Ammonia Toxicity (NH3 vs NH4+)Aquaculture Tech
Calculate the highly toxic un-ionized ammonia (NH3) fraction from Total Ammonia Nitrogen (TAN), pH, and water temperature.
As measured by standard chemical test kits (combined NH3 and NH4+).
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.
Nitrification rate in biofilter is insufficient. Flush lines, reduce stocking bio-load, and monitor feeding.
Explore Additional Utilities
Aviation Fuel Weight Calculator
Calculate volume-to-weight changes for standard aviation fuels (Jet A-1, Avgas) across metric and imperial systems.
Board size — rider weight ↔ wind conditions → liters
Calculate optimal board size, volume, and dimensions for your riding style.
Fold ratio — paper thickness ↔ maximum folds possible
Compute theoretical limit of fold iterations possible for paper size and thickness (Britney Gallivan equation).
Frequency ↔ Wavelength (Sound)
Convert between sound frequency and wavelength in air or water, considering temperature and medium sound speed variations.
Dewpoint & Relative Humidity Calculator
Calculate dewpoint, relative humidity, or air temperature using the Magnus-Tetens formula.
Soil Permeability Converter
Convert coefficient of permeability (hydraulic conductivity) between cm/s, m/day, ft/day, and m/s with soil type drainage classifications.
eGFR Kidney Function Calculator
Calculate Estimated Glomerular Filtration Rate (eGFR) using the modern CKD-EPI (2021) equation to evaluate kidney stages.
Tablet Splitting & Cost Calculator
Calculate tablet splitting doses, available whole/half combinations, cost savings, and review critical pill splitting safety guidelines.
Troy ounce ↔ gram ↔ pennyweight
Convert weights of precious metals like gold, silver, and platinum between Troy ounces, grams, and pennyweight (dwt).
Tank turnover rate — volume ↔ pump flow → exchanges per hour
Determine water exchange rate per hour and cycle duration based on tank volume and pump flow rate specifications.
Pump Efficiency Calculator
Calculate pump efficiency and hydraulic power based on volumetric flow rate, head height, fluid density, and input shaft power.
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.
Water discount — full water ↔ reduced water ratio
Optimize water discount levels and water-to-lye concentration ratios to speed up soap curing.
Drug Concentration Converter
Convert pharmaceutical concentrations between % w/v, mg/mL, and mol/L using substance molecular weight presets.
Pipe Flow Rate Calculator
Calculate water flow rate, velocity, and capacity under gravity or pressurized nozzle flow.
U-value ↔ thermal performance — double vs triple glazing
Analyze thermal conductivity (U-values and R-values) for energy-efficient glazing window performance.
Dye concentration — wax weight ↔ color chips needed
Determine dry color chips or fluid dye drops needed based on total wax weight and target color depth.
Varroa mite load — alcohol wash count ↔ treatment threshold
Input alcohol wash or powdered sugar shake counts to analyze parasite load percentage and check treatment recommendations.
Paper size ↔ finished model size — origami scaling
Determine required starting paper square dimensions to fold specific final 3D origami model sizes.
Feed conversion ratio — feed weight ↔ fish weight gain
Determine feed efficiency (FCR), specific growth rate, and economic cost per kg of fish biomass gain.