Tide Signal Tools
Maritime Converter
Quick conversions for voyage planning, cargo checks, bunker quantities and technical shipping references.
Maritime unit converter for shipping operations
Shipping work regularly moves between nautical, metric and imperial units. This converter brings the most common voyage, cargo, bunker and technical conversions into one reference page, including nautical miles, knots, metric tons, long tons, barrels, cubic metres, fuel density, pressure and temperature.
Bunker quantity and density conversions
Fuel quantities may be reported by volume while commercial and operational records often use mass. When density is available, the bunker conversions can estimate metric tons from cubic metres and the reverse. For final figures, use the density and quantity stated in the applicable bunker documentation.
Indicative calculations
The converter is intended for quick checks. It does not replace approved voyage calculations, cargo documents, bunker delivery notes, class requirements, charterparty terms or professional review.
Maritime Converter FAQ
What does the Maritime Converter calculate?
It converts common shipping units for distance, speed, cargo weight, volume, bunkers and technical references, including nautical miles, knots, metric tons, long tons, barrels, cubic metres, pressure and temperature.
Why is bunker density required for some conversions?
Density links fuel volume to mass. A cubic-metre quantity cannot be converted accurately to metric tons without a density assumption or measured density.
Can these figures be used as official voyage figures?
No. They are working references. Official operational, contractual or financial figures should be verified against the relevant approved data and documents.