Conversion
Maritime Converter
Distance, speed, cargo, volume, bunker and technical unit conversions.
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Tide Signal Tools
Maritime Tools
Calculators and conversion references for voyage planning, cargo, bunkers and commercial shipping work.
Voyage planning
Voyage ETA Calculator
Sea time, ETA, routing allowance, daily run, fuel and bunker cost.
Open ETA calculator
Commercial
Voyage Margin Calculator
Freight, commissions, voyage costs, margin, break-even freight and TCE.
Open margin calculator
Professional maritime reference tools
Tide Signal Tools are designed for quick working estimates used in shipping, chartering and vessel operations. Calculations run in the browser and are intended as practical references before figures are checked against charterparty terms, vessel data, approved documents and company procedures.