The legal voting age is one of the most globally consistent age-based rules there is, with the overwhelming majority of countries settling on 18. But it’s not universal. A handful of countries allow voting from 16, and at least one sets the bar as high as 25, and the reasons behind these differences go back through decades of political and social change.
Key Takeaways
- Roughly 85% of the world’s countries and territories set the legal voting age at 18.
- A smaller group, including Austria and Brazil, allows voting from age 16, sometimes only in certain elections.
- The United Arab Emirates has the highest standard voting age in the world, at 25.
- The global shift toward 18 happened mostly between 1965 and 1975, replacing a previous common standard of 21.
- Voting age is not always the same as the general age of majority, since some countries set them independently of each other.
Why 18 Became the Global Standard
For most of the 20th century, the standard voting age in democratic countries was 21, inherited from the older common-law age of majority. That changed rapidly in a short window between the mid-1960s and mid-1970s.
The United Kingdom lowered its voting age from 21 to 18 in 1969. Canada followed in 1970. In the United States, the 26th Amendment lowered the voting age to 18 in 1971, driven largely by the argument that anyone old enough to be drafted for military service, particularly during the Vietnam War era, should also be old enough to vote.
This wave of change across major democracies established 18 as the de facto global standard, and most subsequent adoptions and independence-era constitutions elsewhere in the world followed suit.
Legal Voting Age by Country: A Comparison Table
| Voting Age | Countries (Examples) | Notes |
|---|---|---|
| 16 | Austria, Brazil, Nicaragua | Austria was the first EU country to lower its national voting age to 16, in 2007; Brazil and Nicaragua have allowed 16-year-olds to vote since the 1980s |
| 17 | Timor-Leste, Greece, Indonesia, North Korea, Sudan, South Sudan | Indonesia additionally allows married citizens to vote regardless of age |
| 18 | United States, United Kingdom, Canada, India, Germany, France, Japan, South Korea, most of the world | The near-universal global standard, adopted by roughly 85% of countries |
| 19 | Solomon Islands | One of the few countries between 18 and 20 |
| 20 | Taiwan and a small number of others | Less common than 18 or 21 |
| 21 | Kuwait, Singapore, Oman, Samoa, Bahrain | A holdover group that never moved to the 18 standard |
| 25 | United Arab Emirates | The single highest standard national voting age in the world |
Note: these figures reflect general national standards and can change; some countries also apply different ages for different types of elections (local vs national), so always confirm the current rule for the specific election and country in question before relying on any single number.
How to Determine If You Meet the Voting Age Requirement
| Step | What to Do | Why It Matters |
|---|---|---|
| 1 | Identify the legal voting age for your specific country (and election type, if it differs) | Voting age can vary by election level within the same country |
| 2 | Calculate your exact age as of election day, not today’s date | Some jurisdictions require you to have reached the age by election day specifically, not by registration day |
| 3 | Check your country’s voter registration deadlines and requirements separately | Meeting the age requirement doesn’t automatically mean you’re registered |
| 4 | Confirm any special rules (e.g. married-status exceptions, supervised early voting) that might apply in your country | A small number of countries have documented exceptions to the standard age rule |
Worked Examples
Example 1: Straightforward eligibility check
- Country: United States (voting age 18)
- Date of birth: 3 March 2008
- Election day: 3 November 2026
- On election day, this person is 18 years and 8 months old.
- Result: eligible to vote, having already passed the age threshold well before election day.
Example 2: Borderline case, turning 18 just before an election
- Country: United States (voting age 18)
- Date of birth: 30 October 2008
- Election day: 3 November 2026
- On election day, this person has just turned 18, four days earlier.
- Result: eligible to vote, since the requirement is being 18 by election day, and this person cleared that bar just in time, even though they weren’t 18 a week earlier.
Example 3: A country with a lower voting age and an exception rule
- Country: Indonesia (standard voting age 17)
- Date of birth: a hypothetical 16-year-old who is legally married
- Under Indonesia’s specific rule, married citizens may vote regardless of age.
- Result: eligible to vote, despite being younger than the standard 17-year threshold, because of the country’s specific married-status exception, illustrating why “voting age” isn’t always a single flat number even within one country.
Voting Age vs Age of Majority
It’s a common assumption that voting age and the general age of majority (the age at which someone is legally considered an adult) are always the same number. In many countries they do line up, but they’re set independently, and there’s no rule requiring them to match.
| Concept | What It Determines | Typically Set By |
|---|---|---|
| Voting age | Minimum age to legally cast a ballot in an election | Electoral law, sometimes constitutional amendment |
| Age of majority | General legal age of adulthood, affecting contracts, marriage without consent, and other rights | Civil law, often distinct from electoral law |
For a broader look at how the age of majority itself is defined and how it varies, see our guide on the legal age of adulthood by country.
Why Voting Age Still Varies So Much
Even with 18 as the dominant standard, the remaining variation reflects real, ongoing political debate rather than administrative inconsistency:
- Countries with 16 generally argue that civic engagement and political education benefit from earlier voting rights, and that 16-year-olds already carry other responsibilities (like employment or paying certain taxes) that justify representation.
- Countries with 20 or higher often tie voting age to broader cultural or legal conventions around adulthood, sometimes reflecting historical constitutional choices that simply haven’t been revisited.
- The United Arab Emirates’ age of 25 is a notable outlier reflecting its own distinct political and electoral structure, which differs substantially from parliamentary democracies elsewhere.
A Brief History of the Voting Age Debate
The modern push toward 18 didn’t happen in isolation. It followed decades of civic pressure, most visibly in wartime contexts. The phrase “old enough to fight, old enough to vote” became a rallying point in the United States during both World War II and later the Vietnam War era, since young men were being conscripted at 18 while having no say in the elected governments sending them to serve.
That argument eventually won out, but it took until 1971 for the US to formally ratify the 26th Amendment. Other countries reached similar conclusions through their own domestic debates, sometimes influenced by these international examples and sometimes driven by entirely separate local political movements.
More recently, the debate has shifted rather than disappeared. Advocacy for lowering the voting age to 16 has grown in several countries, citing the argument that 16 and 17 year olds already pay taxes in many jurisdictions, are considered old enough to work, and would benefit from developing civic engagement habits earlier. Austria’s 2007 move remains the most prominent example of this argument succeeding at a national level within the EU, while several other countries have since experimented with lowering the age for local or regional elections specifically, without extending it to national votes.
Youngest and Oldest Voting Age Countries at a Glance
| Category | Countries | Age |
|---|---|---|
| Youngest standard voting age | Austria, Brazil, Nicaragua | 16 |
| Most common standard | The vast majority of the world’s countries | 18 |
| Oldest standard voting age | United Arab Emirates | 25 |
It’s worth noting that “youngest” and “oldest” here refer to standard national voting ages. Individual exceptions, like Indonesia’s married-status rule discussed above, can create effective ages below even the 16-year floor in specific, limited circumstances.
Common Mistakes
| Mistake | Why It’s Wrong | The Fix |
|---|---|---|
| Assuming voting age is 18 everywhere | Roughly 15% of countries use a different age, ranging from 16 to 25 | Check the specific country’s current legal voting age before assuming |
| Confusing voting age with the general age of majority | The two are set independently and don’t always match in the same country | Verify each separately for the country in question |
| Calculating age as of registration day instead of election day | Some rules specifically require the age to be reached by election day | Confirm which date the age requirement is measured against |
| Overlooking country-specific exceptions | Some countries have documented exceptions, like Indonesia’s married-status rule | Research any specific exceptions rather than assuming a flat age rule applies universally |
| Assuming the voting age has never changed | Voting age has shifted substantially over the past century, especially between 1965 and 1975 | Check the current legal age rather than relying on historical assumptions |
Frequently Asked Questions
What is the legal voting age in most countries? Eighteen. Roughly 85% of the world’s countries and territories use 18 as the legal voting age, making it the dominant global standard.
Which countries have the lowest voting age? Austria, Brazil, and Nicaragua allow voting from age 16, among the lowest standard voting ages in the world. Several other countries, including Greece and Indonesia, set the age at 17.
Which country has the highest legal voting age? The United Arab Emirates, at 25, has the highest standard national voting age currently in place.
Why did the voting age change from 21 to 18 in so many countries? Most major democracies lowered their voting age between 1965 and 1975, driven substantially by the argument, especially prominent in the United States and United Kingdom, that people old enough for military service or other adult responsibilities should also have the right to vote.
Is the voting age the same as the age of majority? Not necessarily. They’re set independently in most legal systems, and while many countries align them at 18, some do not.
Can voting age differ for different types of elections within the same country? Yes, in some cases. Certain countries set different minimum ages for local elections versus national elections, so it’s worth confirming the specific rule for the election in question.
How do I check my exact age as of a specific election day? You can confirm your exact current age instantly, and check it against any future election date to see whether you’ll meet the requirement in time.
Are there exceptions to standard voting age rules in any country? Yes. Indonesia, for example, allows married citizens to vote regardless of age, even below its standard threshold of 17, showing that voting age rules aren’t always a single flat number even within one country.
Confirm Your Exact Age Before Election Day
Since eligibility in many places depends on your exact age as of election day rather than today, it’s worth double-checking well in advance, especially if your birthday falls close to a voting date. You can confirm your exact current age in seconds and compare it against any election date.
Voting age is just one of several age-based legal milestones worth knowing. For another age-based legal milestone, see our comparison of legal driving age by country, which follows a similarly varied pattern around the world.