Coordinate ConverterCartography & GIS
Convert geographic coordinates (WGS84) to DMS (Degrees, Minutes, Seconds) and UTM projection zones.
Cartographic and geodesic transforms approximate localized ellipsoidal models. Real GIS engines require projection matrices such as NAD83/UTM or local state planes.
Explore Additional Utilities
Engine power ↔ hull speed — planing vs displacement
Estimate maximum displacement hull speeds (LWL formula) or calculate planing hull speeds using Crouch's classic marine formula.
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.
Premium Rate ↔ Sum Insured
Calculate basic insurance premium rates, loading factors, and sum insured relationships (percentage, permille, and absolute values).
Water Depth & Pressure Converter
Convert ocean depth between fathoms, meters, and feet, and estimate hydrostatic pressure and bathymetric marine zones.
Braille Translator (Grade 1)
Convert standard text into visual Grade 1 Braille cell dots, and design custom cells using an interactive 6-dot braille builder.
Carbon sequestration — tree species + size → kg CO2 stored
Estimate total green weight, dry organic biomass, carbon mass, and cumulative CO2 equivalent sequestered by an individual tree.
Carton CBM ↔ Container Capacity
Convert carton dimensions to Cubic Meters (CBM) and calculate carton capacity for 20ft and 40ft shipping containers.
Batting average ↔ on base percentage — baseball stats
Convert batting average, walks, and plate appearances into On-Base Percentage (OBP).
Stride length ↔ cadence ↔ running speed
Analyze running biomechanics: calculate speed based on cadence (SPM) and stride length.
eGFR Kidney Function Calculator
Calculate Estimated Glomerular Filtration Rate (eGFR) using the modern CKD-EPI (2021) equation to evaluate kidney stages.
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).
Tidal Rule of Twelfths Calculator
Estimate hourly tide heights and flow volumes between high and low tide periods using the standard maritime rule.
Animal Feed & Dry Matter Calculator
Convert animal body weight percentage dry matter intake (DMI) to daily feed requirements in kg/lbs, based on feed dry matter ratio and species presets.
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Chemical Solutions Concentration
Convert chemical solutions concentration (Molarity ↔ Molality ↔ PPM) and analyze mass ratios.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.
Certificate validity — days ↔ expiry date calculation
Convert between certificate lifetime in days, months, or years, and calculate exact UTC expiration times with leap year support.
Yarn Weight Converter
Convert yarn sizes across WPI (Wraps Per Inch), ply, and standard weight categories.
Oxygen Saturation & PaO2 Converter
Convert blood oxygen saturation (SpO2) to partial pressure of oxygen (PaO2) using the clinical Severinghaus-Ellis model.