Speech Rate (WPM ↔ Pages)
Model speech durations for scripts, configure average speed profiles, and preview with a live teleprompter.
Explore Additional Utilities
Telescope resolution — aperture ↔ arcsecond limit
Determine telescope diffraction limits (Dawes' Limit/Rayleigh Criterion) and light gathering power.
Flash Guide Number Calculator
Solve the photography flash equation to find guide numbers, aperture, subject distance, or ISO speed for perfect manual flash exposures.
International Hat Size Matcher
Convert hat dimensions across US, UK, and European standards.
Numerical aperture ↔ acceptance angle — fiber coupling
Determine light coupling capabilities, supported modes, V-numbers, and acceptance cone widths for optical optical fibers.
Cooking Unit Converter
Convert kitchen recipe volume structures: cups, milliliters, tablespoons, teaspoons, and fluid ounces.
URL Slug Generator
Generate clean, hyphenated, SEO-friendly slugs from any string with custom separators.
Base64 Encoder
Encode textual strings to Base64 format, or decode Base64 back to raw text.
Scientific Temperature Scale
Convert scientific scales between Celsius, Fahrenheit, Kelvin, and Rankine thermal indicators.
Text Case Converter
Swiftly switch text between UPPERCASE, lowercase, camelCase, snake_case, or Title Case.
IQ score ↔ percentile rank
Map IQ scores (with standard deviations 15 or 16) to cognitive percentile ranks, rarity indices, and standard intelligence brackets.
Supersonic Mach Speed
Assess sonic speed boundaries and atmospheric Mach velocities relative to local dry conditions.
Torque Converter
Convert rotating force indicators between Newton-meters (Nm), pound-feet (lb-ft), and kgf·m.
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.
Nautical Distance & Speed Sizer
Convert distances between nautical miles, statute miles, and kilometers, and calculate knot-based speeds.
Data Storage Units
Convert digital storage capacity sizes across bits, Bytes, MB, GB, and Terabytes.
Drug Half-Life & Scheduling
Model drug half-life elimination, dosing accumulation ratios, times to steady-state, and clearance curves with interactive charts.
Lumens & Bulb Wattage Equivalence
Compare light outputs in lumens with electrical consumption in bulb watts.
Flesch-Kincaid Reading Level
Calculate readability scores and Flesch-Kincaid school grade levels for any input text in real-time.
Water Footprint & Virtual Water Calculator
Estimate virtual water consumption based on diet choices, household activities, and direct/indirect product footprints.
Audio Dynamic Range Calculator
Estimate dynamic range in decibels (dB) and quantization levels for any bit depth.