About ViaCalc

One engine, ten editions

Every figure on this site — the one inside the tool, the one in the worked example and the one printed on a Trip Card — comes out of the same piece of code. There is no second set of numbers written by hand somewhere in the text, because that is how a page ends up contradicting its own calculator. A release check compares the printed figures against the engine before anything is published; when they disagree, the build stops rather than the reader finding out.

The arithmetic travels: kilometres, litres, time zones and suitcase dimensions behave identically everywhere. What does not travel is the context around them, so each edition has its own briefing file — the currency and units it thinks in, the airlines it actually flies, the countries it drives through, and a paragraph on every tool page that could only have been written for that market. Ten editions of the same template with swapped nouns would be worth nobody’s time.

The Trip Card

Most travel tools answer with a number and stop. Alongside the number, each tool here adds the one line the reader did not know to ask for — how many centimetres over an allowance a case is and what the gate charges for it, that a route crosses a country where a vignette is mandatory from the first kilometre, what local time a flight lands and what that is on the traveller’s body clock. That line, the inputs behind it and a link that reopens exactly this case make up the Trip Card: one page to send to whoever is travelling with you.

A card only ever carries the values one calculation produced, together with the source of any tariff it names. It is not a copy of an airline’s table or of a road operator’s tariff list, and the site does not republish those.

What this site refuses to do

• No invented figures. Every allowance, tariff and pump price carries a source and a check date. Where a figure has not been confirmed against two independent sources, the page marks it as unconfirmed instead of asserting it.
• No currency conversion. The site holds no exchange rates, so a route that crosses a currency border is reported per currency rather than merged into one tidy total that would be quietly wrong.
• No guarantees. Carriers change their allowances and road operators change their tariffs. These tools are for planning; the carrier’s or operator’s own page is what binds.
• Nothing between you and the answer. No modal, no newsletter prompt and no advertisement stands in front of a calculator. Advertising slots reserve their space from the first day so the layout never jumps, and there is nothing in them until a network has approved the site.

Who publishes it

ViaCalc is run by a small independent team, not by an airline, a rental company or a booking platform. Nothing on the site is a paid placement today. If commercial links are ever added, they are marked as such above the first link a reader can click, and any market where such links would be inappropriate is switched off entirely.