Put each ₦100 amount in its economic era
The naira began during the 1970s oil-boom period. The 1980s brought foreign-exchange pressure and the 1986 Structural Adjustment Programme, while the early and mid-1990s saw very high inflation. Larger notes followed as everyday prices rose.
A ₦100 comparison should therefore name the year rather than treating “old naira” as one period. Useful checkpoints include 1973, 1990, the introduction of the ₦100 note in 1999, and later high-inflation years.
| Checkpoint | Why it matters | Example input |
|---|---|---|
| 1973 | First year of the naira | ₦100 |
| 1990 | Adjustment-era prices | ₦100 |
| 1999 | ₦100 note and return to civilian government | ₦100 |
| 2005 | ₦1,000 note era | ₦1,000 |
Compare everyday prices, then individual items
The calculator gives a broad answer for everyday household spending. It does not claim that every item changed by the same amount.
Rice, garri, petrol, transport and rent can move at very different rates. Compare a particular item only when its unit, location and date are clear.
- Keep general spending and food prices separate
- Do not use the dollar rate as a replacement for Nigerian prices
- Check the date and location of any old price example
Your own household may feel a different increase
A family that spends more on food, transport, rent, power or school fees may feel a larger change than the general result.
Costs also vary between Lagos, other states, cities and rural areas. Use the main result as a starting point, not as an exact household budget.