Section III · 168 tools
Converters, across
every unit.
Length, weight, temperature, volume, speed — convert any unit to every other unit, simultaneously, rounded to a sensible decimal or its full precision on demand.
168 conversions
Us To Eu Shoe Size Converter Calculator
Instantly convert US shoe sizes to EU and back. Uses EU = US + 33 for men and EU = US + 31 for women. Free, fast, and accurate.
Us To Uk Shoe Size Converter Calculator
Convert shoe sizes between US and UK systems for men and women, in either direction, using standard offset formulas.
Uk To Us Shoe Size Converter Calculator
Free UK to US shoe size converter for men, women, and kids. Uses the standard +1 offset for men's and +2 for women's sizing.
Hours And Minutes To Decimal Hours Converter Calculator
Convert hours, minutes, and seconds to decimal hours using D = H + M/60 + S/3600. Perfect for payroll, billing, and time tracking.
Time To Hours Converter Calculator
Convert seconds, minutes, days, weeks, or months to hours instantly using the formula H = V x F.
Upside Down Text Generator Calculator
Flip text 180° using Unicode IPA glyph mapping. Estimate character coverage by transformation mode and copy your inverted result in one click.
Eu To Us Shoe Size Converter Calculator
Convert European (EU) shoe sizes to US men's sizes and back using a linear regression formula. Fast, accurate EU US shoe size converter.
Decimal Time Conversion Calculator
Convert between decimal hours and HH:MM:SS using T = H + M/60 + S/3600. Supports standard-to-decimal and decimal-to-standard conversions instantly.
Time To Decimal Calculator
Convert hours, minutes, and seconds to decimal hours, minutes, or seconds instantly. Ideal for payroll, billing, project tracking, and time-sheet calculations.
Nato Phonetic Alphabet Calculator
Convert letters and digits to NATO phonetic alphabet code words and calculate word length or syllable count instantly.
Pig Latin Translator Calculator
Translate English words into Pig Latin instantly. Choose Classic, Modern, or Alternative style with this free pig latin translator converter.
Wizarding Currency Converter (Galleons, Sickles, Knuts) Calculator
Convert between Galleons, Sickles, and Knuts using official Harry Potter exchange rates: 1 Galleon = 17 Sickles = 493 Knuts.
Lumens To Watts Calculator
Calculate watts from lumens using luminous efficacy. Select LED, CFL, incandescent, or custom bulb type to convert lumens to watts accurately.
Shoe Size Conversion Calculator
Convert shoe sizes between US Men's, US Women's, UK, EU, and centimeter systems using standard offset formulas and ISO Mondopoint measurements.
Nautical Mile Converter Calculator
Convert nautical miles to kilometers, statute miles, feet, and meters. Accurate conversions for aviation, sailing, and maritime navigation.
Decimal To Percent Converter Calculator
Convert decimals to percentages instantly using P = D x 100. Enter any decimal value to get its exact percent equivalent in one step.
Spherical Coordinates Calculator
Convert between Cartesian (x, y, z) and spherical (ρ, θ, φ) coordinates using standard math/ISO formulas. Supports degrees and radians.
Cartesian To Polar Coordinate Converter Calculator
Convert (x, y) Cartesian coordinates to polar (r, θ) using r = √(x²+y²) and θ = atan2(y, x). Instant results in degrees or radians.
Standard Form To Slope Intercept Form Calculator
Convert standard form equations (Ax + By = C) to slope-intercept form (y = mx + b) by instantly computing slope m = -A/B and y-intercept b = C/B.
Fraction To Percentage Converter Calculator
Convert any fraction to a percentage using P=(N÷D)×100. Enter a numerator and denominator to get an instant, precise percentage result.
Ecg Boxes To Seconds Calculator
Convert ECG grid boxes to seconds by entering box count, box type (small/large), and paper speed (25 or 50 mm/s) for precise interval measurement.
Cholesterol Units Converter (Mg/D L ↔ Mmol/L) Calculator
Convert total, LDL, HDL cholesterol and triglycerides between mg/dL and mmol/L using the correct molar-mass factor for each lipid type.
Binary Fraction Calculator
Convert binary fractions to decimal or decimal numbers to binary fractions with configurable fractional bit precision for non-terminating results.
Complex Number Polar To Rectangular Form Converter Calculator
Convert polar form complex numbers (r∠θ) to rectangular form (a + bi) using a = r·cosθ and b = r·sinθ. Supports degrees and radians.