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About this tool
Convert years to fortnights instantly. Free, bidirectional, and fully in-browser.
1 year (julian) equals 26.08928571 fortnights — enter any year (julian) value to convert it to fortnights instantly. This Year (Julian) to Fortnight converter is a client-side tool: it applies a single multiplication (fn = yr × 26.08928571) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert fortnights back to years. A reference table lists common year (julian) values already converted, and nothing you enter is sent to a server.
Open Year (Julian) to Fortnight Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Year (Julian) field.
Read the equivalent in fortnights in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert fortnights to years.
The result updates as you type, and the swap button flips the conversion to fortnight → year (julian) without reloading.
The conversion uses the precise factor (fn = yr × 26.08928571), so the number matches a manual calculation to the decimal places you choose.
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Everything runs locally in your browser — no upload, no account, no limit on conversions.
One year (julian) is 26.08928571 fortnights. Multiply the year (julian) value by 26.08928571 to convert. For example, 10 yr = 260.8928571 fn.
fn = yr × 26.08928571. This tool applies it automatically and shows a worked example: 10 yr = 260.8928571 fn.
Yes. Press the swap button, or type into the fortnight field, and the tool converts fortnights to years using the inverse of the same relationship.
It uses the standard time and duration definition (fn = yr × 26.08928571), not a rounded approximation, so results are exact to the number of decimal places you select.
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Add the Year (Julian) to Fortnight Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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