Description: The new Duration Estimator transforms how you plan web and feature experiments. By automating the busywork and making trade-offs transparent, you can now confidently design tests with realistic timelines without leaving Amplitude or manually pulling historical data.

With the new duration estimator you can:

• Skip the manual data entry: Traffic volume and baseline conversion rates automatically populate from Amplitude Analytics. No more copying numbers from charts or guessing based on outdated spreadsheets.
• Understand trade-offs at a glance: The Duration Scenarios table instantly shows how different lift targets (MDE) and confidence levels affect test duration, helping you make smarter prioritization decisions without trial and error.
• Get plain-language guidance: Receive clear, stakeholder-ready outputs like “To detect a 10% relative improvement with 90% confidence, your test needs ~40 days.” No statistical jargon required.
• Access advanced options when you need them: Keep it simple by default, or expand into confidence level, statistical power, rollout settings, and more for deeper control.

Why: Competitors force you to manually enter traffic and baseline metrics, pulling you out of your workflow and introducing errors. Our new Duration Estimator keeps you inside Amplitude, automatically pulling the data you need and surfacing scenario planning upfront. This means fewer inconclusive tests, better experiment prioritization, and realistic stakeholder expectations, all without switching tools or waiting on analysts.

Where: Upper right corner “Estimate Duration” button on the Experiment landing page.

Available in EUDC: Yes

When: Live now

Customers Impacted: Available to all customers