Sailing & Wind Mechanics
Interactive polar vector conversion, boat hydrostatic stability modeling, performance metrics, and navigation vector calculations.
1. Rig & Ballast Configuration
2. Performance Metrics & Hull Analysis
Very powerful sail plan relative to hull weight. Demands skilled active sail trim to avoid overpowering.
SADR is computed by dividing the Sail Area in square feet by the vessel’s displacement in cubic feet of sea water raised to the 2/3 power.
SADR = SailArea (ft²) / [ Displacement (lbs) / 64 ]^(2/3)Explore Additional Utilities
Base64 ↔ hex ↔ binary — encoding format converter
Convert raw text strings or bytes bidirectionally between Base64, Hexadecimal, Binary, and standard ASCII formats.
Brood frame count ↔ colony population estimate
Convert frame counts of capped brood to estimate total emerging colony population and overall workforce strength.
Effect size — Cohen's d ↔ r ↔ odds ratio
Convert between various effect size measures like Cohen's d, Pearson correlation r, and Odds Ratio for scientific research interpretation.
Sandpaper grit — CAMI ↔ FEPA ↔ micron rating
Convert and compare sandpaper abrasive grit sizing standards between CAMI, FEPA (P-grade), and average micron rating.
Premium Rate ↔ Sum Insured
Calculate basic insurance premium rates, loading factors, and sum insured relationships (percentage, permille, and absolute values).
Bearing ↔ azimuth ↔ compass direction — navigation angles
Convert between 360-degree azimuths, quadrant compass bearings (e.g., N45°E), and cardinal directions for mapping and surveying.
Exposure Triangle & F-Stop
Calculate absolute stop adjustments, exposure reciprocal tradeoffs, f-stop quotients, and ISO noise tradeoffs.
Ballistic Mils ↔ Angles
Convert between ballistics mils (NATO, Warsaw, Swedish), degrees, and MOA, with range estimation calculators.
Soil Plasticity Index Calculator
Calculate Plasticity Index (PI) from Liquid Limit (LL) and Plastic Limit (PL), and interpret soil state using the Atterberg limits chart.
Pipe Flow Rate Calculator
Calculate water flow rate, velocity, and capacity under gravity or pressurized nozzle flow.
Soil Permeability Converter
Convert coefficient of permeability (hydraulic conductivity) between cm/s, m/day, ft/day, and m/s with soil type drainage classifications.
Chemical Solutions Concentration
Convert chemical solutions concentration (Molarity ↔ Molality ↔ PPM) and analyze mass ratios.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Thermal expansion coefficient — glaze fit calculation
Predict glaze-on-clay crazing or shivering by matching thermal expansion coefficients (COE).
Brick Count Estimator
Calculate bricks, mortar volume, sand, and cement needed for masonry walls.
Knitting Gauge Converter
Convert knitting and crochet stitches and rows count between centimeters and inches.
eGFR Kidney Function Calculator
Calculate Estimated Glomerular Filtration Rate (eGFR) using the modern CKD-EPI (2021) equation to evaluate kidney stages.
Hash output size — MD5 ↔ SHA1 ↔ SHA256 ↔ SHA512 bits
Analyze hash function characteristics (MD5, SHA-1, SHA-2, SHA-3), including bit size, hex length, collision vulnerability, and use cases.
Cooling load — room size ↔ BTU ↔ tons of refrigeration
Calculate room-by-room air conditioner cooling load requirements in BTU, tons, and kilowatts based on area, insulation, and occupants.
Tablet Splitting & Cost Calculator
Calculate tablet splitting doses, available whole/half combinations, cost savings, and review critical pill splitting safety guidelines.