The calculator has in-built units conversions
and constants. Using
conventional calculators and reference books it is often difficult to find a
conversion factor between the pair of units you are dealing with and
you are forced to convert in several error prone steps. This problem is
eliminated with the units conversion facility. The conversion function also
eliminates the risk of confusion about 'which way' to use a factor that
arises when converting between different units systems of dimensionally
Example using units conversion
Suppose you have a value for a property, dynamic
viscosity say, quoted in non-SI units, and the formula you are computing is in
SI. First, enter the value into the calculator display. Next, click the
button and select the property dynamic viscosity from the Properties box.
Then in the From box select the set of units in which the value has been
entered (e.g. slug/ft-sec). Now select the desired units in the To box. If the
desired units are SI, you can just click the SI button, rather than searching
for them in the drop down edit box. Finally click the OK button (or return on
the keyboard) and the converted value will be shown in the calculator display.
You can click the Cancel button to return to the calculator without
performing any conversion.
Now that the conversion has been set up, you can use the same conversion on
another value using the cnv> button. Any value can now be instantly
converted from slug/ft.s to kg/m.s using this button. To convert back from
kg/m.s to slug/ft.s use the shift button which changes the "cnv>"
button to "<cnv", which does the reverse conversion.
You can use the Find button to search for a
property or units from the properties database.
To modify the properties database press the
Edit button next to the properties or units.
Currency conversions are supplied to convert between the Euro and those European
currencies that have fixed conversion rates, i.e. those where the Euro is
adopted. Some European countries have retained their own currency, either
because they are not in the European Union, or because they have chosen to
retain their currency (e.g. Great Britain). Therefore these currencies, along
with non-European currencies, have spot conversion rates which can be expected
to change over time. Updated conversion rates will be posted to the
calculator.org website periodically.
Obviously currency is outside the scope of the SI units system. The "SI" unit
for currency is the Euro, which simply means it is the default currency.