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The fastest way to understand workplace numbers.
Free calculators for pay raises, overtime, PTO, and employee turnover. Type your numbers and get an instant, accurate answer — with the formula shown and explained in plain English. No account. No spreadsheet. No waiting.
Who it’s for
Whether you’re an employee, an HR professional, or a manager — Calcento gives you a fast, honest answer.
👤For Employees
Get a clear answer before your next conversation.
- →Is this raise offer good? See the percentage and what it means per paycheck.
- →How much overtime will I earn? Get the exact figure before you commit to extra hours.
- →How much PTO have I accrued? Know your balance without waiting for HR.
🏢For HR & People Teams
Quick answers between HRIS tasks.
- →Explain a raise to an employee in seconds — show them the math, not just the number.
- →Benchmark your turnover rate and estimate the real cost of each departure.
- →No need to open a spreadsheet for a one-off calculation.
📊For Managers & Small Businesses
No HRIS? You don't need one for this.
- →Budget a pay raise without a compensation team.
- →Understand overtime costs before scheduling extra shifts.
- →Measure team turnover and see what replacing people actually costs.
All calculators
Eleven free tools — pay, hours, leave, bonuses, and HR metrics.
Pay Raise Calculator
Work out a raise by percent or amount — or compare two salaries.
Overtime Pay Calculator
Time-and-a-half and double-time, with weekly totals.
Salary to Hourly Calculator
Convert an annual salary to an hourly rate — or hourly to annual.
Working Hours Calculator
Weekly timesheet with overtime flagged and optional pay estimate.
Bonus Calculator
Calculate a performance bonus and your total annual compensation.
Vacation Days Calculator
Days remaining and pro-rata leave for mid-year starters.
Job Offer Comparison Calculator
Compare two offers on salary, bonus, PTO, and hidden costs.
Employee Turnover Rate Calculator
Turnover and retention rates from headcount and leavers.
PTO Accrual Calculator
Accrued paid time off by hours worked or pay period.
Cost of Employee Turnover Calculator
Estimate what staff turnover actually costs your business.
Bradford Factor Calculator
Bradford absence score with interpretation bands for HR teams.
Why Calcento
Built for people who need a quick, honest answer — not another tool to manage.
Results in seconds
Type your numbers and the answer updates instantly. No submit button, no loading screen.
No account. Ever.
No sign-up, no email, no password. Your numbers stay in your browser and go nowhere.
Every formula shown
Each calculator explains exactly how the result is calculated — so you can verify it yourself.
Plain English, not jargon
Guides written by an HR Manager with 10+ years of experience. Clear language, realistic examples.
Frequently asked questions
Everything you need to know before you start.
Yes — every calculator is completely free. No subscription, no trial, no sign-up required. Open a tool, type your numbers, and get your result instantly.
Still have a question? Contact us.