When velocity is constant (no acceleration). s = displacement, v = velocity, t = time.

When to use s = v₀t + ½at²?

When there is constant acceleration a. v₀ is initial velocity, t is time.

Use consistent units (e.g. m, m/s, s; or ft, ft/s, s). Displacement will be in length units.

Online Displacement Calculator (s = vt & s = v₀t + ½at²)

Calculate displacement: constant velocity s = vt or uniform acceleration s = v₀t + ½at².

Mode

s = vt (constant velocity)s = v₀t + ½at²

Velocity v

Time t

When to use s = vt?: When velocity is constant (no acceleration). s = displacement, v = velocity, t = time.
When to use s = v₀t + ½at²?: When there is constant acceleration a. v₀ is initial velocity, t is time.
Units?: Use consistent units (e.g. m, m/s, s; or ft, ft/s, s). Displacement will be in length units.

Celsius to Fahrenheit Converter

Convert Celsius to Fahrenheit and Fahrenheit to Celsius instantly. Free temperature converter.

Tip Calculator

Calculate tip and split the bill. Enter bill amount, tip percentage, and number of people.

Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals to numbers. Supports 1–3999.

Combinations Calculator

Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).

Combinations with Replacement Calculator

Calculate the number of ways to choose r items from n with repetition allowed. Formula: C(n+r-1, r).

Even Permutations Calculator

Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.