P(t) = P₀ × e^(rt), where P₀ is initial value, r is growth rate (e.g. per year), t is time in the same units.

What if r is negative?

Negative r gives exponential decay: P(t) decreases over time.

What units should I use?

Use consistent units: e.g. r in per year and t in years, or r per day and t in days.

Calculate exponential growth: P(t) = P₀ × e^(rt). Enter initial value P₀, rate r, and time t.

P₀ (initial value)

r (growth rate, e.g. 0.05 for 5%)

t (time)

What is the formula?: P(t) = P₀ × e^(rt), where P₀ is initial value, r is growth rate (e.g. per year), t is time in the same units.
What if r is negative?: Negative r gives exponential decay: P(t) decreases over time.
What units should I use?: Use consistent units: e.g. r in per year and t in years, or r per day and t in days.

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