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 →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.