silly script to print out a matrix of font-sizes

font_size_matrix.rb

def font_size_matrix(default = 16)
  puts "px\t%\t\s\sem"
  (10..26).each do |n|
    val = (n * 100) / default.to_f
    puts "#{n}px\t%0.1f%%\t\s\s%0.3fem" % [val, val/100]
  end
end  

font_size_matrix

# output for 13 is:
# px	%	  em
# 10px	76.9%	  0.769em
# 11px	84.6%	  0.846em
# 12px	92.3%	  0.923em
# 13px	100.0%	  1.000em
# 14px	107.7%	  1.077em
# 15px	115.4%	  1.154em
# 16px	123.1%	  1.231em
# 17px	130.8%	  1.308em
# 18px	138.5%	  1.385em
# 19px	146.2%	  1.462em
# 20px	153.8%	  1.538em
# 21px	161.5%	  1.615em
# 22px	169.2%	  1.692em
# 23px	176.9%	  1.769em
# 24px	184.6%	  1.846em
# 25px	192.3%	  1.923em
# 26px	200.0%	  2.000em