Interactive QR Code Generator
Generate custom high-resolution vector QR patterns from plaintext coordinates or global web URLs.
Explore Additional Utilities
Fumigation concentration — space volume ↔ gas amount
Calculate target gas fumigant weight/volume based on structure cubic volume, target ppm concentration, and temperature.
Ballistic Mils ↔ Angles
Convert between ballistics mils (NATO, Warsaw, Swedish), degrees, and MOA, with range estimation calculators.
Gelatin & Agar Agar Converter
Convert between gelatin sheets (platinum, gold, silver, bronze), powdered gelatin, and vegan agar agar.
Cheese Yield & Rind Calculator
Estimate the edible cheese yield and rind weight waste for whole wheels and wedges of various cheese types.
Sugar Syrup Ratio Calculator
Calculate water and sugar ratios for simple, rich, and Demerara syrups by volume and weight.
Refrigerant charge — system size ↔ kg of refrigerant
Estimate split system factory and added line set refrigerant charge adjustments using liquid tube diameters.
Glaze specific gravity ↔ pint weight — glaze consistency
Convert glaze liquid specific gravities to US/Imperial pint weights and calculate suspended dry material volumes.
Heat Index Feels-Like
Assess felt air heat indexes using ambient temperature and relative humidity thresholds.
CFM ↔ m³/hour — air flow for ventilation
Convert ventilation air flow rates and reference standard design volumes for common room types and equipment hoods.
Fragrance concentration — EDC ↔ EDT ↔ EDP ↔ parfum %
Calculate fragrance oil and diluent volumes/weights for Eau de Cologne, Toilette, Parfum, and Extrait profiles.
Reproductive Health Tracking Suite
Track menstrual cycles, predict ovulation day, fertile windows, and estimate pregnancy due dates & milestones.
Chlorophyll concentration ↔ water color index
Convert Chlorophyll-a bio-concentrations (mg/m³) to ocean water color classes, Forel-Ule index, and trophic status.
Handicap index ↔ course handicap — golf scoring
Translate USGA/R&A Handicap Index to Course Handicap with slope rating and course rating adjustments.
Dye concentration — owf % ↔ grams per liter
Convert textile dyestuff concentration between on weight of fiber (% owf) and grams per liter (g/L).
Preheat temperature — steel grade + thickness → °C
Estimate preheat temperatures using Carbon Equivalent (CE) chemistry formulas and plate thickness guidelines to prevent hydrogen cracking.
Flow velocity — pipe diameter + flow rate → m/s
Calculate average fluid flow velocity from pipe size or inner diameter and volumetric flow rate values.
Key length ↔ security bits — RSA vs AES equivalence
Compare security levels (bits of security) across symmetric keys, RSA, and Elliptic Curve Cryptography (ECC) based on NIST standards.
Asset Depreciation & Insured Value
Calculate asset depreciation over time based on age, condition, actual cash value (ACV), and salvage values for insurance coverage.
Magnetic Declination
Estimate compass alignment values and offset angles between magnetic north and true north.
Steel grade equivalents — ASTM ↔ EN ↔ JIS standards
Cross-reference standard steel grades across ASTM/AISI, EN/DIN, and JIS systems. Includes chemical composition and key mechanical limits.