Feed Conversion Ratio (FCR)Aquaculture Tech
Determine feed efficiency (FCR), specific growth rate, and economic cost per kg of fish biomass gain.
Calculates aggregate farm biomass increase compared with aggregate dry feed inputs.
Aquatic ecosystems are dynamic biological buffers. Physical parameters like dissolved oxygen levels must be cross-checked with biological and chemical filtration limits to maintain optimum fish welfare.
Extremely efficient nutrient conversion. Typical of optimized salmonid setups or very young fry.
Explore Additional Utilities
Wick size ↔ container diameter — burn pool coverage
Find recommended wick sizes based on container diameter, wax type, and burn pool coverage guidelines.
Cabochon dome height ↔ base diameter ratio
Calculate cabochon dome proportions, bezel edge thickness, and curvature radii based on base shapes.
Wind Chill Calculator
Determine the feels-like wind chill index from ambient air temperature and wind speed.
Watch case size — mm diameter ↔ lug width
Analyze watch case diameter proportions, lug-to-lug spans, and find the corresponding standard strap lug-width sizes.
Arrow spine ↔ draw weight + length — stiffness matching
Estimate required arrow static spine rating (stiffness) based on bow draw weight, arrow length, and bow type.
Blood Glucose Converter
Convert blood glucose levels between mmol/L and mg/dL, with diabetic range assessments and HbA1c approximations.
U-value ↔ thermal performance — double vs triple glazing
Analyze thermal conductivity (U-values and R-values) for energy-efficient glazing window performance.
Fragrance load — wax weight ↔ % ↔ grams of scent
Calculate fragrance oil weight based on wax weight and target fragrance load percentage.
Visual Acuity Converter
Convert visual acuity measurements between Snellen US (20/20), Snellen Metric (6/6), decimal, LogMAR, and Percentage systems.
Dewpoint & Relative Humidity Calculator
Calculate dewpoint, relative humidity, or air temperature using the Magnus-Tetens formula.
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) for clinical dosing using Mosteller, DuBois, Haycock, and Gehan-George formulas.
Button Size Converter
Convert button measurements between traditional ligne (L), millimeters, and fractional inches.
Stocking density — fish size ↔ liters per kg
Calculate stocking density (kg/m³ or L/kg), total biomass, and maximum safe fish count based on tank volume and average fish weight.
Dissolved oxygen — mg/L ↔ % saturation at temperature
Convert between DO mg/L and % saturation. Analyze solubility boundaries based on water temperature and salinity.
Foreign Exchange Cross Rates
Compare conversion values and custom exchange indicators across popular global currencies.
Drug Concentration Converter
Convert pharmaceutical concentrations between % w/v, mg/mL, and mol/L using substance molecular weight presets.
Infill density (% ↔ structural strength)
Estimate mechanical tensile strength and relative part weight based on infill percentage, material choice, and shell count.
Color Code Converter
Instantly convert between HEX, RGB, HSL, and CMYK color spaces with a visual real-time preview and slider inputs.
Yarn Weight Converter
Convert yarn sizes across WPI (Wraps Per Inch), ply, and standard weight categories.
Mohs Hardness & Scratch Resistance
Compare minerals, absolute hardness values, and scratch interactions using the classic 1-10 Mohs scale and Knoop indentation hardness.