# Convert Square kilometer (km²) (Area)

- Choose the right category from the selection list, in this case 'Area'.
- Next enter the value you want to convert. The basic operations of arithmetic: addition (+), subtraction (-), multiplication (*, x), division (/, :, ÷), exponent (^), square root (√), brackets and π (pi) are all permitted at this point.
- From the selection list, choose the unit that corresponds to the value you want to convert, in this case '
**Square kilometer**[**km²**]'. - The value will then be converted into all units of measurement the calculator is familiar with.
- Then, when the result appears, there is still the possibility of rounding it to a specific number of decimal places, whenever it makes sense to do so.

### Utilize the full range of performance for this units calculator

With this calculator, it is possible to enter the value to be converted together with the original measurement unit; for example, '**198 Square kilometer**'. In so doing, either the full name of the unit or its abbreviation can be usedas an example, either '**Square kilometer**' or '**km2**'. Then, the calculator determines the category of the measurement unit of measure that is to be converted, in this case 'Area'. After that, it converts the entered value into all of the appropriate units known to it. In the resulting list, you will be sure also to find the conversion you originally sought. Regardless which of these possibilities one uses, it saves one the cumbersome search for the appropriate listing in long selection lists with myriad categories and countless supported units. All of that is taken over for us by the calculator and it gets the job done in a fraction of a second.

Furthermore, the calculator makes it possible to use mathematical expressions. As a result, not only can numbers be reckoned with one another, such as, for example, '**(98 * 75) km2**'. But different units of measurement can also be coupled with one another directly in the conversion. That could, for example, look like this: '**45 Square kilometer + 22 Square kilometer**' or '52mm x 29cm x 6dm = ? cm^3'. The units of measure combined in this way naturally have to fit together and make sense in the combination in question.

The mathematical functions sin, cos, tan and sqrt can also be used. Example: sin(π/2), cos(pi/2), tan(90°), sin(90) or sqrt(4).

If a check mark has been placed next to 'Numbers in scientific notation', the answer will appear as an exponential. For example, 9.851 722 132 571 5×1021. For this form of presentation, the number will be segmented into an exponent, here 21, and the actual number, here 9.851 722 132 571 5. For devices on which the possibilities for displaying numbers are limited, such as for example, pocket calculators, one also finds the way of writing numbers as 9.851 722 132 571 5E+21. In particular, this makes very large and very small numbers easier to read. If a check mark has not been placed at this spot, then the result is given in the customary way of writing numbers. For the above example, it would then look like this: 9 851 722 132 571 500 000 000. Independent of the presentation of the results, the maximum precision of this calculator is 14 places. That should be precise enough for most applications.

- Convert km² to nm² (Square kilometer to Square nanometer)
- Convert km² to µm² (Square kilometer to Square micrometer)
- Convert km² to mm² (Square kilometer to Square millimeter)
- Convert km² to cm² (Square kilometer to Square centimeter)
- Convert km² to dm² (Square kilometer to Square decimeter)
- Convert km² to m² (Square kilometer to Square meter)
- Convert km² to dam² (Square kilometer to Square decameter)
- Convert km² to hm² (Square kilometer to Square hectometer)
- Convert km² to in² (Square kilometer to Square inch)
- Convert km² to ft² (Square kilometer to Square foot)
- Convert km² to sqft (Square kilometer to Square foot (US))
- Convert km² to yd² (Square kilometer to Square yard)
- Convert km² to mi² (Square kilometer to Square mile)
- Convert km² to sqmi (Square kilometer to Square mile (US))
- Convert km² to ca (Square kilometer to Centiare)
- Convert km² to da (Square kilometer to Deciare)
- Convert km² to a (Square kilometer to Are)
- Convert km² to Rai (Square kilometer to Rai)
- Convert km² to ha (Square kilometer to Hectare)
- Convert km² to Metric morgen (Square kilometer to Metric morgen)
- Convert km² to South african morgen (Square kilometer to South african morgen)
- Convert km² to Rood (Square kilometer to Rood)
- Convert km² to Acre (international) (Square kilometer to Acre (international))
- Convert km² to ac (Square kilometer to Acre (US))
- Convert km² to circin (Square kilometer to Circular inch)
- Convert km² to Circular mil (Square kilometer to Circular mil)
- Convert km² to Circular thou (Square kilometer to Circular thou)
- Convert km² to Square mil (US) (Square kilometer to Square mil (US))
- Convert km² to Square thou (UK) (Square kilometer to Square thou (UK))
- Convert km² to ab (Square kilometer to Attobarn)
- Convert km² to fb (Square kilometer to Femtobarn)
- Convert km² to pb (Square kilometer to Picobarn)
- Convert km² to nb (Square kilometer to Nanobarn)
- Convert km² to µb (Square kilometer to Microbarn)
- Convert km² to mb (Square kilometer to Millibarn)
- Convert km² to b (Square kilometer to Barn)
- Convert km² to Kilobarn (Square kilometer to Kilobarn)
- Convert km² to Megabarn (Square kilometer to Megabarn)
- Convert km² to Shed (Square kilometer to Shed)
- Convert km² to Outhouse (Square kilometer to Outhouse)
- Convert km² to Skilodge (Square kilometer to Skilodge)
- Convert km² to TIE (Square kilometer to Two Inch Equivalent)
- Convert km² to Dunam (metric) (Square kilometer to Dunam (metric))
- Convert km² to Planck area (Square kilometer to Planck area)
- Convert km² to Football pitch (Square kilometer to Football pitch)