Chemical Solutions Concentration
Convert chemical solutions concentration (Molarity ↔ Molality ↔ PPM) and analyze mass ratios.
Explore Additional Utilities
Stone size ↔ carat estimator
Estimate carat weight of round, oval, emerald, pear, or marquise cut gemstones from their physical dimensions and specific gravity.
Speech Rate (WPM ↔ Pages)
Calculate presentation speech times, audio length, and page count equivalents using custom words per minute (WPM).
Thread count ↔ fabric quality rating
Calculate and convert cotton single-ply thread counts to analyze and rate fabric quality and softness.
Sample size calculator — confidence level ↔ margin of error
Determine required sample sizes for research surveys or experiments based on population size, confidence levels, and target margin of error.
Script Character ↔ Word Counter
Analyze characters, spaces, punctuation, words, and word density. Convert text density predictions between CJK and Latin scripts.
Currency Converter
Convert global currencies using simulated or fetched live rates (USD, EUR, GBP, JPY, etc.).
Enthalpy ↔ temperature ↔ pressure — steam tables
Estimate saturated water and steam properties including boiling point, saturated pressure, and enthalpies.
Fuel Efficiency Converter
Convert between miles per gallon (mpg), liters per 100km (L/105km), and km/liter conversions.
Period Tracker & Predictor
Track menstrual cycles, predict future period start dates, cycle phases, and typical symptom occurrences.
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.
Block count — wall area ↔ number of blocks needed
Calculate standard concrete masonry units (CMU) or clay bricks required for a wall, adjusting for joint widths and waste factors.
Acoustic Decibel Ratio
Formulate sound logarithmic decibel power ratios and acoustic pressure variations.
Roman Numeral Converter
Convert between classical Roman numerals (XIV, MCMLXX) and decimal integers dynamically.
Data Storage Units
Convert digital storage capacity sizes across bits, Bytes, MB, GB, and Terabytes.
Sandpaper grit — CAMI ↔ FEPA ↔ micron rating
Convert and compare sandpaper abrasive grit sizing standards between CAMI, FEPA (P-grade), and average micron rating.
Shoe Size Converter
Convert footwear sizes across US, UK, Europe, and Japanese standards for men and women.
Heat Index Feels-Like
Assess felt air heat indexes using ambient temperature and relative humidity thresholds.
Shrinkage allowance — finished size ↔ cut size
Calculate required pattern cut sizes from finished garment specs or expected post-wash sizes.
Premium Rate ↔ Sum Insured
Calculate basic insurance premium rates, loading factors, and sum insured relationships (percentage, permille, and absolute values).
Pregnancy Due Date & Milestones
Calculate estimated due date (EDD), gestational age, fetal development sizes, and trimester milestones.