Most days the math is not a project. It is a tip, a unit you never remember, a currency you have to look up, a total that should have stayed next to the sentence that produced it. Opening Calculator, Soulver or a browser tab for that is how the number gets orphaned — and how the note becomes a caption for work you did somewhere else.
Hejour treats the day's page as the calculator. Type the expression, end the line with =, and the result is written as ordinary text. It exports with the note. It searches with ⌘P. It is still there tomorrow.
Line by line, top to bottom
Every recognized line is evaluated in order. Later lines can see names defined earlier. Results sit after the equals sign and refresh when you change a number above — the caret does not jump.
lunch: 24 + 6
tip: lunch * 15%
total: lunch + tip =The colon is the assignment. 15% is fifteen hundredths, so lunch * 15% is the tip — not lunch + 15%, which would add 0.15. Write what you mean; the parser is arithmetic, not a mind reader.
Units, without leaving the sentence
Length, volume, mass, duration, storage and temperature convert locally. No network. Mix compatible units on one line; ask for another with to.
12 km to mi =
32 F to C =
90 min to h =
12 ft + 8 in =Feet come back as feet and inches. Names work as well as abbreviations: kilometers, pounds, celsius.
Currency and crypto, when you want live rates
$, €, £, ¥ and ISO codes are first-class. Convert with the same to phrase. Live fiat and crypto use a rate snapshot; turn that off in Settings and local arithmetic still runs. Write to preferred to land in the currency you picked there.
$50 to EUR =
0.01 BTC to USD =
1200 TRY to preferred =Supported codes include USD, EUR, GBP, TRY, JPY, CAD, AUD and others, plus BTC, ETH, USDT, SOL and DOGE. Different currencies do not add until you convert one of them —$20 + €10 is not a line. Convert, then total.
A tiny spreadsheet, still a note
Named values are how a day turns into a working estimate without opening Numbers. Trip costs, a freelance invoice, a recipe scaled up: they stay on the day they belong to, next to the todos and the meeting heading.
rooms: 3
paint: 2.5 L
need: rooms * paint
need to gal =That is the whole feature: notepad math people usually buy a separate app for, sitting inside the notebook you already open. If you came here from Numi or Antinote, the overlap is this layer — not their windows, themes or scratchpad chrome.
Download Hejour for Mac. Type a line, put = at the end, keep writing.