End the Metric/Imperial Confusion Once and For All
Every mariner knows the frustration: recipes in cups and ounces, engine manuals in bar and celsius, charts in fathoms and meters. Our conversion tools instantly translate between metric and imperial units, keeping a log for compliance and reference.
Split into Galley and Engine Room sections, find exactly what you need, when you need it. No more googling conversions or keeping conversion charts taped to the wall.
Cups ↔ ML: "2.5 cups of flour"
°F ↔ °C: "Bake at 350°F"
LBS ↔ KG: "3 pound roast"
OZ ↔ Grams: "8 oz cheese"
Gallons ↔ Liters: Stock planning
PSI ↔ Bar: "Oil pressure 50 PSI"
HP ↔ kW: "750 HP main engine"
NM ↔ KM: "Range calculations"
Gallons ↔ Liters: Fuel transfers
Inches ↔ MM: Spare parts
Feet ↔ Meters: "50 ft yacht"
Fathoms ↔ Meters: Anchor depth
Knots ↔ KM/H: Speed limits
Tons ↔ Tonnes: Cargo weight
SQ FT ↔ SQ M: Deck space
Type a number, select units, get your answer. No clicking "calculate" buttons.
Every conversion saved with timestamp - perfect for compliance and reference.
Galley, Engine, and Deck tools separated so you find what you need fast.
Quick buttons for frequent conversions like oven temperatures and pressure readings.
Works perfectly on phones - convert while holding a wrench or mixing bowl.
See your most common conversions and create shortcuts for efficiency.
Every conversion is automatically logged with:
Perfect for demonstrating calculations during inspections or verifying critical conversions for safety equipment, load calculations, or regulatory compliance.
Convert as much as you need for free. Upgrade to premium for conversion history, compliance logs, custom shortcuts, and detailed reports showing all calculations made on your vessel.