LEDs?
-you don't like the maths of calculating your resistor by paper and biro?
-You have a Resistor and don't know its value, or need a Resistor but don't know its Color code?
-then you are in the right place.
-Ohm's Calculator Included for productivity. 🛠