How we work out the numbers
Where each price, travel time and season window in our guides comes from.
Every figure in a JapanQuest guide starts from an official source and carries the date we checked it. Prices start in yen, then convert to ringgit at a stated rate. Times come from operators, and seasons come from historical records rather than forecasts.
How do we calculate costs?
We take the yen price from the official source: the rail company, the attraction or the operator that sells the ticket. That yen figure is the anchor, because it is what you pay in Japan.
We then convert it to ringgit at a stated exchange rate, and we cite that rate with its date. You will see it written as “about RM X at a given yen to ringgit rate on a given date”. If the rate moves, the yen figure stays true and you can redo the sum yourself.
We round ringgit figures so they read cleanly. Small gaps between our estimate and your bank statement come from card fees and the rate on the day you pay.
How do we work out travel times?
Rail and bus times come from the operator’s own timetables or route planners. We quote the scheduled journey for the service named in the guide.
Door-to-door time is longer than the train ride. Where it matters, we add time for transfers, platform changes and getting from the station to your stay, and we say that we added it.
How do we describe seasons?
Cherry blossoms, autumn leaves and snow follow nature, so we describe them as historical ranges. A range shows when something has happened in past years, based on records from Japan’s weather agencies and official tourism sources.
A range is not a forecast. For a trip that depends on a bloom or on snow, check the current season’s official forecasts closer to your dates. Our disclaimer explains this in more detail.
What do our planning tools assume?
Our planning tools run in your browser. Each tool lists its own assumptions next to the result, such as the exchange rate used, the fare source and its date.
Tool results are estimates for planning. They help you compare options, like two routes or two pacing styles, before you settle on one.
What does “unknown” mean?
When we write “unknown” or leave a value blank, we could not confirm it from a reliable source. That can happen when an operator has not yet published next season’s fares or hours.
We leave the gap visible rather than fill it with a guess. If you need that detail for your plan, message us on WhatsApp and we will look into it as part of your trip.
How does this connect to our editorial policy?
The rules for choosing sources, citing them and correcting mistakes sit in our editorial policy. This page covers the arithmetic and assumptions behind the numbers.
You can see both at work across our guides and destination pages.
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