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The Powers in Engineering / Scientific Notation

This shows the names of the powers of ten in thousand increments (example in Hertz).

0.000,000,000,000,000,000,000,001 = 1 yHz (1 yocto Hertz) = 1 x 10-24 Hz
0.000,000,000,000,000,000,001 = 1 zHz (1 zepto Hertz) = 1 x 10-21 Hz
0.000,000,000,000,000,001 = 1 aHz (1 atto Hertz) = 1 x 10-18 Hz
0.000,000,000,000,001 = 1 fHz (1 femto Hertz) = 1 x 10-15 Hz
0.000,000,000,001 = 1 pHz (1 pico Hertz) = 1 x 10-12 Hz
0.000,000,001 = 1 nHz (1 nano Hertz) = 1 x 10-9 Hz
0.000,001 = 1 µHz (1 micro Hertz) = 1 x 10-6 Hz
0.001 = 1 mHz (1 milli Hertz) = 1 x 10-3 Hz
1 = 1 Hz (1 Hertz) = 1 x 100 Hz
1,000 = 1 kHz (1 kilo Hertz) = 1 x 103 Hz
1,000,000 = 1 MHz (1 Mega Hertz) = 1 x 106 Hz
1,000,000,000 = 1 GHz (1 Giga Hertz) = 1 x 109 Hz
1,000,000,000,000 = 1 THz (1 Tera Hertz) = 1 x 1012 Hz
1,000,000,000,000,000 = 1 PHz (1 Peta Hertz) = 1 x 1015 Hz
1,000,000,000,000,000,000 = 1 EHz (1 Exa Hertz) = 1 x 1018 Hz
1,000,000,000,000,000,000,000 = 1 ZHz (1 Zetta Hertz) = 1 x 1021 Hz
1,000,000,000,000,000,000,000,000 = 1 YHz (1 Yotta Hertz) = 1 x 1024 Hz

Note: for values smaller than 1 lowercase is used, for values greater than 1 uppercase. The exception is k for kilo, 1,000 (103). K for Kilo is reserved for the value 1,024 (210), see example below.

20 = 1 (bit) | 28 = 256 (byte)
21 = 2   | 29 = 512  
22 = 4   | 210 = 1'024 (1 KB)
23 = 8   | 211 = 2'048 (2 KB)
24 = 16 (nibble) | 212 = 4'096 (4 KB)
25 = 32   | 213 = 8'192 (8 KB)
26 = 64   | 214 = 16'384 (16 KB)
27 = 128   | 215 = 32'768 (32 KB)
 
  © 2004 - 2017 by Horo Wernli.