Industrial & Tire Pressure Calibrator
Convert heavy industrial or automotive pressure indicators across PSI, bar, kPa, and atm indexes.
Explore Additional Utilities
Canopy size — jumper weight ↔ wing loading
Calculate wing loading (lbs/sq ft) and find recommended parachute canopy sizes based on total jumper exit weight.
Water hardness — ppm ↔ grains per gallon ↔ mg/L
Convert brewing water hardness profiles between ppm, mg/L, Grains per Gallon (gpg), and German degrees (dGH).
GPS Format Converter
Convert global latitude and longitude between Decimal Degrees (DD) and Degrees Minutes Seconds (DMS).
Salinity — PSU ↔ g/kg ↔ % — seawater concentration
Convert between Practical Salinity Units (PSU), salinity concentration in g/kg (ppt ‰), and percentage (%).
Heat Index Feels-Like
Assess felt air heat indexes using ambient temperature and relative humidity thresholds.
Preservative usage rate — product weight ↔ grams needed
Determine exact weight additions of cosmetic-grade preservatives in grams based on batch specifications.
Electron volts ↔ joules ↔ nanometers — photon energy
Convert between photon energy (eV, Joules) and physical wavelengths (nm, pm) or frequency (THz).
Duration Converter
Convert time intervals seamlessly between weeks, days, hours, minutes, and seconds.
Rock density ↔ tonnage — volume to weight for blasting
Determine solid rock and broken loose rock tonnage from volume based on rock type densities, useful for blasting and haulage design.
Clinical Blood Pressure Gauges
Compare clinical medical blood pressure or vacuum values between mmHg and kPa units.
Pregnancy Due Date & Milestones
Calculate estimated due date (EDD), gestational age, fetal development sizes, and trimester milestones.
Essential oil dilution — drops ↔ % in carrier oil
Convert dilution percentages to drop counts and precise weights for facial, body, and therapeutic carrier oils.
Unix Epoch Converter
Convert Unix epochs (seconds/milliseconds) to human-eye standard DateTimes, and transform local dates to Epoch times.
Lumens & Bulb Wattage Equivalence
Compare light outputs in lumens with electrical consumption in bulb watts.
Thermohaline density — temperature + salinity → seawater density
Determine seawater density and specific volume from water temperature and salinity using the UNESCO International Equation of State.
Drill bit size — inches ↔ mm ↔ gauge number
Convert drill bit diameters between fractional/decimal inches, millimeters, and drill gauge number sizes.
Exposure Value (EV) & Lux Converter
Convert between EV and various shutter speed, aperture, and ISO combinations, with equivalent scene lux and EV100 references.
Land Area & Acres Metric
Evaluate acreage, hectares, square meters, and square feet calculations.
Clay shrinkage — wet size ↔ fired size
Calculate wet, bone-dry, and kiln-fired pottery dimensions and analyze total contraction rates.
DPI / PPI Converter
Convert image pixel dimensions into physical print sizes (inches/cm) at any target resolution.