Leather Weight & ThicknessTanner Guild
Convert leather weights in ounces (oz) to exact millimeter (mm) or fractional inch thickness. View target usage categories.
Note: 1 ounce of leather weight is equal to approximately 1/64 inch (0.4 mm) thickness.
Industry Thickness Class Guidelines
Explore Additional Utilities
Visibility — Secchi depth ↔ water clarity rating
Estimate underwater horizontal visibility and water quality indices using standard Secchi disk depth readings.
Water discount — full water ↔ reduced water ratio
Optimize water discount levels and water-to-lye concentration ratios to speed up soap curing.
Half Value Layer (Shielding)
Calculate radiation intensity reduction through shielding materials (lead, steel, concrete, water) using half-value thickness and attenuation.
Telescope Magnification Calculator
Calculate telescope magnification, exit pupil, and resolving limit from focal lengths and aperture.
Blood Glucose Converter
Convert blood glucose levels between mmol/L and mg/dL, with diabetic range assessments and HbA1c approximations.
Pace, Speed & Time Converter
Convert between different running paces and speeds (min/km, min/mile, km/h, mph) and predict race times.
Cosmic Distance Converter
Convert huge distances across Light Years, Parsecs, Astronomical Units, and Kilometers.
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.
Drug Concentration Converter
Convert pharmaceutical concentrations between % w/v, mg/mL, and mol/L using substance molecular weight presets.
Yarn Weight Converter
Convert yarn sizes across WPI (Wraps Per Inch), ply, and standard weight categories.
Fold ratio — paper thickness ↔ maximum folds possible
Compute theoretical limit of fold iterations possible for paper size and thickness (Britney Gallivan equation).
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Frequency ↔ Wavelength (Sound)
Convert between sound frequency and wavelength in air or water, considering temperature and medium sound speed variations.
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.
Pediatric Dosing Calculator
Estimate pediatric dosages from adult recommendations using standard pediatric clinical rules: Clark's, Young's, Webster's, Fried's, and BSA methods.
Denim Weight Converter
Convert denim fabric weight between ounces per square yard (oz/yd²) and grams per square meter (gsm) with fabric weight classifications.
Color Temperature Converter
Convert between color temperature in Kelvin and Mired units, with descriptive lighting labels and photographic application guides.
Flow Rate Converter
Convert volumetric flow rates between cubic meters per second (m³/s), liters per minute (L/min), gallons per minute (GPM), and other flow units.
Safety glass thickness ↔ impact resistance rating
Calculate safety glass thickness requirements and impact resistance (Tempered vs. Laminated).