Available with 3D Analyst license.
Summary
Converts each cell value of a raster into a floating-point representation.
Illustration

Usage
- The input values can be positive or negative. 
- If you execute Float on an input that is already floating point, the output values will remain the same as the input values. 
Syntax
Float_3d (in_raster_or_constant, out_raster)
| Parameter | Explanation | Data Type | 
| in_raster_or_constant | The input raster to be converted to floating point. In order to use a number as an input for this parameter, the cell size and extent must first be set in the environment. | Raster Layer | Constant | 
| out_raster | The output raster. The cell values are the floating-point representation of the input values. | Raster Dataset | 
Code Sample
Float example 1 (Python window)
This example converts the input raster values to floating point.
import arcpy
from arcpy import env
env.workspace = "C:/data"
arcpy.Float_3d("elevation", "C:/output/outfloat2")
Float example 2 (stand-alone script)
This example converts the input raster values to floating point.
# Name: Float_3d_Ex_02.py
# Description: Converts each cell value of a raster into a floating-point 
#    representation
# Requirements: 3D Analyst Extension
# Import system modules
import arcpy
from arcpy import env
# Set environment settings
env.workspace = "C:/data"
# Set local variables
inRaster = "landuse"
# Check out the ArcGIS 3D Analyst extension license
arcpy.CheckOutExtension("3D")
# Execute Float
arcpy.Float_3d(inRaster, "C:/output/outfloat")
Environments
Licensing Information
- ArcGIS for Desktop Basic: Requires 3D Analyst or Spatial Analyst
- ArcGIS for Desktop Standard: Requires 3D Analyst or Spatial Analyst
- ArcGIS for Desktop Advanced: Requires 3D Analyst or Spatial Analyst