Nuclear & Radiation Lab
Calibrate absorbed doses, evaluate safety equivalents, translate decay activity levels, and model electromagnetic ionizing attenuation through safety shielding.
Half Value Layer (Shielding)
Estimate radiation attenuation through protective shielding materials like lead, steel, concrete, and water using linear attenuation coefficients.
(5.0 cm)
Explore Additional Utilities
Spring rate — lb/in ↔ N/mm — suspension setup
Convert suspension coil spring stiffness between lb/in and N/mm. Estimate coil spring rates using wire diameter, coil diameter, and active counts.
Oven Temperature & Gas Marks
Convert oven temperature heat indexes between Celsius, Fahrenheit, and official Gas Marks.
Color Temperature Converter
Convert between color temperature in Kelvin and Mired units, with descriptive lighting labels and photographic application guides.
Pipe Flow Rate Calculator
Calculate water flow rate, velocity, and capacity under gravity or pressurized nozzle flow.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.
Wind window — apparent wind angle ↔ power zone position
Determine apparent wind speed, angle, and optimal power zone placement.
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
Sidereal Time Converter
Convert between standard Solar Time and Sidereal Time based on your longitude.
Notarial Fee & Page Tier Calculator
Calculate official notary fees based on document page counts, copy requirements, travel, and custom tier structures.
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.
Paint Coverage Calculator
Estimate the gallons or liters of paint needed based on area and number of coats.
VO2 Max & Aerobic Capacity Estimator
Convert running race times or heart rates into VO2 Max estimates and aerobic fitness classifications.
Board feet ↔ cubic meters ↔ cubic feet — lumber volume
Convert lumber volume measurements between Board Feet, Cubic Feet, and Cubic Meters.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) for clinical dosing using Mosteller, DuBois, Haycock, and Gehan-George formulas.
pH adjustment — acid/alkali drops ↔ pH change estimate
Estimate acidifying or alkalizing solution amounts to safely adjust formulation pH values.
Legal Billable Hours Estimator
Convert word count of legal drafting documents to estimated billable hours based on complexity and billing rates.
Yeast Equivalents Calculator
Calibrate biological yeast weights and convert between fresh, active dry, and instant yeasts.
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.
Drug Half-Life & Scheduling
Model drug half-life elimination, dosing accumulation ratios, times to steady-state, and clearance curves with interactive charts.