Stage Lighting (Lux ↔ fc ↔ Beam)Event & Production
Convert illuminance between Lux and Foot-candles. Calculate beam spread coverage diameter and center-beam intensity at specific throw distances.
The throw distance greatly affects perceived light levels because intensity degrades with the square of the distance. Wider beam angles spread the light energy over larger surface areas, reducing lux rapidly.
Standard light level for corporate panel discussions, general stage lighting, or acoustic sessions.
Explore Additional Utilities
Electron volts ↔ joules ↔ nanometers — photon energy
Convert between photon energy (eV, Joules) and physical wavelengths (nm, pm) or frequency (THz).
URL Slug Generator
Generate clean, hyphenated, SEO-friendly slugs from any string with custom separators.
SNR ↔ bit error rate — signal quality assessment
Analyze theoretical Bit Error Rate (BER) curves against Signal-to-Noise Ratio (SNR) for BPSK, QPSK, and QAM constellations.
Annealing temperature — glass type ↔ strain point ↔ anneal point
Calculate strain point, anneal point, and custom cooling schedules based on glass type and thickness to prevent stress fractures.
Equatorial Coordinates Converter
Convert Right Ascension (RA) and Declination (Dec) to Hour Angle and Alt-Azimuth coordinates.
Pipe Flow Rate Calculator
Calculate water flow rate, velocity, and capacity under gravity or pressurized nozzle flow.
Legal Billable Hours Estimator
Convert word count of legal drafting documents to estimated billable hours based on complexity and billing rates.
Ore Grade & Concentration Converter
Convert mineral grade concentrations between grams per ton (g/t), weight percentage (%), troy ounces per ton (oz/st), and ppm.
Soil Bearing Capacity Converter
Convert soil bearing capacities between Kilopascals (kPa), Tons per Square Foot (tsf), Pounds per Square Foot (psf), and kg/cm² with typical soil range guides.
Karat purity (Karat ↔ Fineness ↔ % gold)
Convert gold purity levels between Karat values, parts-per-thousand millesimal fineness, and pure gold percentage.
Watch case size — mm diameter ↔ lug width
Analyze watch case diameter proportions, lug-to-lug spans, and find the corresponding standard strap lug-width sizes.
Ballistic coefficient ↔ drag — projectile performance
Calculate bullet Sectional Density (SD) and Ballistic Coefficient (BC) using projectile weight, caliber, and form factor.
Bullet drop — distance ↔ inches ↔ cm at given range
Estimate bullet drop trajectories over distance based on muzzle velocity, projectile mass, and gravitational pull.
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
Conveyor speed (belt speed ↔ parts per minute)
Calculate conveyor belt linear velocity from pulley diameter and RPM, and estimate throughput in parts per minute based on spacing.
Pump Efficiency Calculator
Calculate pump efficiency and hydraulic power based on volumetric flow rate, head height, fluid density, and input shaft power.
Water resistance — ATM ↔ bar ↔ meters depth rating
Convert water pressure tolerances across ATM, Bar, and depth meters. Understand safe real-world water sport activities.
Zipper Length & Size Converter
Convert zipper lengths between centimeters and inches, and explore standard zipper gauge size applications.
Safety glass thickness ↔ impact resistance rating
Calculate safety glass thickness requirements and impact resistance (Tempered vs. Laminated).
Soil Plasticity Index Calculator
Calculate Plasticity Index (PI) from Liquid Limit (LL) and Plastic Limit (PL), and interpret soil state using the Atterberg limits chart.