Use this useful tool to convert magnetic flux density choosing one of the 11 units of measurment included in this app (with the availability to add custom units), that are:
tesla, weber/square meter, weber/square centimeter, weber/square inch, maxwell/square meter, maxwell/square centimeter, maxwell/square inch, line/square centimeter, line/square inch, gamma, gauss.
For every units of measurment are also included formulas to convert that unit as you want.