Other Calculators
Date and Time
- Age Calculator — exact age in years, months, and days
- Date Calculator — add or subtract days, weeks, months, or years
- Time Calculator — add or subtract hours, minutes, or seconds
- Hours Calculator — decimal hours and H:MM conversion
- Time Card Calculator — sum shift hours with break deductions
- Time Zone Calculator — convert times between world zones
- Time Duration Calculator — elapsed time between two date-time points
- Day Counter — count days between two dates
- Day of the Week Calculator — weekday name for any calendar date
Entertainment/Anecdotes
- Dice Roller — roll polyhedral dice with sum
- Love Calculator — playful name compatibility percentage
Housing/Building
- Concrete Calculator — cubic yards and bag count for slabs
- BTU Calculator — rough heating and cooling BTU estimates
- Square Footage Calculator — floor area for common shapes
- Stair Calculator — risers, treads, run, and stringer length
- Roofing Calculator — roof squares and shingle bundles
- Tile Calculator — tiles and boxes for a floor
- Mulch Calculator — mulch volume and bag count
- Gravel Calculator — gravel cubic yards and tons
Various Measurements/Units
- Height Calculator — predict child's height and convert units
- Conversion Calculator — comprehensive unit conversions
- GDP Calculator — calculate GDP using expenditure approach
- Density Calculator — solve for density, mass, or volume
- Mass Calculator — convert mass or solve f=ma
- Weight Converter — convert between different weight units
- Speed Calculator — solve for speed, distance, or time
- Molarity Calculator — solve for molarity, mass, or volume
- Molecular Weight Calculator — molar mass from chemical formula
- Roman Numeral Converter — convert to and from roman numerals
Electronics/Circuits
- Voltage Drop Calculator — calculate voltage drop across a wire
- Resistor Calculator — find resistance from color bands
- Ohm's Law Calculator — calculate voltage, current, resistance, or power
- Electricity Calculator — calculate electricity usage and cost
Internet / Networking
- IP Subnet Calculator — calculate subnet details for IPv4 and IPv6
- Password Generator — generate strong random passwords
- Bandwidth Calculator — calculate download/upload times
- Base64 Encode / Decode — encode and decode Base64 strings
- URL Encode / Decode — encode and decode URL strings
Everyday Utility
- Bra Size Calculator — estimate bra size using measurements
- Shoe Size Conversion — convert shoe sizes internationally
- Tip Calculator — calculate tip and split the bill
- Golf Handicap Calculator — calculate your golf handicap index
- Sleep Calculator — find the best times to sleep or wake up
Transportation
- Fuel Cost Calculator — calculate fuel cost for a trip
- Gas Mileage Calculator — calculate vehicle gas mileage
- Horsepower Calculator — estimate hp from 1/4 mile performance
- Engine Horsepower Calculator — calculate engine hp using torque and rpm
- Mileage Calculator — calculate total fuel used and mileage
- Tire Size Calculator — compare dimensions of two tire sizes