Acoustics & Vibration Lab
Simulate soundwaves, calculate octave frequency band ranges, model reverberant spaces, evaluate sinusoidal mechanical structures, and sum logarithmic decibels.
Vibration (d ↔ v ↔ a)
Interconvert sinusoidal displacement, velocity, and acceleration parameters at any given physical frequency.
Explore Additional Utilities
ISO Week Number ↔ Calendar Date
Calculate ISO 8601 week numbers, week dates, and determine start/end weekdays of any given week year.
Altitude sickness risk — elevation gain per day ↔ acclimatization
Calculate acute mountain sickness (AMS) risk based on ascent rate, sleeping altitude, and acclimatization days.
Reading & Speaking Timer
Convert total word counts to estimated reading or speaking time at standard speeds.
Battery capacity — Ah ↔ Wh ↔ days of autonomy
Convert between Amp-hours (Ah) and Watt-hours (Wh) and calculate battery bank backup days of autonomy based on loads.
Chemical Solutions Concentration
Convert chemical solutions concentration (Molarity ↔ Molality ↔ PPM) and analyze mass ratios.
Wind Turbine Power Generator
Estimate power output (watts) of a wind turbine based on wind speed, rotor diameter, blade sweep area, and aerodynamic power coefficients.
True wind ↔ apparent wind
Calculate apparent wind speed and angle from true wind speed, sailing angle, and boat speed (or vice versa).
Gray ↔ rad (Absorbed Dose)
Convert between Gray (Gy), rad, milligray (mGy), and microrad (µrad) to analyze absorbed ionizing radiation energy per unit mass.
Earthquake Magnitude (Richter ↔ Moment)
Convert and compare earthquake energy release, shaking amplitude, and felt effects between Richter (ML) and Moment Magnitude (Mw) scales.
Text Case Converter
Swiftly switch text between UPPERCASE, lowercase, camelCase, snake_case, or Title Case.
Ore dilution — grade ↔ waste ↔ recovered grade
Calculate recovered ore grade, tonnage adjustments, dilution percentages, and mining waste contamination levels.
NATO Phonetic Alphabet
Spell out commands or names phonetically using the standard military/aviation phonetic alphabet.
Angular Scales & Rotations
Convert degrees, radians, and gradians for geometric or angular rotations.
Shrinkage allowance — finished size ↔ cut size
Calculate required pattern cut sizes from finished garment specs or expected post-wash sizes.
Atomic mass units ↔ grams — mole calculations
Convert Atomic Mass Units (u / Da) to grams or kilograms, and compute molar quantities of chemical elements.
Soil Compaction Ratio Calculator
Calculate and convert soil compaction ratio, loose volume, compacted volume, and shrink/swell factor for cut-and-fill operations.
Paper weight — gsm ↔ lb bond ↔ lb cover ↔ lb text
Convert paper weights between Grams per Square Meter (GSM) and standard US basis weights (Bond, Text/Book, Cover).
Diopter ↔ Focal Length Converter
Convert between lens diopters and focal length in meters, millimeters, or inches, and calculate eyeglass lens power requirements.
Length Converter
Convert between meter, kilometer, centimeter, mile, yard, foot, inch, and more.
Propeller pitch ↔ boat speed — theoretical boat speed
Calculate theoretical boat speed and actual speed based on propeller pitch, engine RPM, gear ratio, and hull slip percentages.