Seismology & Earthquakes
Seismological Settings
In deep oceans, tsunamis travel at jet-liner speeds but with tiny amplitudes. As they approach shallow shorelines, they slow down and build massive wave heights (shoaling effect).
Explore Additional Utilities
AWG Cable Sizer
Convert American Wire Gauge (AWG) sizes to metric dimensions, and estimate current carrying capacity.
Bullet drop — distance ↔ inches ↔ cm at given range
Estimate bullet drop trajectories over distance based on muzzle velocity, projectile mass, and gravitational pull.
Explosive charge weight — rock volume ↔ kg of explosive
Estimate required explosives (kg, lbs) for blasting a rock volume using powder factor models for open-pit mining.
Envelope size — letter size ↔ envelope dimensions needed
Match standard paper formats and fold styles to commercial envelope dimensions with proper clearance parameters.
Fuel Efficiency Converter
Convert between miles per gallon (mpg), liters per 100km (L/105km), and km/liter conversions.
Heat Index Feels-Like
Assess felt air heat indexes using ambient temperature and relative humidity thresholds.
Canopy size — jumper weight ↔ wing loading
Calculate wing loading (lbs/sq ft) and find recommended parachute canopy sizes based on total jumper exit weight.
Flesch-Kincaid Reading Level
Calculate readability scores and Flesch-Kincaid school grade levels for any input text in real-time.
Brick Count Estimator
Calculate bricks, mortar volume, sand, and cement needed for masonry walls.
Reverberation Time (RT60) Calculator
Estimate room RT60 reverberation times using Sabine and Eyring formulas, room volume, and surface absorption coefficients.
Screw gauge ↔ mm diameter — imperial vs metric screws
Cross-reference standard wood screw gauges with thread diameter in millimeters and inches for pre-drilling and pilot holes.
Compression ratio — bore + stroke + head volume
Calculate static compression ratios from cylinder bore, stroke, head chamber volume, gasket thickness, deck clearance, and dome/dish specs.
Fabric Width Yardage Converter
Convert fabric yardage requirements between different standard widths like 44 inches and 60 inches.
Radioactive Decay Half-Life
Estimate remaining isotope amounts and decay timelines from standard half-life periods.
Braille Translator (Grade 1)
Convert standard text into visual Grade 1 Braille cell dots, and design custom cells using an interactive 6-dot braille builder.
Soil Compaction Ratio Calculator
Calculate and convert soil compaction ratio, loose volume, compacted volume, and shrink/swell factor for cut-and-fill operations.
Translation Pages & Pricing Converter
Convert document page count to word and character counts, and calculate translation pricing for multiple languages and target audiences.
Hallmark converter (UK date letters ↔ year)
Decode historic and modern UK silver, gold, and platinum hallmarks, converting assay office date letters to exact production years.
Cloud Base Height Estimator
Estimate cloud condensation levels and cloud base height based on temperature and dewpoint spreads.
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.