Our methodology

Reference values come from government agencies, regulators, recognised professional bodies or a maker's published guidance. The source list on each tool links to the original guidance.

Guidance stays tied to the country, food and preparation it covers. Switching between kilograms and pounds does not switch the underlying safety rules. When a verified cooking timetable is unavailable, we say so rather than make one up.

Some tools use official tables. Others organise the cooking times, quantities or steps you enter. Editable defaults are starting points, not promises about your food or oven.

Check those inputs against your recipe, packaging and appliance instructions. A planner cannot account for every oven, tray size or change in ingredients.

For a simple roast, subtract resting time and cooking time from the time you want to eat. Where a reference gives a cooking range, the roast planner uses the longer time to work out when to start.

Longer schedules keep the full date and selected time zone, including steps that cross midnight. Ambiguous or missing clock times around daylight saving changes are flagged. Calendar downloads preserve the scheduled moments so your calendar can display them in its own time zone.

Calculation logic is tested separately from the page controls, using worked examples and relevant boundary cases. We also check the affected pages on phones and larger screens, including saving, sharing and downloads.

These checks help catch mistakes, but they do not make a result a safety guarantee. If a calculation or source looks wrong, tell us which page and inputs you used.

The details you enter and the references a tool uses have different jobs. A serving time is your target. A recipe duration is a planning input. A sourced temperature or timing reference applies only within the conditions described on that page.

Suppose you enter a recipe cooking time of 90 minutes, a resting time of 20 minutes and a serving time of 19:00. The plan places the rest immediately before serving, then puts the cooking period before the rest.

That gives a 17:10 cooking start and an 18:40 resting start. Preparation before cooking, oven preheating and any separate sides still need to be allowed for. These durations are illustrative inputs, not a cooking recommendation for a particular food.

A range is not a promise that every food will be ready at its upper or lower end. Where a planner uses a particular end of a published range, its explanation identifies that choice. The tool's own notes also explain relevant rounding and conversions.

A result is limited by the information available. A tool may ask for a package duration, leave an unsupported estimate unavailable or show a check without a cooking timetable. It should not silently borrow a different country's rate to fill a gap in the evidence.

Changing a weight, serving date, recipe duration or quantity changes the problem the planner is solving. Recalculate after editing inputs and check the new result before using it. If you want to keep that version, save it again or make a fresh export.

A shared link or downloaded plan is a copy of a particular set of settings. Someone opening a copy may be using a different device or calendar time zone. Read the dates, units and country on the result rather than assuming it still describes today's meal.