How many years of comparable data are there for Tonga and Ukraine?

32 years are reported by both, from 1992 to 2023.

Where does this data come from?

Statizoid (derived), published as Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Tonga vs Ukraine: Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per

Tonga

0 Mt CO2e per square kilometre

in 2023

Ukraine

0 Mt CO2e per square kilometre

in 2023

Tonga rank

71st

Ukraine rank

72nd

Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per over time

Tonga
Ukraine

How they compare

Tonga currently reports 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Ukraine, a difference of 0 Mt CO2e per square kilometre.

The two have swapped places 1 time across 32 shared years of data; in 1992 it was Ukraine ahead.

Tonga ranks 71st and Ukraine ranks 72nd of 193 countries.

Ukraine has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Tonga	Ukraine	Difference	Ahead
1990s	0 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	Ukraine
2000s	0 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	Ukraine
2010s	0 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ukraine
2020s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ukraine

Averages of every year both report within each decade.

Frequently asked questions

Which has higher carbon dioxide (co2) emissions from building (energy) (mt co2e), per, Tonga or Ukraine?: Tonga, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Ukraine as of 2023.
What is the difference in carbon dioxide (co2) emissions from building (energy) (mt co2e), per between Tonga and Ukraine?: 0 Mt CO2e per square kilometre, with Tonga ahead.
How many years of comparable data are there for Tonga and Ukraine?: 32 years are reported by both, from 1992 to 2023.
How do Tonga and Ukraine rank globally for carbon dioxide (co2) emissions from building (energy) (mt co2e), per?: Tonga ranks 71st and Ukraine ranks 72nd of 193 countries.
Where does this data come from?: Statizoid (derived), published as Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Tonga vs Ukraine: Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/carbon-dioxide-co2-emissions-from-building-energy-mt-co2e-per-square-kilometre/tonga/ukraine/

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<a href="https://environment.statizoid.com/compare/carbon-dioxide-co2-emissions-from-building-energy-mt-co2e-per-square-kilometre/tonga/ukraine/">Tonga vs Ukraine: Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per</a> — Statizoid

About this data

Indicator: Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e), per square kilometre
Unit: Mt CO2e per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 240 places, 12,327 data points, 1970–2023
Last refreshed: 21 September 2026

Carbon dioxide (CO2) emissions from Building (Energy) (Mt CO2e) divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.