| Attribute |
Chad × | 
Nigeria × |
| Geography | | |
| Area (km²) | 1,284,000 | 923,768 |
| Continent | Africa | Africa |
| Land area (km²) | 1,259,200 | 910,768 |
| Water area (km²) | 24,800 | 13,000 |
| Land boundaries (km) | 6,406 | 4,477 |
| Border countries | - Cameroon
- Central African Republic
- Libya
- Niger
- Nigeria
- Sudan
| - Benin
- Cameroon
- Chad
- Niger
|
| Coastline (km) | 0 | 853 |
| Mean elevation (m) | 543 | 380 |
| Lowest point (m) | 160 | 0 |
| Highest point (m) | 3,445 | 2,419 |
| People | | |
| Population | 16,877,357 | 214,028,302 |
| Official languages | | |
| Religion | Muslim | Muslim |
| Government | | |
| Long country name | Republic of Chad | Federal Republic of Nigeria |
| Short country name | Chad | Nigeria |
| Long local name | Republique du Tchad/Jumhuriyat Tshad | - |
| Short local name | Tchad/Tshad | - |
| Government type | Presidential republic | Federal presidential republic |
| Capital | N'Djamena | Abuja |
| Economy | | |
| GDP (PPP) (USD) | 28,620,000,000 | 1,121,000,000,000 |
| 1↑GDP (OER) (USD) | 9,872,000,000 | 376,400,000,000 |
| GDP (real growth rate) (%) | -3.1 | 0.8 |
| GDP - per capita (PPP) (USD) | 2,300 | 5,900 |
| Gross national saving (% of GDP) | 15.5 | 18.2 |
| Labor force | 5,654,000 | 60,080,000 |
| Unemployment rate (%) | - | 16.5 |
| Population below poverty line (%) | 46.7 | 70 |
| Budget revenues (USD) | 1,337,000,000 | 12,920,000,000 |
| Budget expenditures (USD) | 1,481,000,000 | 19,540,000,000 |
| Military expenditures (% of GDP) | 2.13 | 0.51 |
| Taxes and other revenues (% of GDP) | 13.5 | 3.4 |
| Budget surplus or deficit (% of GDP) | -1.5 | -1.8 |
| Public debt (% of GDP) | 52.5 | 21.8 |
| Inflation rate (%) | -0.9 | 16.5 |
| Central bank discount rate (%) | 4.25 | 4.25 |
| Commercial bank prime lending rate (%) | 15.5 | 17.58 |
| Stock of narrow money (USD) | 1,397,000,000 | 36,130,000,000 |
| Stock of broad money (USD) | 1,397,000,000 | 36,130,000,000 |
| Stock of domestic credit (USD) | 2,681,000,000 | 84,660,000,000 |
| Market value of publicly traded shares (USD) | - | 53,070,000,000 |
| Current account balance (USD) | -558,000,000 | 10,380,000,000 |
| Exports (USD) | 2,464,000,000 | 1,146,000,000 |
| Imports (USD) | 2,160,000,000 | 32,670,000,000 |
| Reserves of foreign exchange and gold (USD) | 22,900,000 | 38,770,000,000 |
| External debt (USD) | 1,724,000,000 | 40,960,000,000 |
| National currency | Cooperation Financiere en Afrique Centrale francs | nairas |
| National currency (code) | XAF | NGN |
| National currency (symbol) | FCFA | ₦ |
| National currency rate to USD | 605.3 | 323.5 |