Free online calculators
Everyday math, made simple.
Free calculators for work hours, pay, dates and everyday decisions. Fast answers, clear steps, no sign-up required.
Popular calculators
Time Cards and TimesheetsTime Card CalculatorEnter your clock-in and clock-out times for the week to total hours, split overtime and estimate gross pay.Pay and SalaryOvertime CalculatorWork out overtime pay at time and a half for hours over 40 in a workweek, under federal rules.Pay and SalaryHourly to Salary CalculatorConvert between hourly, weekly, biweekly, monthly and annual pay. Gross pay before taxes.Dates and Business DaysBusiness Days CalculatorCount business days between two dates, or find the date a number of business days away.Time Cards and TimesheetsHours CalculatorFind the hours between a start and end time, with unpaid breaks, for one shift or several.Percentages and MathPercentage CalculatorFind a percent of a number, what percent one number is of another, or the whole from a part.Dates and Business DaysAge CalculatorFind an exact age in years, months and days, the next birthday, or the age gap between two people.Everyday UtilitiesTip CalculatorCalculate the tip and split the bill between any number of people.
Browse by topic
Time and Work HoursAdd, subtract and convert time4 calculatorsTime Cards and TimesheetsWeekly hours, breaks and overtime3 calculatorsPay and SalaryOvertime, salary, raises and PTO6 calculatorsDates and Business DaysCount days, add dates, find ages4 calculatorsPercentages and MathPercent, average, fraction and ratio5 calculatorsBusiness and PricingMargin, markup, discounts and tax5 calculatorsEveryday UtilitiesTips, unit prices and gas costs3 calculators
Calculators that show their work
Every SumPanda calculator prints the formula it used with your numbers filled in, so you can check the answer instead of taking it on trust. Where the law matters, such as overtime, the tool says exactly which rule it applies and where that rule stops.
- Runs in your browser. What you type is not sent to a server.
- No account, no sign-up. Open a tool and use it.
- Tested formulas. Each calculator is checked against hand-worked answers, including leap years, overnight shifts and rounding edges.
- Honest limits. Federal rules are labeled as federal. State rules are never guessed.
Guides
How to Calculate Hours Worked (Breaks, Overnight)A step-by-step method for finding hours worked from clock times, including unpaid breaks, overnight shifts and a full week of totals.How to Fill Out a Time Card CorrectlyWhat goes on a paper or digital time card, how to record punches and breaks, how to fix mistakes and how to total the week.How to Calculate Weekly Work HoursHow to total weekly hours, what counts as a workweek, how to average hours over several weeks and when overtime starts.How to Convert Minutes to Decimal Hours (With Chart)Divide minutes by 60. This guide explains the method, shows a chart for common minutes and explains how to avoid rounding drift in payroll.