INVEST IN YOUR TOMORROW
Time Calculator
Add or subtract durations in hours, minutes and seconds.
Your details
Your result
Enter your details and select Calculate.
How it works
Add or subtract durations in hours, minutes and seconds.
Convert to seconds → calculate → convert back
Good to know
Enter valid values in the stated units. Results are rounded for display; calculations retain full precision.
Using the Time Calculator
How do I use this calculator?
Enter first duration (hh:mm:ss), operation, second duration (hh:mm:ss). Select Calculate to see the result. Use Reset to return to the example inputs.
What calculation does Wishoo use?
Convert to seconds → calculate → convert back
What should I keep in mind?
Enter valid values in the stated units. Results are rounded for display; calculations retain full precision.
Explore calculators
50 tools₹SIP CalculatorBanking & finance◷Age CalculatorDate & time◷Day / Date CalculatorDate & time◷Time CalculatorDate & time◷Working Days CalculatorDate & time◷Time Zone ConverterDate & time◷Date CountdownDate & time◷Leap Year CalculatorDate & time₹EMI CalculatorBanking & finance₹GST CalculatorBanking & finance₹Income Tax CalculatorBanking & finance₹Compound Interest CalculatorBanking & finance₹Simple Interest CalculatorBanking & finance₹FD CalculatorBanking & finance₹RD CalculatorBanking & finance₹PPF CalculatorBanking & finance₹NPS CalculatorBanking & finance₹EPF / PF CalculatorBanking & finance₹Gratuity CalculatorBanking & finance₹Lumpsum Investment CalculatorBanking & finance₹CAGR CalculatorBanking & finance₹SWP CalculatorBanking & finance₹Inflation CalculatorBanking & finance₹Crypto / Stock Profit CalculatorBanking & finance∑Percentage CalculatorMath & converters∑Scientific CalculatorMath & converters∑Fraction / Ratio CalculatorMath & converters∑Unit ConverterMath & converters∑Land Area ConverterMath & converters∑Currency ConverterMath & converters∑CGPA to PercentageMath & converters∑Random Number GeneratorMath & converters∑Statistics CalculatorMath & converters♡BMI CalculatorHealth & lifestyle♡BMR / TDEE CalculatorHealth & lifestyle♡Pregnancy Due Date CalculatorHealth & lifestyle♡Ovulation / Fertility CalculatorHealth & lifestyle♡Calorie Deficit CalculatorHealth & lifestyle♡Ideal Body Weight CalculatorHealth & lifestyle♡Macro CalculatorHealth & lifestyle⌘Word & Character CounterDigital utilities⌘CPM / CPC Ad CalculatorDigital utilities⌘Aspect Ratio CalculatorDigital utilities⌘Download Time CalculatorDigital utilities⌘Pixel to REM / EM ConverterDigital utilities▤Take-Home Salary CalculatorSalary & commerce▤HRA CalculatorSalary & commerce▤Margin & Markup CalculatorSalary & commerce▤Discount CalculatorSalary & commerce▤Fuel Cost / Trip CalculatorSalary & commerce