Calculator Tools
Powerful calculation tools for time tracking, payroll, work hours, and mathematical computations to streamline your workflow.
Calculator
23 Tools
About Calculator Tools
Calculator tools provide essential computational functionality for business, personal, and professional use. Our collection includes specialized calculators for time tracking, payroll processing, and various mathematical operations that save time and reduce errors.
These tools are perfect for managers, HR professionals, freelancers, and anyone who needs accurate calculations for work-related tasks. From calculating work hours and overtime to processing payroll and time cards, these calculators handle complex scenarios with ease.
All calculations are performed locally in your browser, ensuring complete privacy of your sensitive business and personal data while providing instant, accurate results for your computational needs.
Common Use Cases:
- Calculate employee work hours and overtime pay
- Process weekly and bi-weekly timesheets for payroll
- Track break times and deductions accurately
- Compute wages and salary calculations
- Manage time cards for multiple employees
- Generate reports for accounting and HR departments
Available Tools
23 Available
Calculate work hours, breaks, overtime, and wages with an intuitive weekly timesheet. Perfect for payroll and time tracking.
Calculator
Time
Payroll
Work
Hours
Precision stopwatch with Unix timestamps down to milliseconds. Track elapsed time with both human-readable dates and Unix timestamps.
Time
Stopwatch
Unix
Timestamp
Milliseconds
Convert annual, monthly, or weekly salary to hourly rate with customizable working hours and detailed calculation breakdown.
Calculator
Salary
Finance
Payroll
Calculate SLA percentages, uptime, and downtime periods. Convert between SLA percentages and actual downtime with industry standard examples.
SLA
Calculator
Uptime
Downtime
Service Level
Track and analyze sleep debt with customizable goals, interactive charts, recovery planning, and scientific insights into sleep health.
Sleep
Health
Calculator
Tracking
Wellness
Calculate caffeine levels in your system over time with interactive charts, consumption tracking, and personalized recommendations for better sleep.
Caffeine
Health
Calculator
Sleep
Wellness
Add or subtract years, months, weeks, days, hours, minutes, and seconds to datetime inputs. Supports batch processing and file uploads.
DateTime
Calculator
Time
Converter
Batch
Calculate age differences between multiple people. Input names and birthdates to see age gaps between all persons in an easy-to-read card format.
Calculator
Age
Bulk
Comparison
Compare weight and height measurements between multiple people. Input names, weights, and heights to see detailed comparisons and BMI calculations.
Calculator
Health
Bulk
Comparison
BMI
Estimate race finish times and calculate required pace for any distance. Plan your training with precise pace calculations and export results to CSV.
Calculator
Running
Race
Training
Pace
CSV
Calculate running pace times for different distances with minute/second per km/mile input. Generate pace tables with highlighted special distances like 5K, 10K, half marathon.
Calculator
Running
Pace
Training
CSV
Marathon
Calculate time differences between consecutive timestamps in CSV data. Process CSV text or files and select timestamp columns for delta analysis.
Timestamp
CSV
Calculator
Delta
Time
Calculate investment returns for lumpsum investments with CAGR, future value, and compound interest calculations. Browser-based history tracking for all calculations.
Calculator
Finance
Investment
CAGR
Compound Interest
Calculate and compare unit prices (cost per ounce, pound, kilogram, liter) to find the best value when shopping. Track calculation history.
Calculator
Shopping
Price Comparison
Unit Price
Calculate discounts with tax considerations. Support for percentage off, fixed amounts, bulk deals (2 for 1, 3 for 2), and complex discount scenarios.
Calculator
Shopping
Discount
Tax
Savings
Calculate electricity costs for multiple appliances. Add appliances with power ratings, quantities, and runtime to estimate daily consumption and costs.
Calculator
Electricity
Energy
Cost
Appliances
Calculate the true cost of meetings based on attendee salaries, meeting duration, setup time, and supplementary costs. Support for one-time and recurring meetings.
Calculator
Business
Productivity
Meeting
Cost
Calculate Cost Per Click (CPC) and Cost Per Mille (CPM) for advertising campaigns. Convert between CPC and CPM using CTR with detailed calculation history and examples.
Calculator
Marketing
Advertising
CPC
CPM
Calculate customer retention rate and attrition rate with detailed breakdown. Track existing customers, new acquisitions, and analyze customer loyalty metrics.
Calculator
Business
Customer
Retention
Analytics
Calculate customer churn rate based on starting customers and customers lost during a period. Track customer retention with detailed breakdown and analysis.
Calculator
Business
Customer
Churn
Analytics
Calculate probability of coin flip outcomes with step-by-step examples. Track results with browser-based calculation history and detailed explanations.
Calculator
Probability
Statistics
Mathematics
Calculate fair tip distribution based on hours worked. Divide total tips proportionally among employees based on their work hours with detailed breakdown.
Calculator
Tips
Payroll
Hospitality
Finance
Estimate how long it takes for an investment to double using the Rule of 72 formula. Calculate time to double based on interest rate with both approximation and exact calculations.
Calculator
Finance
Investment
Rule of 72
Interest