Free date & business time tools

Hit deadlines, payroll dates, and countdowns—without spreadsheets

Count business days, invoice due dates, notice periods, payroll windows, and days-until milestones. Free calculators with clear rules on every page.

Popular Calculators

Fast starting points for deadlines, notice periods, and date math.

Six professional categories—preview the top tools, then open a category for the full list.

Calculate notice periods, resignation dates, probation windows, employment duration, joining…

Calculate payroll cutoff dates, pay periods, next paydays, payroll calendars, hours totals,…

Calculate invoice due dates, net payment terms, and prorated rent for partial billing periods.

Calculate contract end dates, expiry dates, durations, renewal deadlines, SLA deadlines, and…

Calculate compliance deadlines, audit completion windows, and regulatory filing due dates with…

Count calendar and business days, add or subtract days from a date, calculate date ranges and…

Plain-language references for business days, net terms, and calculator selection.