🏆 Standard Complexity Rankings

Not all standards are equal. Complexity scores help you quickly gauge how difficult a standard will be to understand and implement.

💡 How Complexity Scores Are Calculated

Four factors combine to produce a 0–10 complexity score. Higher means more demanding.

📖
Reference Count
How many other standards this one references
🗺
ICS Breadth
Number of distinct classification categories
📝
Scope Length
Word count of the scope description
🔨
Type Weight
Specification, guide, or terminology — weighted by complexity
RankStandardScoreLevel
1
GB/T 6678-2003 704 refs · Score 0.1 Compare with ASME Y14.36M-1996 →
0.1
Easy
2
ASME Y14.36M-1996 701 refs · Score 0.1 Compare with GB/T 6678-2003 →
0.1
Easy
3
EN ISO 13857:2008 700 refs · Score 0.1 Compare with ISO/IEC 17025:2005 →
0.1
Easy
4
ISO/IEC 17025:2005 698 refs · Score 0.1 Compare with EN ISO 13857:2008 →
0.1
Easy
5
ISO 80000-1:2009 685 refs · Score 0.1 Compare with GB/T 5226.1-2019 →
0.1
Easy
6
GB/T 5226.1-2019 652 refs · Score 0.1 Compare with ISO 80000-1:2009 →
0.1
Easy
7
GOST 8.579-2002 651 refs · Score 0.1 Compare with GB/T 22239-2019 →
0.1
Easy
8
GB/T 22239-2019 629 refs · Score 0.1 Compare with GOST 8.579-2002 →
0.1
Easy
9
EN 953:1997 624 refs · Score 0.1 Compare with GOST R 53228-2008 →
0.1
Easy
10
GOST R 53228-2008 618 refs · Score 0.1 Compare with EN 953:1997 →
0.1
Easy
11
ISO 2859-1:1999 615 refs · Score 0.1 Compare with EN 294:1992 →
0.1
Easy
12
EN 294:1992 615 refs · Score 0.1 Compare with ISO 2859-1:1999 →
0.1
Easy
13
EN 1050:1996 607 refs · Score 0.1 Compare with GB/T 8427-2008 →
0.1
Easy
14
GB/T 8427-2008 606 refs · Score 0.1 Compare with EN 1050:1996 →
0.1
Easy
15
GOST 61-1975 602 refs · Score 0.1 Compare with ISO 9000:2005 →
0.1
Easy
16
ISO 9000:2005 602 refs · Score 0.1 Compare with GOST 61-1975 →
0.1
Easy
17
GB/T 2423.4-2008 594 refs · Score 0.1 Compare with GOST 18300-1987 →
0.1
Easy
18
GOST 18300-1987 588 refs · Score 0.1 Compare with GB/T 2423.4-2008 →
0.1
Easy
19
EN ISO 13849-1:2008 578 refs · Score 0.1 Compare with GB/T 17421.1-1998 →
0.1
Easy
20
GB/T 17421.1-1998 574 refs · Score 0.1 Compare with EN ISO 13849-1:2008 →
0.1
Easy
21
GOST 12026-1976 571 refs · Score 0.1 Compare with GB/T 700-2006 →
0.1
Easy
22
GB/T 700-2006 565 refs · Score 0.1 Compare with GOST 12026-1976 →
0.1
Easy
23
GB/T 191-2000 560 refs · Score 0.1 Compare with GOST 12.2.007.0-1975 →
0.1
Easy
24
GOST 12.2.007.0-1975 554 refs · Score 0.1 Compare with GB/T 191-2000 →
0.1
Easy
25
ASME B46.1-2009 552 refs · Score 0.1 Compare with GOST 12.2.007.0-1975 →
0.1
Easy