`Delta t = t_2 - t_1`

Enter a value for all fields

The Delta t calculator computes the difference between two times, time 2 (t₂) and time 1 (t₁).  

INSTRUCTIONS:  Choose units and enter the following:

• (t₁) The initial reference time
• (t₂) The second reference time

Delta t (?t): The calculator returns the difference in seconds.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the change in time is:

     ?t = t₂ - t₁

where:

• ?t is the difference in time between the two reference times.
• t₁ is time reference point one.
• t₂ is time reference point two.

Related Calculators

• Change in Distance
• Change in Time

References

• Light and Matter(Dr. Benjamin Crowell) Chapter 2.2 Describing Distance and Time