The figure below depicts country usage color-coded by quartile (see rankings) and those with no known users in light gray. If you have used this calculator but your country is not listed, please send me an email note with details. Your return email address will serve to verify the correction.
| Rank | Country |
|---|---|
| 1 | United States |
| 2 | United Kingdom |
| 3 | Canada |
| 4 | Australia |
| 5 | Netherlands |
| 6 | India |
| 7 | France |
| 8 | Italy |
| 9 | Denmark |
| 10 | Germany |
| 11 | Spain |
| 12 | New Zealand |
| 13 | Sweden |
| 14 | Switzerland |
| 15 | Brazil |
| 16 | Ireland |
| 17 | Belgium |
| 18 | China |
| 19 | Philippines |
| 20 | Hong Kong |
| 21 | Singapore |
| 22 | South Korea |
| 23 | Japan |
| 24 | Malaysia |
| 25 | Norway |
| 26 | Finland |
| 27 | Poland |
| 28 | Taiwan |
| 29 | South Africa |
| 30 | Israel |
| 31 | Russia |
| 32 | Portugal |
| 33 | Turkey |
| 34 | Thailand |
| 35 | Mexico |
| 36 | Pakistan |
| 37 | Saudi Arabia |
| 38 | Argentina |
| 39 | Ukraine |
| 40 | Greece |
| 41 | Iran |
| 42 | Austria |
| 43 | Romania |
| 44 | Kenya |
| 45 | Czech Republic |
| 46 | Lithuania |
| 47 | Chile |
| 48 | Indonesia |
| 49 | Hungary |
| 50 | Egypt |
| 51 | Colombia |
| 52 | United Arab Emirates |
| 53 | Sri Lanka |
| 54 | Estonia |
| 55 | Iceland |
| 56 | Ethiopia |
| 57 | Slovenia |
| 58 | Puerto Rico |
| 59 | Peru |
| 60 | Vietnam |
| 61 | Croatia |
| 62 | Nigeria |
| 63 | Bangladesh |
| 64 | Slovakia |
| 65 | Latvia |
| 66 | Bulgaria |
| 67 | Trinidad and Tobago |
| 68 | Uganda |
| 69 | Serbia |
| 70 | Tanzania |
| 71 | Jordan |
| 72 | Jamaica |
| 73 | Lebanon |
| 74 | Kuwait |
| 75 | Luxembourg |
| Sudan | |
| 77 | Qatar |
| 78 | Ghana |
| 79 | Uruguay |
| 80 | Barbados |
| Cyprus | |
| Georgia | |
| Morocco | |
| 84 | Malta |
| Venezuela | |
| 86 | Ecuador |
| 87 | Oman |
| 88 | Yugosalvia |
| 89 | Bahrain |
| Nepal | |
| 91 | Guatemala |
| 92 | Namibia |
| 93 | Zimbabwe |
| 94 | Zambia |
| 95 | Belarus |
| 96 | Bosnia and Herzegovina |
| Botswana | |
| 98 | Mauritius |
| 99 | Cambodia |
| Palestine | |
| 101 | Rwanda |
| 102 | Mozambique |
| Tunisia | |
| United States Virgin Islands | |
| 105 | Iraq |
| Macau | |
| Malawi | |
| 108 | Algeria |
| Grenada | |
| Panama | |
| 111 | Gambia |
| 112 | Albania |
| 113 | Brunei |
| Costa Rica | |
| Guyana | |
| Syria | |
| 117 | Cuba |
| 118 | Bolivia |
| Guam | |
| 120 | Armenia |
| Belize | |
| Cayman Islands | |
| Libya | |
| 124 | Cameroon |
| Kazakhstan | |
| 126 | Moldova |
| 127 | Bahamas |
| Bermuda | |
| Burkina Faso | |
| Liechtenstein | |
| Macedonia | |
| Myanmar | |
| 133 | Dominica |
| El Salvador | |
| Fiji | |
| Mongolia | |
| Yemen | |
| 138 | Afghanistan |
| Dominican Republic | |
| Ivory Coast | |
| 141 | British Virgin Islands |
| Gibraltar | |
| Honduras | |
| Kyrgyzstan | |
| Saint Vincent and the Grenadines | |
| Senegal | |
| 147 | Aruba |
| Benin | |
| Djibouti | |
| French Polynesia | |
| Nicaragua | |
| Papua New Guinea | |
| Saint Lucia | |
| Seychelles | |
| Uzbekistan | |
| 156 | Andorra |
| Antigua and Barbuda | |
| Equatorial Guinea | |
| Haiti | |
| Laos | |
| Mali | |
| Netherlands Antilles | |
| 163 | Bhutan |
| Faroe Islands | |
| Lesotho | |
| Suriname | |
| 167 | Democratic Republic of the Congo |
| Gabon | |
| Greenland | |
| Isle of Man | |
| Madagascar | |
| Maldives | |
| Paraguay | |
| Turks and Caicos Islands | |
| 175 | Angola |
| Azerbaijan | |
| Guinea-Bissau | |
| Kiribati | |
| Micronesia | |
| Montenegro | |
| Saint Kitts and Nevis | |
| Samoa | |
| Swaziland | |
| 184 | Eritrea |
| French Guiana | |
| Guadeloupe | |
| Marshall Islands | |
| Niger | |
| Northern Mariana Islands | |
| Réunion | |
| Solomon Islands | |
| Somalia | |
| Tajikistan | |
| Vanuatu |
This page last updated on 4 May 2018.