Enter an illuminance value in one of these formats:
Integer:2314Decimal:2.71828+986.314Scientific Notation:2.7E+20.3528e03Formula:300/50(2.7*5e2)/( 1 + (6.5/1.8e-2) )Fraction:2+3/89 + ( 17 / 32 )Calculator Memory:
You can use the results from previous conversions or calculations, which you may have saved
in the Calculator Memory.
First click inside the illuminance input field to select it, then click the Recall button on one of the Memories.
The memory contents is loaded to the input field.
See the Calculator Memory for more details.
Maximum Input Length: 200 characters
From and To Illuminance Units
From Menu
In this menu, choose the illuminance units of your input value, for example one of these.
luxfootcandleslumens per square inchlumens per square footlumens per square meterlumens per square centimeterTo Menu
In this menu, choose the illuminance units you want to convert to, for example one of these.
lumens per square centimeterlumens per square meterlumens per square footlumens per square inchfootcandlesluxTIP:
Drag your mouse pointer in the To or From menu to change units. Release the mouse button to perform a new conversion.
TIP:
Select units in the To or From menu. Press the Up and Down arrow keys on the keyboard to change units and do a new conversion.
The Result – Two Items
The first item is the illuminance value you entered in the input field,
shown here again as a number, with the illuminance units that are selected in the From menu.
The second item is the conversion result, with the illuminance units that are selected in the To menu.
Calculator Memory
You can save the result of your conversion in the Calculator Memory,
then use your saved results later as input for other converters and calculators
anywhere on the website.
See the Calculator Memory for more details.
TIP:Precision of the converter is 12 significant digits, from left to right. Digits after the 12 left-most digits, are not significant.
Numeric Range of the converter is:
+1.797e+308 to -1.797e+308+1.000e-311 to -1.000e-311TIP:Error messages, if any, are displayed here.
The Control Buttons
The illuminance converter has three control buttons.
Decimal and Scientific buttons let you choose the output format, as one of these two:
Decimal:-9999.1Scientific Notation:-9.9991e3Decimal Button
In this mode the converter will output in Decimal format whenever possible.
However, the converter will automatically output in Scientific Notation
when the results cannot be shown properly in Decimal format.
Scientific Button
In this mode the converter will always output in Scientific Notation.
Convert Button
Convert the illuminance value that you entered above, by using any of these methods:
Click the Convert button
Select a different unit in the From menu
Select a different unit in the To menu
Click the Decimal or the Scientific button
Press Enter or Return on keyboard
TIP:Scientific Notation is better for visualizing and working with big and small numbers, compared to decimal format.