Engine Calc: Fuel & Slip

Engine Calculators is a complete offline toolset for marine engineers and engine room staff. It provides oil calculators, engine power estimations, slip calculations, and unit converters — everything needed for daily engine room operations. Included Calculators: - Oil Calculator Manual & automatic calculation of oil quantities. Supports tank setup, tank tables, and geometry for fast and accurate results. - Main Engine Power Calculator Estimate engine power output based on entered parameters. - Slip Calculator Calculate propeller slip — the difference between theoretical and actual vessel speed. - Unit Converter Convert engineering and maritime units: stowage factor, volume, length, speed, temperature, and more. Features: 1. Offline use – designed for engine rooms and sea operations. 2. Google Drive backup – secure recovery of Oil Calculator data. 3. Light & dark themes – adaptable to working conditions. 4. Focused UI – clear input/output for fast, practical use. Designed For: - Marine engineers monitoring fuel and oil on board. - Engine room staff calculating slip and engine power. - Professionals on tankers, bulk carriers, container ships, and offshore vessels. Engine Calculators improves accuracy and efficiency in real-world shipboard operations, making daily engineering tasks easier and faster.