When you change a field, just click somewhere else and you will get the answers to the other fields.
Temperature conversions:

Enter the temperature in °F:
OR
Enter the temperature in °C:
OR
Enter the temperature in Kelvin:

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Distance conversions:

Enter in a value in inches:
OR
Enter in a value in centemeters:
OR
Enter in a value in feet:
OR
Enter in a value in meters:
OR
Enter in a value in miles:

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Time conversions:

Enter in a value for seconds:
OR
Enter in a value for minutes:
OR
Enter in a value for hours:
OR
Enter in a value for days:
OR
Enter in a value for weeks:

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Mass conversions:

Enter in a value for ounces:
OR
Enter in a value for grams:
OR
Enter in a value for pounds: