3D Printing & CAD Calculator
Standardized mechanics and slicing calculations for filament volumes, layer speeds, material infill, bed boundaries, and precision ISO tolerancing fits.
1. Input Model CAD Dimensions
2. Target Fit Results & Bed Boundary Check
Increasing size to 100% results in a 1.000x increase in total physical volume (filament weight and print time are cubic!).
Explore Additional Utilities
Endpaper size — book block dimensions ↔ sheet size
Determine correct paper grain directions and cut layout dimensions of endpapers relative to parent sheet paper sizes.
Carat weight ↔ grams
Convert between diamond or gemstone carats, metric grams, grains, and points of gem weight.
Saponification value — oil type ↔ lye required per gram
Look up sap values for standard oils and calculate custom lye weights.
USCS Soil Classification Solver
Classify soil type under the Unified Soil Classification System (USCS) using sieve analysis and Atterberg limits.
Equatorial Coordinates Converter
Convert Right Ascension (RA) and Declination (Dec) to Hour Angle and Alt-Azimuth coordinates.
Mohs Hardness & Scratch Resistance
Compare minerals, absolute hardness values, and scratch interactions using the classic 1-10 Mohs scale and Knoop indentation hardness.
Water resistance — ATM ↔ bar ↔ meters depth rating
Convert water pressure tolerances across ATM, Bar, and depth meters. Understand safe real-world water sport activities.
Legal Billable Hours Estimator
Convert word count of legal drafting documents to estimated billable hours based on complexity and billing rates.
Depth ↔ Geostatic & Hydrostatic Pressure
Determine lithostatic (rock overburden) and hydrostatic (fluid) pressure at custom geological underground depths or deep underwater.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.
Luminous Efficacy Calculator
Calculate and compare the luminous efficacy (lumens per watt) of various lighting technologies, with detailed efficiency and rating analysis.
Tablet Splitting & Cost Calculator
Calculate tablet splitting doses, available whole/half combinations, cost savings, and review critical pill splitting safety guidelines.
Canopy size — jumper weight ↔ wing loading
Calculate wing loading (lbs/sq ft) and find recommended parachute canopy sizes based on total jumper exit weight.
Etching time — acid strength ↔ plate depth ↔ minutes
Estimate intaglio plate etching durations in nitric acid or ferric chloride based on metal type and Baumé strength.
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).
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Fiber preparation — raw fleece weight ↔ washed clean yield
Estimate washed clean fiber yield, grease/lanolin loss weight, and clean weight from raw animal fleeces by breed.
EC ↔ ppm ↔ TDS — nutrient solution strength
Convert liquid nutrient electrical conductivity (EC) to parts per million (PPM) under Truncheon, 500 (TDS), or 700 (Hanna) scales.
Sidereal Time Converter
Convert between standard Solar Time and Sidereal Time based on your longitude.