Uniformly Accelerated Motion Calculator 2026 — GlobalCalc

GlobalCalc

Inputs

Initial velocity

m/s

Acceleration

m/s²

Time

Results update as you type

Results

Final velocity

15 m/s

Displacement—

Average velocity—

Final velocity in km/h—

Acceleration in g—

Check via v² = u² + 2as—

Time to return to rest at this rate—

Reviewed September 2026. Physics is the same everywhere: SI units in, with imperial equivalents in the results.

All calculations run 100% in your browser. The calculator code does not submit your figures to GlobalCalc to obtain a result.

About uniformly accelerated motion

Method

How the uniformly accelerated motion calculator works

Four equations describe constant acceleration, and each omits one variable: v = u + at (no s), s = ut + ½at² (no v), v² = u² + 2as (no t), and s = ½(u+v)t (no a).

Given any three of the five you can find the other two. The calculator takes u, a and t as the most common set and reports everything else.

Formula: v = u + at; s = ut + ½at²; v² = u² + 2as

Data

Worked examples

Inputs	Final velocity	Note
From rest at 3 m/s² for 5 s	15 m/s	15 m/s after 37.5 m
Braking from 20 m/s at −5 m/s²	0 m/s	stops exactly at 4 s
Free fall for 3 s	29.41995 m/s	29.4 m/s after 44.1 m

FAQ

Frequently asked questions

What does SUVAT stand for?

The five variables: s (displacement), u (initial velocity), v (final velocity), a (acceleration), t (time). Each equation uses four of them.

When do these equations apply?

Only when acceleration is constant. Variable acceleration needs calculus.

Which equation should I use?

The one that omits the variable you neither know nor want. If time is unknown, use v² = u² + 2as.

Why does displacement grow with t²?

Because the velocity itself is growing. Distance is the area under the velocity–time graph, and for a rizing line that area is a triangle.

Does free fall use these?

Yes, with a = 9.81 m/s² downward — provided air resistance is negligible.

Sources

Where these figures come from

NIST — CODATA 2018 fundamental physical constants — G, g₀, R, c
NIST Special Publication 811 — Guide for the use of the International System of Units — unit conversions
The Engineering ToolBox — material properties — specific heats, expansion coefficients, densities
National Institute of Standards and Technology — the US measurement authority

Last checked: September 2026. Constants are the CODATA 2018 values; formulas are the standard textbook forms.