Singapore to Bangkok Sea Distance Calculator

Calculate the exact nautical distance from Singapore, Singapore to Bangkok, Thailand. Plan your maritime journey with our professional route calculator.

Distance: 810.2 nm; nautical miles
Under Sail: 6.8 days; at 5 knots
Under Power: 3.4 days; at 10 knots
Best Time: November-March; Typical Sailing Season

Distance follows a sea-lane route. Sailing times are estimates at fixed cruising speeds and vary with vessel, weather, and currents.

Interactive Route Map

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Distance: 810.2 nautical miles

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This map shows the direct sea route from Singapore to Bangkok. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a moderately indirect coastal passage: the navigable route runs 11% longer than the 731 nm direct line, its heading turning from west to east-northeast. It is an international crossing between two countries.

Sea distance: 810.2 nm (1500.5 km)
Direct line: 731.1 nm11% longer
Great-circle bearing: 346° (north-northwest)
Geographic extent: 11.9° × 3.9°
Crossing: Cross-border · Same region
From: Singapore (Singapore) 1.2655, 103.8186
To: Bangkok (Thailand) 13.0998, 100.9200
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	6.8 days
8 kn	4.2 days
10 kn	3.4 days
12 kn	2.8 days

Distance follows a sea-lane route generated from marine traffic lanes; passage times are computed at fixed cruising speeds.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Singapore to Bangkok Route

The maritime route from Singapore to Bangkok is a long-haul ocean cross-border passage between two major harbours in the Southeast Asia region. Mariners on this leg typically prepare for monsoon transitions and afternoon squalls in the South China Sea.

This route runs between neighbouring ports of the same region, connecting Singapore in Singapore with Bangkok in Thailand.

Navigation Tips

•On this long-haul ocean cross-border crossing in the Southeast Asia region, prepare for monsoon transitions and afternoon squalls in the South China Sea, particularly in peak season.
•For a long-haul ocean route, plan fuel and provisioning around the Southeast Asia region — calculate consumption with our tool.
•Verify port-entry requirements at both ends of this cross-border route between neighbouring ports of the same region before you depart.
•Check safety gear suited to Southeast Asia conditions before a long-haul ocean passage — life rafts, EPIRB, and current charts.
•Carry passports, vessel documents, and crew lists matched to this cross-border route between neighbouring ports of the same region.

Suggested Stops

On a long 810.2 nm passage from Singapore to Bangkok, these ports make convenient places to break the journey, refuel, and rest.

Kirteh Oil Terminal (Malaysia) · ≈259 nm in — View port details
Bongkot Terminal (Thailand) · ≈476.9 nm in — View port details

More Routes from Singapore

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Frequently Asked Questions

How far is it from Singapore to Bangkok by sea?

The sea distance from Singapore to Bangkok is approximately 810.2 nautical miles — a long-haul ocean passage in Southeast Asia.

How long does it take to sail from Singapore to Bangkok?

A long-haul ocean between neighbouring ports of the same region crossing of 810.2 nautical miles typically takes 3.4 days – 6.8 days, depending on vessel and weather.

What's the best time to sail from Singapore to Bangkok?

The best time for this route in Southeast Asia is November-March, when conditions are most favourable; expect monsoon transitions and afternoon squalls in the South China Sea outside that window.

Plan Your Perfect Maritime Journey

Use our advanced calculator above to customize your route, add waypoints, calculate fuel costs, and share your journey plan with crew members.

Plan another route with our Sea Distance Calculator Navigation Guide