Other Calculators

Predict child adult height using the clinical Khamis-Roche mid-parental method, or convert height between feet, inches, centimeters, and meters.

Calculate your accurate bra size using snug underbust and fullest bust measurements. Includes US, UK, and European size conversions and sister sizes.

Calculate total elapsed work hours, minutes, unpaid lunch breaks, and gross earnings for daily timesheets and payroll records.

Calculate restaurant tips, split the bill evenly per person, and view total checks with tip.

Calculate your exact chronological age in years, months, weeks, days, hours, and minutes from date of birth.

Calculate cubic yards and bags of concrete needed for slabs, footings, and columns with custom waste buffer.

Calculate IPv4 subnets, network address, broadcast address, subnet mask, and usable host IP ranges.

Calculate trip fuel costs, gallons required, and cost per passenger based on distance, MPG, and gas price.

Calculate your weighted and unweighted cumulative GPA based on course letter grades and credit hours.

Calculate average vehicle speed, distance covered, or travel time in mph, km/h, knots, and meters per second.

Calculate total floor and wall tiles needed, room square footage, cutting waste allowance, and box quantities.

Calculate square footage and material carton counts for hardwood, laminate, or luxury vinyl tile (LVT) flooring.

Calculate roof surface area, roofing squares, bundles of asphalt shingles, and pitch multiplier adjustments.

Calculate shingles, squares, and roof area for residential roofing projects.

Calculate cubic yards, cubic feet, and 2-cu-ft bags of landscape mulch needed for garden beds.

Calculate tons and cubic yards of gravel, crushed stone, or pea gravel for driveways, patios, and drainage.

Calculate tons and cubic yards of sand needed for pavers, sandboxes, pools, and masonry work.

Calculate number of standard modular bricks, square footage, waste buffer, and mortar bags needed for masonry walls and walkways.

Calculate electrical power (Watts), voltage (Volts), current (Amperes), and resistance (Ohms) using Ohm’s Law and Joule’s Law.

Calculate material density, mass, or volume across metric and imperial units (g/cm³, kg/m³, lbs/ft³).

Calculate mechanical force in Newtons (N) or pounds-force (lbf) using Newton’s second law of motion: F = m × a.

Calculate pressure across Pascals (Pa), PSI, atmospheres (atm), and bar from force and contact area.

Calculate mechanical or electrical power across Watts, Kilowatts, and Horsepower from work performed and elapsed time.

Calculate kinetic energy (0.5 * m * v²) and gravitational potential energy (m * g * h) across Joules, calories, and kWh.

Calculate rotational torque in Newton-meters (Nm) or pound-feet (lb-ft) based on force, lever arm length, and applied angle.

Calculate atmospheric dew point from ambient air temperature and relative humidity using the Magnus-Tetens formula.

Calculate winter perceived cold temperature and frostbite exposure risk based on ambient temperature and wind speed.

Calculate the summer Heat Index ("feels like" temperature) and heat illness danger level from air temperature and relative humidity.

Convert shoe sizes between US Men’s, US Women’s, UK, European (EU), Japanese (JP), and foot length in inches and centimeters.

Convert international shoe sizes between US, UK, European, and Japanese foot measurements.

Calculate vehicle fuel economy in Miles Per Gallon (MPG) or Liters per 100km (L/100km) based on odometer trip distance and gas tank fill-up volume.

Calculate standard IRS tax deductions and employee reimbursements for business, medical, moving, and charitable driving.

Roll virtual tabletop RPG dice with modifiers for Dungeons & Dragons (D&D), Pathfinder, and board games.

Generate high-entropy, cryptographically secure passwords with custom lengths, symbols, numbers, and uppercase characters.

Calculate your current overall class grade and determine the exact score needed on your final exam to pass or earn an A.

Fun romantic compatibility algorithm based on numerology letter vibrations and name harmonic resonance.

Compare tire diameters, sidewall heights, circumference, and speedometer speed variance when changing wheel and tire sizes.

Convert measurements across length, weight, volume, temperature, speed, area, and digital data storage.

Convert annual salary into equivalent hourly, daily, weekly, bi-weekly, and monthly gross wages.

Add or subtract elapsed time durations across days, hours, minutes, and seconds.

Calculate the exact duration, elapsed hours, minutes, and seconds between two clock times or dates.

Calculate days between two dates or add/subtract business days, weeks, months, or years from any calendar date.

Count the exact number of calendar days, business weekdays (Monday through Friday), and weekends between two dates.

Find out what day of the week (Monday through Sunday) you were born on or any past or future historical date.

Convert local time across worldwide time zones with UTC offset differences and Daylight Saving Time (DST) rules.

Convert 12-hour AM/PM standard clock time to 24-hour military time, with NATO phonetic pronunciations and military time charts.

Convert decimal hours (e.g. 7.75 hours) into hours, minutes, and seconds for timesheet payroll and scheduling.

Add and subtract time durations formatted in hours and minutes with base-60 sexagesimal handling.

Convert total minutes (e.g. 275 minutes) into hours, remaining minutes, and decimal hours.

Estimate reading duration in minutes and hours based on total word count and reading speed in words per minute (WPM).

Calculate exact chronological age in years, months, and days for psychological assessments, medical records, and school grade placement.

Convert standard integers (1 to 3,999) to Roman numerals and parse Roman numerals into Arabic decimal numbers with full subtraction rules.

Translate Roman numerals to Arabic numbers and vice versa.

Convert base-2 binary strings into base-10 decimal integers, hexadecimal, and octal with step-by-step place value math.

Convert base-16 hexadecimal characters (0-9, A-F) into base-10 decimal numbers and base-2 binary bits.

Comprehensive CIDR prefix, wildcard mask, binary network boundary, and broadcast address solver for network engineers.

Calculate download and upload transfer times for files based on connection bandwidth speed in Mbps, Gbps, or MB/s.

Decode 4-band and 5-band resistor color codes to calculate nominal resistance, tolerance percentage, and resistance range in Ohms.

Solve electrical circuits using Ohm’s law circle: calculate any two values from Voltage (V), Current (I), Resistance (R), and Power (P).

Calculate voltage drop, percentage loss, and end-of-run voltage across copper and aluminum conductors according to the National Electrical Code (NEC).

Calculate square footage (sq ft), square yards, and square meters for rooms, homes, landscaping, and construction projects.

Calculate required British Thermal Units (BTU/hr) and AC cooling tonnage based on room dimensions, ceiling height, insulation, and sun exposure.

Calculate staircase dimensions, number of risers, tread depth, stringer length, and incline angle matching International Building Code (IBC).

Calculate solution molarity (M in mol/L), mass of solute (grams), and volume using solute molar mass.

Calculate the molar mass (molecular weight in g/mol) and mass percentage elemental composition from chemical formulas (e.g. H2O, C6H12O6, NaCl).

Calculate engine horsepower from torque (lb-ft) and RPM, or estimate vehicle horsepower from quarter-mile elapsed time and trap speed.

Calculate engine cubic inch displacement (CID), cubic centimeters (cc), liters, and potential naturally aspirated horsepower from cylinder bore and stroke.

Calculate weekly timesheet hours, lunch break deductions, regular hours, overtime hours (1.5x), and gross paycheck earnings.

Encode plain text and binary strings into ASCII Base64 format, or decode Base64 data into readable UTF-8 text.

Encode special characters into percent-encoded (%XX) format or decode percent-encoded URLs into clean human-readable query strings.

Convert mass across kilograms, grams, milligrams, pounds (lbs), ounces (oz), stones, and metric tons.

Convert body weight and item weights across pounds, kilograms, stones, and ounces.