Other Calculators

Calculate exact age in years, months, and days, plus total time elapsed and time until the next birthday.

Count weekdays and business days between dates, with inclusive counting and optional holiday adjustment.

Estimate concrete volume in cubic yards, cubic metres, and bags for slabs, round columns, and square columns in imperial or metric units.

Measure the time between two dates in years, months, weeks, days, and business days.

Calculate trip fuel cost, total fuel used, and cost per mile or kilometre for one-way or round trips in imperial or metric units.

Estimate weighted and unweighted GPA from course grades and credits, and compare results across classes or terms.

Track weighted coursework, estimate your current average, and calculate the score needed to reach a target grade.

Break down any IPv4 address and prefix into network address, broadcast, host range, subnet mask, wildcard mask, and usable host count.

Generate secure random passwords with custom length, character types, and ambiguous character exclusion, with live entropy and strength feedback.

Plan bedtimes or wake-up times around 90-minute sleep cycles with easy-to-read nighttime options.

Work out tip amount, final bill, tax, and per-person share for restaurant checks and split bills.