RedCrab Calculator

# Units of measurement

• RedCrab can calculate with units of measurement

• Units can be allocated to a number

• A number of units is predefined and allocated in different groups

• Mathematical terms which contains units of the same group and the same dimension can be added and subtracted

• Multiplication and Division are possible without restrictions if the calculations make sense

Make no sense

ha âˆ™ ha
3km / 2km

hectare * hectare
kilometre / kilometre

Correct is 3km / 2 = 1.5 km
3km + 2km = 5km kilometre + kilometre
3km + 245m = 3245m kilometre + metre
12m + 5yd = 18.123yd metre + yard
5yd + 12m = 16.572m metre + yard
4m âˆ™ 5m = 20m2 metre âˆ™ metre
2ha + 950m2 = 20950m2 hectare + square metre
650km / 5.5h = 118.18km/h Kilometre / hour

• The result displays the unit of the right operand

• In the unit input box on the tool bar, you can input a preferred unit of measurement, which will be shown instead

• The preferred unit of measure is ignored if the result is incompatible

Example
• If the default presetting for units is miles, all length are displayed in miles

• With the feature formatting of results, a preferred unit can be assigned to a variable

• In the example below the result of x is displayed in yard and y is displayed in miles

• Info: You can open the window for formatting with a double-click on the variable

• New units can be derived from the predefined units of measurement
dm = 0.1m
3dm + 25cm = 55cm

• The names of the units can be overloaded by assigning a value to them

• In the example, m is defined as a variable with a value of 15. In this case, m cannot be used as a unit of measurement

mÂ  = 15

• The feature unit of measure can be switch off in the group Settings->Tools

List of predefiened units of measurement