Measurement standards in floor flatness have only been developed to any degree of sophistication in the US, UK and Germany. There is considerable commonality between the US and UK standards which are to be found in use throughout the world. The German standard is unlikely to be encountered outside of Germany and some other parts of Europe.
The decision on which specification to choose is usually dependant on the country of origin and there are three main floor flatness specifications used internationally.
| FLOOR FLATNESS SPECIFICATIONS |
| GEOGRAPHICAL REGIONS | FREE MOVEMENT FLOORS | DEFINED TRAFFIC FLOORS |
| UK and areas of UK influence | Concrete Society's TR34 Free Movement Specification | The Concrete Society's Technical Report 34 (TR34). Table 4.3 and Appendix C |
| USA and areas of USA influence | ASTM F-number system | The ACI F min number system |
| Germany and some other European countries | DIN 18202 | DIN 15185 |