The map above is centered on Singapore, Singapore, near Merlion Park (Marina Bay), with a default 10 km radius. Drag to move it, search for a different address, or change the radius and unit using the controls.
Singapore is a city-state — an island nation. The Johor Strait lies to the north, toward Malaysia; the Singapore Strait to the south, toward Indonesia. Distances here are straight-line from Merlion Park (Marina Bay) at 1.287° N, 103.855° E — the same way the radius map measures them.
Population figure: Singapore Department of Statistics, total population at end-June 2025.
Singapore is a compact island city-state. From the centre near Marina Bay, Tuas on the far western tip is only about 22 km away and Woodlands by the Causeway about 18 km northwest, so a single 25 km radius reaches every named district at once — Tanjong Pagar, Bedok, Tampines, Jurong East, Changi Airport, Woodlands and Tuas.
Also known as: SG, Lion City, Garden City, The Little Red Dot, Singapura, Sinkapor.
Coverage at common radii, including notable places that fall just outside the circle. Use these as a quick reference — check exact boundaries before relying on a circle for real-estate, retail, or service-area decisions.
Place locations: USGS GNIS and GeoNames (CC BY 4.0). Distances are straight-line (great-circle) from Merlion Park (Marina Bay), the same way the radius map measures them.
A 3 km radius from the Marina Bay centre covers the Central Business District, the inner waterfront, the Civic District, and Tanjong Pagar (~2 km southwest). Use it to focus tightly on the downtown area.
A 5 km radius reaches out from the downtown core, taking in the Central Business District and Tanjong Pagar (~2 km southwest) while Bedok (~9 km east) still falls outside.
A 10 km radius from the Marina Bay centre reaches east to Bedok (~9 km east) and takes in Tanjong Pagar (~2 km southwest), while Tampines, Jurong East, Changi Airport, Woodlands and Tuas fall just outside.
A 25 km radius from the Marina Bay centre reaches every named district — from Changi Airport (~17 km northeast) and Tampines (~12 km northeast) in the east to Jurong East (~14 km west) and Tuas (~22 km west) in the west, with Woodlands (~18 km northwest) at the Causeway — making it the smallest single radius that captures all of them.
A 50 km radius from the Marina Bay centre reaches well beyond the island; use it to extend across the Johor Strait toward southern Malaysia and across the Singapore Strait toward the Indonesian islands.
City-specific scenarios where a radius is the right tool — and a sensible radius to start with.
A 3 km radius from the Marina Bay centre keeps a search tight on the Central Business District and the dense central residential core, reaching Tanjong Pagar (~2 km southwest). A 5 km radius widens it into the surrounding inner districts.
Suggested starting radius: 3 km for the central core
To study the walkable catchment around a transit stop, draw a small radius — around 1 km — centred on the station itself. For a wider view, a 10 km radius from the Marina Bay centre reaches east to Bedok (~9 km east), and a 25 km radius reaches every named district out to Tuas (~22 km west).
Suggested starting radius: 1 km per station; 10 km for the central area
Changi Airport sits about 17 km northeast of the Marina Bay centre. A 20 km radius takes in the airport along with the eastern districts such as Bedok (~9 km east) and Tampines (~12 km northeast).
Suggested starting radius: 20 km to include Changi and the eastern districts
To capture every named district in one circle, a 25 km radius from the Marina Bay centre reaches the far western tip at Tuas (~22 km west), the Causeway at Woodlands (~18 km northwest), and Changi Airport (~17 km northeast) in the northeast.
Suggested starting radius: 25 km to cover the whole island
Local geography and infrastructure that change how a radius behaves here. Skipping these is the most common reason a radius decision goes sideways.
A 25 km radius from the Marina Bay centre reaches the farthest named districts — Tuas (~22 km west) on the western tip, Woodlands (~18 km northwest) at the Causeway, and Changi Airport (~17 km northeast) in the northeast. A single circle can take them all in at once.
The Singapore Strait lies to the south and the Johor Strait to the north, where the Causeway near Woodlands (~18 km northwest) and the Second Link near Tuas (~22 km west) carry the road crossings. A radius can span the strait on the map, but the actual border-crossing time is the real constraint.
Because the farthest named district — Tuas (~22 km west) — is about 22 km from the Marina Bay centre, a radius of roughly 25 km takes in every named district. That makes Singapore unusually easy for radius analysis: one centre point and one circle cover them all.
A 10 km radius from the Marina Bay centre reaches east to Bedok (~9 km east) and takes in Tanjong Pagar (~2 km southwest). Tampines (~12 km northeast), Jurong East (~14 km west), Changi Airport (~17 km northeast), Woodlands (~18 km northwest), and Tuas (~22 km west) fall just outside.
A 25 km radius from the Marina Bay centre reaches every named district — from Bedok (~9 km east) and Tampines (~12 km northeast) in the east, to Jurong East (~14 km west) and Tuas (~22 km west) in the west, Woodlands (~18 km northwest) at the Causeway, and Changi Airport (~17 km northeast) in the northeast. It's the smallest single radius that captures all of them.
Yes. Changi Airport sits about 17 km northeast of the Marina Bay centre, comfortably inside a 20 km radius. A 15 km radius does not quite reach it.
Woodlands sits about 18 km northwest of the Marina Bay centre, near the Causeway to Malaysia — well inside a 25 km radius and just outside a 10 km radius.
Because Singapore is a compact island city-state. The farthest named district from the Marina Bay centre, Tuas (~22 km west), is only about 22 km away, so a radius of roughly 25 km reaches every named district in one circle.
Centre a small radius — around 1 km — on the station itself to see the walkable catchment. For a wider view, a 10 km radius from the Marina Bay centre reaches east to Bedok (~9 km east), while a 25 km radius reaches every named district out to Tuas (~22 km west).