# Speed Distance Time Calculator

## Calculator Use

Calculate speed, distance or time using the formula d = st, distance equals speed times time. The Speed Distance Time Calculator can solve for the unknown
*sdt* value given two known values.

Time can be entered or solved for in units of secondes (s), minutes (min), hours (hr), or hours and minutes and seconds (hh:mm:ss). See shortcuts for time formats below.

To solve for distance use the formula for distance d = st, or distance equals speed times time.

*distance = speed x time*

Rate and speed are similar since they both represent some distance per unit time like miles per hour or kilometers per hour. If rate
*r* is the same as speed
*s*, r = s = d/t. You can use the equivalent formula d = rt which means distance equals rate times time.

*distance = rate x time*

To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time.

*speed = distance/time*

To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.

*time = distance/speed*

### Time Entry Formats hh:mm:ss

You can use a dash (-), period (.) or colon (:) as separators and must always use 2 separators. For example, 15-06-22, 15.06.22 and 15:06:22 are all interpreted as 15 hours 6 minutes 22 seconds or 15:06:22.

Entry limits allowed:

- hours 0 to 999
- minutes 0 to 59
- seconds 0 to 59

5.01.15

5.3.6

5 hours : 1 minute : 15 seconds

5 hours : 3 minutes : 6 seconds

05:01:15

05:03:06

## Related Calculators

For physics calculations with speed, displacement and velocity use our
Displacement Calculator to solve for displacement
*s*, average velocity *v* or time *t*.