Cosmic Distance Converter
Convert vast interstellar distances between Light Years, Parsecs, Astronomical Units, and Kilometers.
Takes 1 years to traverse
1 parsec (pc) equals roughly 3.26 light years, or 206,265 Astronomical Units.
1 AU is 149.6 million kilometers (the Sun is 8.3 light-minutes away).
The cosmic horizon is approximately 46.5 billion light-years in radius due to inflation expansion.
Explore Additional Utilities
Shoe Size Converter
Convert footwear sizes across US, UK, Europe, and Japanese standards for men and women.
Foreign Exchange Cross Rates
Compare conversion values and custom exchange indicators across popular global currencies.
Julian ↔ Gregorian Calendar
Convert between Julian Dates (JD, MJD) and standard Gregorian calendar dates with day of the year and century metrics.
Fragrance load — wax weight ↔ % ↔ grams of scent
Calculate fragrance oil weight based on wax weight and target fragrance load percentage.
Buoyancy — weight needed ↔ wetsuit thickness + water type
Determine required lead weight adjustments based on wetsuit thickness, water density (salt vs. fresh), and diver body metrics.
Yarn Weight Converter
Convert yarn sizes across WPI (Wraps Per Inch), ply, and standard weight categories.
Swimming Pace & Yardage Converter
Convert swim splits and paces between per-100m, per-100 yards, and overall distances with custom pool sizes.
Pipe Flow Rate Calculator
Calculate water flow rate, velocity, and capacity under gravity or pressurized nozzle flow.
Drug Half-Life & Scheduling
Model drug half-life elimination, dosing accumulation ratios, times to steady-state, and clearance curves with interactive charts.
Button Size Converter
Convert button measurements between traditional ligne (L), millimeters, and fractional inches.
Translation Pages & Pricing Converter
Convert document page count to word and character counts, and calculate translation pricing for multiple languages and target audiences.
Depth ↔ Geostatic & Hydrostatic Pressure
Determine lithostatic (rock overburden) and hydrostatic (fluid) pressure at custom geological underground depths or deep underwater.
Diopter ↔ Focal Length Converter
Convert between lens diopters and focal length in meters, millimeters, or inches, and calculate eyeglass lens power requirements.
Thread Weight Converter
Convert between different thread sizing standards including Tex, Denier, and Number English (Ne).
Animal Feed & Dry Matter Calculator
Convert animal body weight percentage dry matter intake (DMI) to daily feed requirements in kg/lbs, based on feed dry matter ratio and species presets.
Blood Glucose Converter
Convert blood glucose levels between mmol/L and mg/dL, with diabetic range assessments and HbA1c approximations.
Bra Size Converter
Convert bra band and cup sizes across US, UK, EU, and French sizing standards with precise measurements.
Carbon Footprint Calculator
Convert between distance driven (km or miles) and greenhouse gas emissions (kg CO2) across various vehicle fuel types and efficiencies.
Troy ounce ↔ gram ↔ pennyweight
Convert weights of precious metals like gold, silver, and platinum between Troy ounces, grams, and pennyweight (dwt).
Infill density (% ↔ structural strength)
Estimate mechanical tensile strength and relative part weight based on infill percentage, material choice, and shell count.