Optics & Laser Calculators
Convert laser divergence angles to target spot sizes, measure hazardous power density concentration levels, evaluate optical density transmittance safety margins, design TIR fiber cores, and compute coupler Numerical Apertures.
Optical Density
Convert between Optical Density (OD), transmittance fraction/percentage, and attenuation factor for laser safety filters.
Safety Filter Inputs
Optics Engineering Report
Real-time Physics"Class 3B lasers, medium power laboratory/alignment diagnostics."
Explore Additional Utilities
Gather weight ↔ finished piece size estimate
Convert molten glass gather weight to finished dry piece volume and dimensions (hollow spheres, cylinders, bowls) based on thickness.
Wax yield — honey weight ↔ beeswax produced
Calculate estimated beeswax yields as a function of harvested honey comb or calculate honey consumption needed to build wax.
Prism Power Converter
Convert ophthalmic prism power between prism diopters (PD) and degrees of deviation, with light bending estimations.
Twist rate — caliber ↔ bullet length → stabilization
Calculate the optimal barrel rifling twist rate needed to stabilize a bullet of a given length, caliber, and velocity.
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.
Filament weight ↔ length (grams ↔ meters)
Convert between filament physical weight in grams and equivalent spool length in meters based on material density and diameter.
Half Value Layer (Shielding)
Calculate radiation intensity reduction through shielding materials (lead, steel, concrete, water) using half-value thickness and attenuation.
Saponification value — oil type ↔ lye required per gram
Look up sap values for standard oils and calculate custom lye weights.
Infill density (% ↔ structural strength)
Estimate mechanical tensile strength and relative part weight based on infill percentage, material choice, and shell count.
Watch beat rate — BPH ↔ Hz ↔ vibrations per hour
Convert mechanical watch balance wheel frequencies between Beats Per Hour (BPH), Vibrations Per Hour, and Hertz (Hz).
Soil Permeability Converter
Convert coefficient of permeability (hydraulic conductivity) between cm/s, m/day, ft/day, and m/s with soil type drainage classifications.
Sound Pressure Level (SPL) Converter
Convert sound pressure from Pascals (Pa) to decibels (dB SPL) and calculate distance attenuation or sound level summing.
Reverberation Time (RT60) Calculator
Estimate room RT60 reverberation times using Sabine and Eyring formulas, room volume, and surface absorption coefficients.
Layer height ↔ print time estimator
Estimate 3D print duration changes and total layer counts when switching layer heights and print speeds.
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) for clinical dosing using Mosteller, DuBois, Haycock, and Gehan-George formulas.
Cloud Base Height Estimator
Estimate cloud condensation levels and cloud base height based on temperature and dewpoint spreads.
Superfat percentage — excess oil ↔ skin conditioning level
Calculate excess unsaponified superfat oils and skin-conditioning moisture metrics.
Lux & Foot-Candles Photometry
Calculate architectural light levels, illuminance indexes, and foot-candle units.
Encoder resolution (PPR ↔ degrees per pulse)
Convert between encoder Pulses Per Revolution (PPR), Cycles Per Revolution (CPR), and angular resolution down to arcseconds.
Scientific Temperature Scale
Convert scientific scales between Celsius, Fahrenheit, Kelvin, and Rankine thermal indicators.