SYNOPSIS use Math::ScientificNotation::Util qw(sci2dec); say sci2dec("1.2e-6"); # => 0.0000012 DESCRIPTION FUNCTIONS None exported by default, but they are exportable. sci2dec($sci) => $dec Convert scientific notation number to decimal number. Note that if you are sure that your number is not too large or small, you can just let Perl convert it for you: "1.2e-4"+0 # 0.00012 1*"1.2e8" # 120000000 but: "1.2e-5"+0 # => 1.2e-5 1*"1.2e20" # 1.2e+20 FAQ Where is dec2sci? To convert to scientific notation, you can use sprintf() with the %e, %E, %g, or %G format, for example: sprintf("%.2e", 1234) # => 1.23e+03