Grit Progression & MicronsLapidary Guild
Convert diamond mesh sizes to exact micron scratch depth tolerances and align grit progression steps for scratchless polishing.
Softer stones yield deeper scratches at equivalent grits.
Lubricant Match:
Use Water (Continuous). Consistent surface lubrication flushes ground stone micro-fragments to prevent lap loading and deep wild scratches.
Explore Additional Utilities
Tsunami wave speed — ocean depth ↔ km/h
Predict shallow water tsunami wave propagation speed from ocean depth parameters.
Encoder resolution (PPR ↔ degrees per pulse)
Convert between encoder Pulses Per Revolution (PPR), Cycles Per Revolution (CPR), and angular resolution down to arcseconds.
Tablet Splitting & Cost Calculator
Calculate tablet splitting doses, available whole/half combinations, cost savings, and review critical pill splitting safety guidelines.
Body Surface Area (BSA) Calculator
Calculate body surface area (BSA) for clinical dosing using Mosteller, DuBois, Haycock, and Gehan-George formulas.
Recycling Weight & Resource Savings Calculator
Convert quantities of recycled materials (plastic, glass, paper, aluminum) into greenhouse gases, water, and landfill space saved.
Soil Permeability Converter
Convert coefficient of permeability (hydraulic conductivity) between cm/s, m/day, ft/day, and m/s with soil type drainage classifications.
Earthquake Magnitude (Richter ↔ Moment)
Convert and compare earthquake energy release, shaking amplitude, and felt effects between Richter (ML) and Moment Magnitude (Mw) scales.
Species-Specific Drug Dosing
Calculate animal weight-based dosages, target mg requirements, and liquid volumes across different species: dogs, cats, horses, cattle, and rabbits.
Wave height ↔ wave period — sea state description
Assess Significant Wave Height, period, WMO sea states, wave wavelength, celerity speed, and steepness limits.
Carat weight ↔ grams
Convert between diamond or gemstone carats, metric grams, grains, and points of gem weight.
Water resistance — ATM ↔ bar ↔ meters depth rating
Convert water pressure tolerances across ATM, Bar, and depth meters. Understand safe real-world water sport activities.
Pipe thread standard — NPT ↔ BSP ↔ metric
Compare dimensions, angles, thread pitches, and sealing mechanics of NPT, BSPP, BSPT, and Metric thread systems.
Crown position ↔ function — hand setting vs winding
Map out the mechanical state and winding functions of crowns at positions 0, 1, and 2, including quickset dates and hacking.
Coordinates to UTM/MGRS
Convert standard Latitude & Longitude decimal coordinates to UTM and military grid reference (MGRS) systems.
Sugar Syrup Ratio Calculator
Calculate water and sugar ratios for simple, rich, and Demerara syrups by volume and weight.
Elastic Stretch Ratio Calculator
Calculate the stretch percentage and relaxed vs. stretched lengths of elastics or stretch fabrics.
Prism Power Converter
Convert ophthalmic prism power between prism diopters (PD) and degrees of deviation, with light bending estimations.
One Rep Max (1RM) Calculator
Estimate your single repetition maximum lifting capacity (1RM) using major clinical lifting models (Epley, Brzycki, Lander).
Scale factor (model size ↔ real world)
Convert dimensions between model design sizes and physical real-world scale targets, including imperial/metric conversions.
Weight Converter
Convert between kilogram, gram, pound, ounce, stone, and other mass units.