Current Speed Converter
Convert tidal, ocean, and river current speeds between knots, meters per second (m/s), and kilometers per hour (km/h).
Explore Additional Utilities
High-Altitude Baking Adjustments
Adjust bread/pastry structures for high altitude low atmospheric pressure.
Dimensional Weight ↔ Chargeable Weight
Calculate shipping dimensional weight based on L x W x H using standard carrier factors, and determine final chargeable weight.
Legal Billable Hours Estimator
Convert word count of legal drafting documents to estimated billable hours based on complexity and billing rates.
pH Acid/Base Index
Evaluate hydrogen ion concentrations and check acidic or alkaline levels using pH logarithmic scales.
Water cement ratio ↔ compressive strength
Estimate 28-day concrete compressive strength from the water-cement (W/C) ratio using Abrams' Law, or solve for desired strengths.
Numerical aperture ↔ acceptance angle — fiber coupling
Determine light coupling capabilities, supported modes, V-numbers, and acceptance cone widths for optical optical fibers.
Dovetail angle — ratio ↔ degrees for hardwood vs softwood
Convert dovetail joint slope ratios (e.g. 1:6, 1:8) to slope angles in degrees and verify hardwood/softwood suitability.
IPv4 ↔ decimal ↔ binary — IP address formats
Translate standard dot-decimal IPv4 addresses to raw decimal integers and 32-bit binary representations.
Percentile ↔ z-score ↔ standard deviation
Determine z-scores, percentiles, standard deviation steps, and probability density for standard normal distribution curves.
Sandpaper grit — CAMI ↔ FEPA ↔ micron rating
Convert and compare sandpaper abrasive grit sizing standards between CAMI, FEPA (P-grade), and average micron rating.
Gear ratio ↔ final drive speed — RPM at given speed
Calculate vehicle road speed or engine RPM based on transmission gear ratios, final drive axle ratio, and tire dimensions.
Scientific Temperature Scale
Convert scientific scales between Celsius, Fahrenheit, Kelvin, and Rankine thermal indicators.
Exposure Value (EV) & Lux Converter
Convert between EV and various shutter speed, aperture, and ISO combinations, with equivalent scene lux and EV100 references.
Heat Index Feels-Like
Assess felt air heat indexes using ambient temperature and relative humidity thresholds.
Packet size ↔ transmission time — network planning
Model network serialization delays and transit times across various network speeds and bandwidth options.
DPI Screen Density Sizing
Calculate typographic sizing differences across varying screen device densities and target DPI scopes.
Magnetic Declination
Estimate compass alignment values and offset angles between magnetic north and true north.
Period Tracker & Predictor
Track menstrual cycles, predict future period start dates, cycle phases, and typical symptom occurrences.
Pallet Configuration (Boxes/Pallet)
Optimize pallet loading layouts by calculating maximum box stacking of specified dimensions onto standard pallet sizes.
Text Case Converter
Swiftly switch text between UPPERCASE, lowercase, camelCase, snake_case, or Title Case.