Congo River
The Congo River is a major waterway in Central Africa, flowing through dense rainforest and forming an extensive drainage basin.
Also known as: Zaire River, Congo
How big is it?
4,700 km · approximate river-system length
Also 2,920 mi
Approximate river-system length · approximate
Typical recorded range: 4,600 km to 4,800 km.
A little perspective
Congo River vs Callisto: length comparison
The mean diameter of Callisto is about 1.03 times the river-system length of the Congo River.
The Congo River is a major waterway in Central Africa, flowing through dense rainforest and forming an extensive drainage basin.
Callisto is a natural satellite of Jupiter, with a heavily cratered icy surface.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Congo River
Approximate river-system length: 4,700 km; approximate; range 4,600 km–4,800 km.
The Congo river system is approximately 4,700 km long when the Chambeshi is treated as its remotest source. Choosing the Lualaba by discharge or another centreline convention changes the total.
Encyclopaedia Britannica — Congo River
The marked approximate river-system length is calibrated. Unmeasured illustration details are representative.
Callisto
Mean diameter: 4,821 km; approximate.
Rounded mean-radius model of Callisto. The derived area and volume describe a sphere; surface terrain and flattening are omitted.
NASA JPL — Planetary satellite physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 4,700 km
We compare the river-system length of the Congo River. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 4,600 km to 4,800 km.
The Congo river system is approximately 4,700 km long when the Chambeshi is treated as its remotest source. Choosing the Lualaba by discharge or another centreline convention changes the total.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 4,700 km | 4,600 km to 4,800 km | approximate |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valuePlaces and natural featuresLena4,400 kmApproximate main-channel lengthThe Lena is a major river in eastern Siberia, Russia, flowing from the Baikal Mountains to the Laptev Sea.Around the same scalePlaces and natural featuresNile6,650 kmApproximate river-system lengthThe Nile is a prominent river in northeastern Africa, flowing northward through several countries before reaching the Mediterranean Sea.Nearest higher valuePlaces and natural featuresYellow River5,464 kmApproximate main-channel lengthThe Yellow River, or Huang He, is a major river in northern China, flowing from the Bayan Har Mountains to the Bohai Sea.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- Encyclopaedia Britannica — Congo RiverApproximately 4,700 km using the Chambeshi as the remotest source.
There’s always another scale
Follow your curiosity.
PlacesNile6,650 kmThe Nile is a prominent river in northeastern Africa, flowing northward through several countries before reaching the Mediterranean Sea.PlacesYellow River5,464 kmThe Yellow River, or Huang He, is a major river in northern China, flowing from the Bayan Har Mountains to the Bohai Sea.
SpaceCallisto4,821 kmCallisto is a natural satellite of Jupiter, with a heavily cratered icy surface.
SpaceMercury4,879 kmMercury is a rocky planet orbiting closest to the Sun in the Solar System.
SpaceTitan5,150 kmTitan is a natural satellite of Saturn, with a thick nitrogen-rich atmosphere and surface lakes of hydrocarbons.
SpaceGanymede5,262 kmGanymede is a natural satellite of Jupiter and contains a magnetic field generated by its partially liquid core.
SpaceIo3,643 kmIo is a natural satellite of Jupiter, covered with active volcanoes and sulphur deposits.PlacesLena4,400 kmThe Lena is a major river in eastern Siberia, Russia, flowing from the Baikal Mountains to the Laptev Sea.