Speed Distance Time Calculator
Calculate speed, distance, or travel time by entering any two values. Perfect for road trips, physics problems, and commute planning.
The Speed-Distance-Time Formula
The relationship between speed, distance, and time is one of the most fundamental concepts in physics. The three formulas are:
Speed = Distance ÷ Time
Distance = Speed × Time
Time = Distance ÷ Speed
These formulas work for any consistent units: miles/mph, km/km/h, or meters/m/s. Just make sure your units match!
How to Use This Calculator
- Select what you want to find: speed, distance, or time
- Enter the two known values
- Click "Calculate" to get the missing value
- Use this for travel planning, physics problems, or commute estimates