Hydraulics & Fluid Lab
Convert volumetric flows, interconvert dynamic and kinematic viscosity, analyze fluid head pressure columns, model pump efficiency curves, and visualize Reynolds flow regimes.
Flow Rate
Convert volumetric flow rates between cubic meters per second (m³/s), liters per minute (L/min), gallons per minute (GPM), and other units.
Explore Additional Utilities
Vibration Converter (d ↔ v ↔ a)
Convert sinusoidal mechanical vibration parameters between displacement, velocity, and acceleration at a given frequency.
Dog Age ↔ Human Age Equivalent
Calculate the human age equivalent of a dog based on their age and breed size category (small, medium, large, or giant), using modern veterinary curves.
Arrow spine ↔ draw weight + length — stiffness matching
Estimate required arrow static spine rating (stiffness) based on bow draw weight, arrow length, and bow type.
Map scale — representative fraction ↔ bar scale
Convert map scale representative fractions (e.g., 1:24,000) to paper sizes, real-world distances, and graphical bar scales.
Wind Chill Calculator
Determine the feels-like wind chill index from ambient air temperature and wind speed.
Crease pattern scale — diagram size ↔ actual paper needed
Scale geometric origami crease patterns and tessellations to starting square sheet sizes.
Infill density (% ↔ structural strength)
Estimate mechanical tensile strength and relative part weight based on infill percentage, material choice, and shell count.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Knitting Gauge Converter
Convert knitting and crochet stitches and rows count between centimeters and inches.
True wind ↔ apparent wind
Calculate apparent wind speed and angle from true wind speed, sailing angle, and boat speed (or vice versa).
Swimming Pace & Yardage Converter
Convert swim splits and paces between per-100m, per-100 yards, and overall distances with custom pool sizes.
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.
Dewpoint & Relative Humidity Calculator
Calculate dewpoint, relative humidity, or air temperature using the Magnus-Tetens formula.
Soil Bearing Capacity Converter
Convert soil bearing capacities between Kilopascals (kPa), Tons per Square Foot (tsf), Pounds per Square Foot (psf), and kg/cm² with typical soil range guides.
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) for clinical dosing using Mosteller, DuBois, Haycock, and Gehan-George formulas.
Watch beat rate — BPH ↔ Hz ↔ vibrations per hour
Convert mechanical watch balance wheel frequencies between Beats Per Hour (BPH), Vibrations Per Hour, and Hertz (Hz).
Stepper motor steps (degrees ↔ steps ↔ microsteps)
Convert between motor rotation angles in degrees, physical steps, and microsteps based on step angle and microstepping resolution.
Wet folding moisture — paper weight ↔ water absorption
Calculate optimal water moisture weight to apply based on paper GSM and wood fiber absorption capacity.
Carbon Footprint Calculator
Convert between distance driven (km or miles) and greenhouse gas emissions (kg CO2) across various vehicle fuel types and efficiencies.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.