Calculator library

Free Work Calculators

Choose the calculation you need: a timecard, pay estimate, shift calendar, PTO balance or staffing plan. Enter your figures, check the assumptions and use the worked example to verify the result.

Browse calculators

Hours & timesheets

Explore hours & timesheets guides →

Pay & payroll

Explore pay & payroll guides →

Shift schedules

Explore shift schedules guides →

PTO & leave

Explore pto & leave guides →

Staffing & FTE

Explore staffing & fte guides →

Choose the right starting point

Use work hours for actual clock records, decimal hours for an existing duration column, and monthly or annual work hours for planned calendar capacity. These are different inputs, even when all three results are expressed in hours.

For explanations and spreadsheet formulas, browse the work hours, shift and payroll guides. Pay and leave calculations model the assumptions you enter; they do not establish entitlement or replace your employer’s rules.