All Formulas
Explore formula guides that explain the equations, variables, and assumptions behind each calculator.
465 Formulas
Supporting formulas across every calculator category.
A/B Testing Website Load Time FormulaLearn how website load-time differences and observed conversion rates are used to estimate a faster variant's pr...View formula→A/B Testing Website Load Time FormulaLearn how to calculate per-page load-time improvement and total monthly visitor waiting time saved when variant...View formula→A/B Testing Website Load Time Per-User FormulaLearn how to calculate per-user load-time savings, percentage change, traffic-weighted test load time, and cumul...View formula→Absence Rate FormulaLearn how to calculate an employee absence rate from absence days, average headcount and scheduled working days.View formula→Team Absence Rate and Turnover FormulaLearn how to calculate team absence rate, employee turnover rate, scheduled workdays, and attendance days for on...View formula→Absence Rate FormulaLearn how to calculate employee absence and attendance rates from scheduled workdays and recorded absence days.View formula→Individual Attendance Rate FormulaLearn how scheduled days and absence days are used to calculate an individual's attendance percentage, absence r...View formula→Team Absence Rate FormulaLearn how to calculate a team's absence rate, attendance rate, equivalent absence days, and attended hours from...View formula→Annual Absence Budget FormulaLearn how an annual absence budget is estimated from payroll, employer on-costs, expected absence, and replaceme...View formula→Absence Rates Budget FormulaLearn how to estimate annual employee absence days, lost-time cost, and a paid-cover budget.View formula→Individual Absence Rate Budget FormulaLearn how to calculate an annual absence-day budget, remaining days, current absence rate, and projected year-en...View formula→Team Absence Budget FormulaLearn how to calculate a team's annual absence-day allowance, estimated absence cost, and variance from a target...View formula→