| Country | PHITS users |
|---|
| Algeria | 14 |
| Argentina | 150 |
| Armenia | 1 |
| Australia | 26 |
| Austria | 23 |
| Bangladesh | 45 |
| Belarus | 1 |
| Belgium | 75 |
| Bolivia | 6 |
| Botswana | 4 |
| Brazil | 60 |
| Cameroon | 51 |
| Canada | 35 |
| China | 216 |
| Colombia | 3 |
| Costa Rica | 2 |
| Croatia | 5 |
| Cuba | 5 |
| Czechia | 35 |
| Denmark | 5 |
| Dominica | 1 |
| Ecuador | 2 |
| Egypt | 19 |
| Ethiopia | 1 |
| Finland | 5 |
| France | 329 |
| Germany | 133 |
| Ghana | 4 |
| Greece | 4 |
| Hong Kong | 3 |
| Hungary | 2 |
| India | 62 |
| Indonesia | 778 |
| Italy | 106 |
| Japan | 4232 |
| Jordan | 7 |
| Kazakhstan | 10 |
| Kenya | 3 |
| South Korea | 452 |
| Kuwait | 7 |
| Latvia | 1 |
| Macau | 1 |
| Malaysia | 163 |
| Mexico | 17 |
| Mongolia | 13 |
| Morocco | 161 |
| Myanmar | 91 |
| Nepal | 26 |
| Netherlands | 7 |
| Nigeria | 18 |
| Norway | 8 |
| Pakistan | 2 |
| Paraguay | 1 |
| Peru | 3 |
| Philippines | 308 |
| Poland | 42 |
| Portugal | 5 |
| Romania | 8 |
| Russia | 18 |
| Saudi Arabia | 60 |
| Serbia | 5 |
| Singapore | 7 |
| Slovenia | 2 |
| South Africa | 8 |
| Spain | 221 |
| Sweden | 67 |
| Switzerland | 39 |
| Taiwan | 63 |
| Tanzania | 5 |
| Thailand | 121 |
| Tunisia | 1 |
| Türkiye | 77 |
| Uganda | 1 |
| Ukraine | 11 |
| United Arab Emirates | 6 |
| United Kingdom | 69 |
| United States | 581 |
| Vietnam | 121 |
| Yemen | 1 |
| Zambia | 1 |
| Total | 9282 |