Conversion Calculators

This resistor colour code calculator is designed to find the resistance and tolerance values of through-hole resistors.

This Ohm's law calculator is used to calculate power, current, voltage or resistance.

Conversion Calculators

• BTU to Joules Energy Conversion Calculator Convert BTU to Joules and Joules to BTU
• Capacitance Conversion Calculator Calculate conversions between capacitance units
• Decimal to Fraction Calculator Convert a decimal number into a fraction
• Length Conversion Calculator Convert metric and imperial units
• Power Conversion Calculator Convert all types of electrical power units using this calculator
• Pressure Conversion Calculator Perform conversions between pressure units
• Temperature Conversion Calculator Converting Celsius values to Fahrenheit values and Fahrenheit values to Celsius values.
• Volume and Mass Conversion Calculator Convert measurement units, including litres, ounces, quarts, feet, yards and more
• Weight Conversion Calculator Convert kilograms to grams, kilograms to pounds, and other units including tons, metric tons and ounces

Electrical Calculations

• Battery Life Calculator Calculate the hours of life left in your batteries
• LED Series Resistor Calculator Calculate the value of current-limiting resistors needed to connect multiple LEDs
• Time Constant Calculator Calculate resistor-capacitor (RC) time constant of a resistor-capacitor circuit