Nuclear & Radiation Lab
Calibrate absorbed doses, evaluate safety equivalents, translate decay activity levels, and model electromagnetic ionizing attenuation through safety shielding.
Becquerel ↔ curie (Activity)
Convert between Becquerels (Bq), Curies (Ci), rutherfords, and decay rates to evaluate isotope source strengths and nuclear decay events.
Explore Additional Utilities
International Ring Size Matcher
Compare finger size rings across US, UK, Europe, and Asian dimensions.
Concrete strength — MPa ↔ psi ↔ N/mm²
Convert concrete compressive strength between MPa, psi, and N/mm². View typical application guidelines and concrete classes.
U-value ↔ thermal performance — double vs triple glazing
Analyze thermal conductivity (U-values and R-values) for energy-efficient glazing window performance.
Julian ↔ Gregorian Calendar
Convert between Julian Dates (JD, MJD) and standard Gregorian calendar dates with day of the year and century metrics.
Thermal conductivity — W/m·K ↔ BTU·in/hr·ft²·°F
Translate thermal conductivity values between W/m·K, BTU·in/hr·ft²·°F, and other units.
Specific heat capacity — J/kg·K ↔ BTU/lb·°F
Convert between specific heat capacity units including J/kg·K, kJ/kg·°C, BTU/lb·°F, and cal/g·°C.
Engine displacement — cc ↔ cubic inches ↔ liters
Convert and calculate total engine volume in cc, cubic inches, and liters using cylinder bore, piston stroke, and cylinder count.
Enthalpy ↔ temperature ↔ pressure — steam tables
Estimate saturated water and steam properties including boiling point, saturated pressure, and enthalpies.
Magnetic Declination
Estimate compass alignment values and offset angles between magnetic north and true north.
Latency ↔ distance — speed of light in fiber
Calculate propagation delay and round-trip time (RTT) for signals traversing fiber optic, copper, air, or vacuum.
Carnot efficiency — hot ↔ cold temperature → max efficiency
Calculate the maximum theoretical thermal efficiency (Carnot Limit) of heat engines based on reservoir temperatures.
Beam divergence — mrad ↔ degrees ↔ spot size at distance
Calculate equivalent divergence angles and spot diameter at target plane from exit waist apertures.
Weld throat thickness ↔ leg length — fillet weld geometry
Convert between throat thickness and leg length for fillet welds. Estimate joint volume, weld weight, and shear load capacity.
Clinical Blood Pressure Gauges
Compare clinical medical blood pressure or vacuum values between mmHg and kPa units.
MAC address formats — colon ↔ hyphen ↔ Cisco notation
Convert physical MAC addresses between IEEE colon, hyphen, Cisco dot format, and raw hex strings.
Responsive Font Units Converter
Compute points, pixels, em, rem web font guidelines, and equivalent font sizes.
Wire feed speed ↔ amperage — MIG welding settings
Calculate MIG wire feed speed (WFS) and matching amperage. Includes gas recommendations and presets for steel, stainless, and aluminum.
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.
Shorthand speed — words per minute ↔ strokes
Analyze cursive shorthand writing velocities (Gregg, Pitman, Teeline) to compare stroke density limits and WPM targets.
Chlorophyll concentration ↔ water color index
Convert Chlorophyll-a bio-concentrations (mg/m³) to ocean water color classes, Forel-Ule index, and trophic status.