Land
Size, shape and altitude
How big is it, really?
Iran is 85% bigger than Tanzania
Iran: 1,745,150 km² (2024) · Tanzania: 945,500 km² (2024)
How much coast is there?
Iran’s coastline is 71% longer than Tanzania’s
Iran: 2,440 km (2026 edition) · Tanzania: 1,424 km (2026 edition)
How high can you climb?
Tanzania’s highest peak towers 270 m above Iran’s
Iran: 5,625 m (2026 edition) · Tanzania: 5,895 m (2026 edition)
How much of the land is farmed?
Farmland covers 45% of Tanzania, versus 29% of Iran
Iran: 29% (2024) · Tanzania: 45.1% (2024)
People
Who lives there, and how closely
How many people live there?
Iran has 31% more people than Tanzania
Iran: 92.4 million (2025) · Tanzania: 70.5 million (2025)
How crowded is it?
Tanzania is 40% more densely populated than Iran
Iran: 57 per km² (2025) · Tanzania: 80 per km² (2025)
How tall are the men?
Men in Iran are 8.6 cm taller than in Tanzania
Iran: 175.6 cm (2019) · Tanzania: 167 cm (2019)
How tall are the women?
Women in Iran are 4.3 cm taller than in Tanzania
Iran: 161.2 cm (2019) · Tanzania: 156.9 cm (2019)
How old is the typical person?
The typical person in Iran is 16 years older than in Tanzania
Iran: 32.9 years (2023) · Tanzania: 17.2 years (2023)
How many children per woman?
Women in Tanzania have 2.9 more children on average than in Iran
Iran: 1.68 children per woman (2024) · Tanzania: 4.54 children per woman (2024)
How many people are 65 or older?
8.6% of people in Iran are 65 or older, versus 3.0% in Tanzania
Iran: 8.6% (2025) · Tanzania: 3% (2025)
How many refugees does it host?
Iran hosts 3.4 times as many refugees per resident as Tanzania
Iran: 8.3 per 1,000 (2025) · Tanzania: 2.4 per 1,000 (2025)
How many Nobel laureates were born there?
Iran has produced 0.3 Nobel laureates per 10 million people, Tanzania none
Iran: 0.3 (2026) · Tanzania: 0 (2026)
How many official languages?
Tanzania has 2 official languages, Iran 1
Iran: 1 (2026) · Tanzania: 2 (2026)
Money
What an economy looks like per person
How big is the economy?
Iran’s economy is 4 times the size of Tanzania’s
Iran: $363 billion (2025) · Tanzania: $90.1 billion (2025)
How much is produced per person?
Iran produces 4.4 times as much per person as Tanzania
Iran: Int$19,699 (2025) · Tanzania: Int$4,471 (2025)
How evenly is income shared?
Income is more unequally shared in Tanzania than in Iran (Gini 4.6 points higher)
Iran: 35.9 (2023) · Tanzania: 40.5 (2018)
How many live on less than $3 a day?
51% of people in Tanzania live on less than $3 a day, versus 2.5% in Iran
Iran: 2.5% (2023) · Tanzania: 51.3% (2018)
How many people are looking for work?
Unemployment is 8.3% in Iran, versus 1.6% in Tanzania
Iran: 8.3% (2025) · Tanzania: 1.6% (2025)
How much goes to the military?
Iran spends 2.1% of its GDP on the military, Tanzania 1.2%
Iran: 2.1% (2025) · Tanzania: 1.2% (2025)
How much does the central government collect in tax?
Iran: no data · Tanzania: 12.3% (2024)
How expensive is it?
Tanzania’s price level (US = 100) is 1.5× Iran’s
Iran: 20% (2025) · Tanzania: 29% (2025)
Health
Long lives, small beginnings
How much is spent on health?
Iran spends 7.4 times as much on health per person as Tanzania
Iran: $267 (2023) · Tanzania: $36 (2023)
How long do people live?
People in Iran live 11 years longer than in Tanzania
Iran: 77.9 years (2024) · Tanzania: 67.2 years (2024)
How many babies don’t reach their first birthday?
A baby in Tanzania is 2.8 times as likely to die before turning one as in Iran
Iran: 10.3 per 1,000 (2024) · Tanzania: 28.7 per 1,000 (2024)
How many doctors are there?
Iran has 14 times as many doctors per person as Tanzania
Iran: 1.8 per 1,000 (2023) · Tanzania: 0.1 per 1,000 (2022)
How many hospital beds are there?
Iran has 2.2 times as many hospital beds per person as Tanzania
Iran: 1.9 per 1,000 (2019) · Tanzania: 0.8 per 1,000 (2022)
How common is suicide?
The suicide rate in Tanzania is 2.5 times that in Iran
Iran: 6 per 100k (2023) · Tanzania: 14.9 per 100k (2023)
How common is obesity?
26% of adults in Iran are obese, versus 10% in Tanzania
Iran: 25.7% (2024) · Tanzania: 10.5% (2024)
How many adults smoke?
12% of adults in Iran smoke, versus 7.7% in Tanzania
Iran: 11.9% (2024) · Tanzania: 7.7% (2024)
Everyday life
Plates, glasses and happiness
How do people rate their lives?
People in Iran rate their lives 1.25 points higher than in Tanzania
Iran: 5.15 (2025) · Tanzania: 3.90 (2025)
How much do people drink?
Adults in Tanzania drink 72 times as much alcohol as in Iran
Iran: 0.021 litres (2023) · Tanzania: 1.5 litres (2023)
How much meat is on the menu?
Iran has 2.5 times as much meat per person as Tanzania
Iran: 29.9 kg (2023) · Tanzania: 12.2 kg (2023)
How much food is there per day?
Iran has 357 kcal more food per person per day than Tanzania
Iran: 2,875 kcal (2023) · Tanzania: 2,518 kcal (2023)
How long do people work?
Workers in Iran put in 117 more hours a year than in Tanzania
Iran: 2,246 hours (2023) · Tanzania: 2,129 hours (2023)
How long do people go to school?
Adults in Iran went to school 4.8 years longer than in Tanzania
Iran: 10.8 years (2023) · Tanzania: 6.1 years (2023)
How many tourists visit?
Iran: no data · Tanzania: 0.02 (2022)
How many World Heritage sites?
Iran has 23 more World Heritage sites than Tanzania (30 against 7)
Iran: 30 (2026) · Tanzania: 7 (2026)
How many Olympic medals has it won?
Iran has won 88 Olympic medals, Tanzania 2
Iran: 88 (2026 edition) · Tanzania: 2 (2026 edition)
Connected
Online, electrified, urban
How many people are online?
85% of people in Iran are online, versus 31% in Tanzania
Iran: 85% (2024) · Tanzania: 31% (2024)
How fast is home internet?
Iran: no data · Tanzania: 56 Mbps (2026)
Who has electricity at home?
100% of people in Iran have electricity, versus 52% in Tanzania
Iran: 100% (2024) · Tanzania: 52.4% (2024)
How many live in cities?
77% of people in Iran live in cities, versus 37% in Tanzania
Iran: 77% (2025) · Tanzania: 37% (2025)
How many phones per person?
Iran has 174 mobile subscriptions per 100 people, Tanzania 127
Iran: 174 (2024) · Tanzania: 127 (2024)
How much railway is there?
Iran’s railway network is 3.5 times as long as Tanzania’s
Iran: 9,455 km (2021) · Tanzania: 2,701 km (2017)
How much do they fly?
Airlines from Iran fly 7.2 times as many passengers per resident as those from Tanzania
Iran: 0.2 (2023) · Tanzania: 0.03 (2023)
Planet
Air, forests and energy
How much of the land is forest?
Forest covers 50% of Tanzania, but only 6.6% of Iran
Iran: 6.6% (2024) · Tanzania: 49.6% (2024)
How much CO₂ does each person emit?
The average person in Iran emits 30 times as much CO₂ as someone in Tanzania
Iran: 8.7 t (2024) · Tanzania: 0.3 t (2024)
How green is the power grid?
33% of Tanzania’s electricity is renewable, versus 3.8% in Iran
Iran: 3.8% (2025) · Tanzania: 32.9% (2024)
How clean is the air?
The air in Iran carries 53% more fine dust than in Tanzania
Iran: 37.7 µg/m³ (2024) · Tanzania: 24.6 µg/m³ (2024)
Safety
Measured risk, not vibes
How common is murder?
You are 58% more likely to be murdered in Tanzania than in Iran
Iran: 2.4 per 100k (2014) · Tanzania: 3.7 per 100k (2020)
How dangerous are the roads?
Roads in Iran are 44% deadlier than in Tanzania
Iran: 28.9 per 100k (2023) · Tanzania: 20.1 per 100k (2023)
Climate
What the year feels like
How warm is it?
Tanzania is on average 3.9 °C warmer than Iran
Iran: 19.3°C (2016–2025 avg) · Tanzania: 23.1°C (2016–2025 avg)
How much rain falls?
Tanzania gets 4.1 times as much rain as Iran
Iran: 272 mm (2016–2025 avg) · Tanzania: 1,102 mm (2016–2025 avg)
Between them
People, goods and passports that cross from one to the other
Quick answers
Is Iran bigger than Tanzania?
Iran is larger. Iran is 85% bigger than Tanzania.
Which has more people, Iran or Tanzania?
Iran has 31% more people than Tanzania (2025 estimates).
Where do people live longer, Iran or Tanzania?
People in Iran live 11 years longer than in Tanzania. Life expectancy at birth is 77.9 years in Iran and 67.2 in Tanzania.
Are people taller in Iran or Tanzania?
Men in Iran are 8.6 cm taller than in Tanzania (NCD-RisC, cohort born 2019).
