Business & Office Calculators
Payroll, pricing, profitability, inventory, billing, project, and office-time calculators for business decisions and everyday work. Every calculation runs locally in your browser and supports the universal theme, sound control, sharing, and saved tools.
Overtime Pay Calculator
Calculate regular pay, overtime pay, bonus, and total gross earnings for one work period.
Open calculator →Gross Pay Calculator
Convert annual salary into gross pay per period and include bonuses, commissions, and allowances.
Open calculator →Employee Total Cost Calculator
Estimate the true annual, monthly, and hourly employer cost of an employee beyond base salary.
Open calculator →Salary Increase Calculator
Calculate a raise by percentage or amount and compare annual, monthly, and per-period salary.
Open calculator →Leave Accrual Calculator
Estimate earned annual leave and remaining leave balance based on entitlement, time worked, carryover, and leave used.
Open calculator →Time Card Calculator
Calculate paid hours and gross pay from clock-in, clock-out, break time, and hourly rate, including overnight shifts.
Open calculator →Billable Hours Calculator
Calculate billable hours, service subtotal, discount, tax, and invoice total from worked and nonbillable time.
Open calculator →Break-Even Calculator
Calculate break-even units, sales revenue, contribution per unit, and margin of safety.
Open calculator →Contribution Margin Calculator
Calculate contribution margin amount, contribution margin ratio, and contribution per unit.
Open calculator →Cash Runway Calculator
Estimate monthly net burn, cash runway in months, and the projected cash-out date.
Open calculator →Inventory Reorder Point Calculator
Calculate the inventory level at which a new order should be placed using demand, lead time, and safety stock.
Open calculator →Economic Order Quantity Calculator
Calculate EOQ, estimated orders per year, order cycle, and annual ordering and holding costs.
Open calculator →Invoice Calculator
Calculate invoice subtotal, discount, tax, shipping, grand total, amount paid, and balance due.
Open calculator →Project Profit Calculator
Calculate total project cost, gross profit, profit margin, and target revenue.
Open calculator →Markup Calculator
Calculate selling price, markup amount, total sales, and resulting gross margin from cost and markup percentage.
Open calculator →Discount Calculator
Calculate discount savings, discounted price, quantity total, tax, and final payable amount.
Open calculator →Business Days Calculator
Count business days, calendar days, weekends, and optional holidays between two dates.
Open calculator →Cash Flow Calculator
Calculate net cash flow, ending cash, and cash-flow margin from opening cash, inflows, and outflows.
Open calculator →Working Capital Calculator
Calculate working capital and current ratio from current assets and current liabilities.
Open calculator →Safety Stock Calculator
Calculate safety stock and reorder point using average and maximum daily demand and lead time.
Open calculator →Inventory Holding Cost Calculator
Estimate annual and monthly inventory holding cost from average inventory value and carrying-cost percentages.
Open calculator →Weekly Timesheet Calculator
Calculate weekly paid hours, regular hours, overtime hours, and estimated gross pay from daily timesheet hours.
Open calculator →Net Pay Calculator
Estimate net pay from gross pay, bonus, an entered tax rate, and other deductions.
Open calculator →Employer Payroll Cost Calculator
Estimate total employer payroll cost from base pay, employer payroll taxes, benefits, insurance, and other employer costs.
Open calculator →Attendance Percentage Calculator
Calculate employee or student attendance percentage from total working days and days present.
Open calculator →Employee Turnover Rate Calculator
Calculate employee turnover rate from separations and average headcount for a selected period.
Open calculator →Business Date Calculator
Add or subtract business days from a date while excluding configured weekends and optional holiday dates.
Open calculator →Working Hours Between Dates Calculator
Calculate working hours between two date-times using a daily work schedule, optional break, weekends, and holiday exclusions.
Open calculator →Payback Period Calculator
Estimate how long it takes cumulative project cash inflows to recover the initial investment.
Open calculator →Discounted Payback Period Calculator
Calculate how long discounted future cash flows take to recover an initial investment.
Open calculator →Loan Comparison Calculator
Compare two amortizing loans side by side using amount, interest rate, and term.
Open calculator →Loan Refinance Calculator
Compare a current loan with a proposed refinance, including closing costs and estimated break-even time.
Open calculator →Debt Service Coverage Ratio (DSCR) Calculator
Calculate DSCR from annual net operating income and annual debt-service obligations.
Open calculator →Hourly to Salary Calculator
Convert an hourly wage into weekly, monthly, and annual earnings, with optional overtime hours and an overtime multiplier.
Open calculator →Full-Time Equivalent (FTE) Calculator
Calculate full-time equivalent staffing from total paid or scheduled hours and the standard full-time hours for the same period.
Open calculator →Employee Utilization Calculator
Calculate billable or productive utilization from productive hours and available working hours, with non-productive hours shown separately.
Open calculator →Absenteeism Rate Calculator
Calculate workforce absenteeism as absent workdays divided by total scheduled employee workdays for the selected period.
Open calculator →Annual Leave Balance Calculator
Estimate earned annual leave, available leave, and remaining balance from annual entitlement, carryover, elapsed months, and leave taken.
Open calculator →Employee Bonus Calculator
Calculate a percentage-based employee bonus, optional fixed bonus, and total gross compensation before taxes or deductions.
Open calculator →Per Diem Calculator
Calculate full-day and partial-day per diem allowances from a daily rate, eligible travel days, and a selected partial-day percentage.
Open calculator →Travel Allowance Calculator
Estimate mileage reimbursement, daily travel allowance, and other approved travel costs in one combined total.
Open calculator →Shift Length Calculator
Calculate elapsed shift time and paid working time from start time, end time, and unpaid break minutes, including overnight shifts.
Open calculator →Lunch Break Calculator
Calculate lunch or meal break duration from break start and end times and convert the duration into minutes and decimal hours.
Open calculator →Payroll Days Calculator
Count scheduled payroll workdays between two dates while excluding selected weekend days and optional holiday dates.
Open calculator →Profit Calculator
Calculate gross profit, operating profit, profit margin, and total costs from revenue, cost of goods, operating expenses, and other income.
Open calculator →Business Budget Calculator
Build a simple business budget from starting cash, expected income, fixed costs, variable costs, and one-time expenses.
Open calculator →Business Burn Rate Calculator
Calculate average net cash burn per month and estimate remaining runway from starting cash, ending cash, and the number of months observed.
Open calculator →Accounts Payable Turnover Calculator
Calculate accounts payable turnover and estimated days payable outstanding from credit purchases and beginning and ending accounts payable.
Open calculator →Days Sales Outstanding (DSO) Calculator
Calculate days sales outstanding, average accounts receivable, and receivables turnover from credit sales and AR balances.
Open calculator →Inventory Days Calculator
Calculate inventory turnover and days inventory outstanding from cost of goods sold and beginning and ending inventory.
Open calculator →Cost Per Unit Calculator
Calculate total cost per unit by spreading fixed and variable production costs across the number of units produced.
Open calculator →Selling Price Calculator
Calculate selling price from cost per unit using either a markup percentage or a target gross margin percentage.
Open calculator →Project Cost Calculator
Estimate total project cost from labor, materials, other direct costs, overhead percentage, and contingency percentage.
Open calculator →Add or Subtract Working Days Calculator
Add or subtract business days from a date while excluding selected weekends and optional holidays.
Open calculator →Decimal Hours to Hours and Minutes Calculator
Convert decimal hours into hours, minutes, and seconds for timesheets, payroll, billing, and scheduling.
Open calculator →Hours and Minutes to Decimal Hours Calculator
Convert hours, minutes, and seconds into decimal hours for payroll, billing, spreadsheets, and time reports.
Open calculator →Time Zone Converter
Convert a local date and time between major world time zones using browser time-zone rules.
Open calculator →International Meeting Time Calculator
Compare one meeting instant across multiple world time zones for remote teams, clients, and international calls.
Open calculator →SLA Business Hours Deadline Calculator
Calculate an SLA deadline from business hours while respecting workday hours, weekends, and optional holidays.
Open calculator →Project Duration Calculator
Calculate calendar span and working days between project start and end dates with weekend and holiday exclusions.
Open calculator →Quotation & Estimate Calculator
Build a quick multi-line quotation total from item quantities and unit prices, with discount, tax, and other charges.
Open calculator →Late Payment Fee Calculator
Estimate simple late-payment interest, fixed late fee, chargeable days after grace period, and total amount due.
Open calculator →Customer Acquisition Cost (CAC) Calculator
Calculate customer acquisition cost from advertising, sales payroll, agencies/tools, other acquisition spend, and new customers acquired.
Open calculator →Customer Lifetime Value (CLV) Calculator
Estimate revenue lifetime value, gross-profit lifetime value, annual customer value, and optional LTV-to-CAC ratio.
Open calculator →Ecommerce Profit Calculator
Calculate ecommerce net revenue, total operating costs, profit, and profit margin after COGS, fees, advertising, shipping, refunds, and other costs.
Open calculator →Shipping Profit Calculator
Calculate per-order profit after product cost, carrier shipping, packaging, marketplace/payment fees, and other costs while including shipping charged to the customer.
Open calculator →Designed for Real Office Work
This collection brings payroll, employee planning, pricing, invoicing, inventory, cash-flow, and project decisions into one consistent workspace. Use the universal search to reopen any tool, save frequently used calculators, or share the current page with a colleague.
Recommended Starting Points
Use the Invoice Calculator for billing, the Employee Total Cost Calculator for hiring budgets, the Break-Even Calculator for sales targets, and the Cash Runway Calculator for liquidity planning.
Browse calculator categories
Move between focused calculator workspaces without returning to the homepage.
Additional HR & Workforce Calculator
New focused calculators added in the final roadmap batch.