UtilityBaseCalculators
Speed, Distance & Time Calculator
Enter any two of speed, distance, and time to solve for the third — with unit options.
Updated July 13, 2026
How to use the speed, distance & time calculator
- 1Tap 'solve' on the value you want to find.
- 2Enter the other two values and choose their units.
- 3Read the computed result in your chosen unit.
- 4Switch units on any field to convert on the fly.
Common uses
- Estimating how long a drive or trip will take
- Finding your average speed over a distance
- Working out distance covered at a steady pace
- Checking speed-distance-time homework
Frequently asked questions
What's the formula?
distance = speed × time. Rearranged: speed = distance ÷ time, and time = distance ÷ speed. Pick which value to solve for and enter the other two; the tool handles the rearranging and the unit conversions for you.
Can I mix units, like miles and minutes?
Yes. Each field has an independent unit, and the calculator converts everything to meters and seconds internally before computing, then converts the answer back to your chosen unit. So you can enter miles, minutes, and get mph — or any other combination.
Why is my time answer a decimal?
Time is shown in the unit you pick. 2.5 hours means 2 hours 30 minutes — the .5 is half an hour, not 50 minutes. Switch the time unit to minutes if you'd rather see the whole thing in minutes.
About this tool
The speed, distance, and time calculator solves the relationship distance = speed × time for whichever value you're missing. Enter any two and it computes the third — how long a 150-mile drive takes at 60 mph, the average speed for a run, or the distance covered in a given time. Each field has its own units (mph, km/h, m/s, knots; miles, km, meters, feet; hours, minutes, seconds), and everything is normalized internally so you can mix them freely. This is average-speed math, distinct from a geographic distance-between-points tool. Everything runs in your browser.
Like most tools on UtilityBase, the speed, distance & time calculator runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.
Was this tool helpful?
Related tools
Distance Calculator
Straight-line distance between any two places — miles, km, and flight time.
Calculators
Running Pace Calculator
Pace per mile/km, speed, and race finish times from any distance and time.
Calculators
Fuel Cost Calculator
What a trip costs in gas — MPG or L/100km, round trip, and per-person splits.
Calculators
Electricity Cost Calculator
Estimate what a device costs to run from its wattage, hours, and your kWh rate.
Calculators
Mortgage Calculator
Monthly payment with taxes, insurance, PMI, and a full amortization schedule.
Calculators
Scientific Calculator
Full scientific calculator — trig, logs, powers, factorials, with keyboard input.
Calculators