Time Calculator: Add & Subtract Times

Calculate \(T_1 + T_2\) and \(T_1 - T_2\) for times given in hours, minutes, and seconds. Step-by-step calculations included.

Time Conversion Facts

Decimal Hours Formula

Decimal Hours = Hours + \( \frac{\text{Minutes}}{60} \) + \( \frac{\text{Seconds}}{3600} \)

Time Calculator

Enter two times in hours, minutes, seconds
TIME 1 (T₁)
TIME 2 (T₂)

T₁ + T₂ (Sum)

-- hours   -- minutes   -- seconds
= -- hours (decimal)
Step-by-step calculation:
Click Calculate to see steps

T₁ - T₂ (Difference)

-- hours   -- minutes   -- seconds
= -- hours (decimal)
Step-by-step calculation:
Click Calculate to see steps

Related Resources

analyzemath.com — Add and subtract times with detailed step-by-step explanations using formula: hours + minutes/60 + seconds/3600.