Geotechnical & Soil Lab
Convert soil bearing capacities, calculate loose-compacted volumes, model groundwater hydraulic flow with Darcy\'s Law, interpret Atterberg limits, and run USCS sieve classifications.
Soil Permeability
Convert permeability (hydraulic conductivity) and simulate groundwater flow rates using Darcy's Law.
Explore Additional Utilities
Supersonic Mach Speed
Assess sonic speed boundaries and atmospheric Mach velocities relative to local dry conditions.
Fabric & Thread Density Calibrator
Analyze fabric weights, compare cotton single-ply thread counts, and calculate textile density.
Bullet drop — distance ↔ inches ↔ cm at given range
Estimate bullet drop trajectories over distance based on muzzle velocity, projectile mass, and gravitational pull.
Laser power density — watts ↔ W/cm² at given spot size
Calculate average and peak power intensity (W/cm²) on target spot sizes for Flat-Top and Gaussian profiles.
Alcohol by Volume & Proof Converter
Convert between alcohol by volume (ABV), proof, and standard alcohol units for drinks and home brewing.
Cable loss — frequency + length → signal attenuation
Estimate transmission line losses and remaining signal power for standard coaxial cables and optical fiber spans.
Marine Fuel Consumption Estimator
Estimate marine engine fuel consumption in liters per hour at given RPM values using theoretical propeller law curves.
Yeast Equivalents Calculator
Calibrate biological yeast weights and convert between fresh, active dry, and instant yeasts.
Egg Size Converter
Convert egg counts and liquid weights across standard small, medium, large, and extra-large eggs.
Soil pH & Amendment Calculator
Calculate the required lime or sulfur applications needed to correct soil acidity/alkalinity for plant growth.
Grout coverage — tile size ↔ joint width → bags needed
Estimate dry grout requirements based on tile dimensions, joint width, joint depth, and overall surface area.
Board feet ↔ cubic meters ↔ cubic feet — lumber volume
Convert lumber volume measurements between Board Feet, Cubic Feet, and Cubic Meters.
Key length ↔ security bits — RSA vs AES equivalence
Compare security levels (bits of security) across symmetric keys, RSA, and Elliptic Curve Cryptography (ECC) based on NIST standards.
Scientific Temperature Scale
Convert scientific scales between Celsius, Fahrenheit, Kelvin, and Rankine thermal indicators.
Displacement tonnage ↔ cubic meters — ship buoyancy
Convert ship displacement tonnage to submerged volume (m³) and buoyancy force. Choose between freshwater and saltwater standards.
Salinity — PSU ↔ g/kg ↔ % — seawater concentration
Convert between Practical Salinity Units (PSU), salinity concentration in g/kg (ppt ‰), and percentage (%).
Engineering Slope & Gradients
Compare elevation grades, percentage slopes, and corresponding degrees.
Fuel burn rate — engine HP ↔ liters per hour
Calculate marine engine fuel consumption (liters/hr or gal/hr) using Brake Specific Fuel Consumption (BSFC) or standard marine power constants.
ND Filter Stops Converter
Convert ND filter labels (ND density, optical density, and stop reduction) and calculate long exposure shutter speed compensation.
File Transfer Duration
Dynamically forecast transmission speed durations for different file size sizes.