Frequently Asked Questions
Common questions about the SUVAT Calculator.
How does the SUVAT calculator work?
Enter any 3 of the 5 known values (s, u, v, a, t); it solves the other 2 using the SUVAT equations and shows the steps.
What does SUVAT stand for?
Displacement (s), initial velocity (u), final velocity (v), acceleration (a), and time (t).
Is it free?
Completely free, no sign-up, downloads, or limits.
Does it show the steps?
Yes, it shows which equation was used and the full substitution for each unknown.
What if I get two answers for time?
Some equations are quadratic in time; the calculator shows both roots and explains which is physically valid.
Can it handle deceleration?
Yes, enter acceleration as a negative value; the calculator handles negative values correctly and explains the sign convention.
What if my inputs don't make sense together?
The calculator checks for inconsistency between your 3 known values and flags it rather than showing a wrong answer.
What units does it use?
SI units throughout: metres, metres per second, metres per second squared, and seconds.
Is my data stored?
No; everything runs in your browser and isn't stored or sent anywhere.
Does it work on mobile?
Yes, fully responsive on all screen sizes.