Calculators
Some of these can come in handy. The heat-stress index calculator could be very useful, for instance, for those of us pulling sleds and doing other strenuous training on hot summer days. You'll need to look up how to interpret the results..which is pretty straightforward.
And there is a wind-chill calculator.
And distance and volume conversions.
Useful info provided
here
Also:
Heat Acclimatization