The box: Remember me, pre-checked. Checked: 400 days. Unchecked: 400 days. No difference. Both hit Chrome's 400-day cap on the same day.
Measured October 16, 2026 in a Chromium-based browser, by signing in to Steam and reading the sign-in cookie's expiry. This is what the browser was told; Steam's servers can still end a session sooner.
We retest every month. If Steam changes how long it remembers you, a new row shows up here.
| Date | The box | Checked | Unchecked | Finding | Browser |
|---|---|---|---|---|---|
| October 16, 2026 | Remember me, pre-checked | 400 days | 400 days | No difference. Both hit Chrome's 400-day cap on the same day. | Chromium |