Quick tour

This tour shows the shape of a Numlex sheet. Every line you type is checked; anything Numlex cannot parse stays quiet instead of guessing.

Lines and answers

Each line is an independent calculation. The answer appears in the column on the right — live, as you type:

30 + 567 × 2            1,164
15% of 4572             685.8
$240 + 10% tip          $264.00
sqrt(144)               12

No formula bars, no cell references, no syntax to learn beyond ordinary math notation.

Sections and totals

A # heading starts a section; a standalone total line adds up the answers above it and starts a fresh section:

# Household
Groceries               86.40
Power bill              42.10
total                   128.50
# Next month
Groceries               91.05

The Total footer at the bottom of the sheet can be hidden if you prefer a cleaner column.

Reusing answers

Double-click any answer (or type an operator on a new line) to insert a live token — a small bubble that always shows the current value of its source line. Change the source, and every token that references it updates. See Linked answers.

Conversions in the same sheet

Units, currencies and weather sit next to plain arithmetic:

250 km to m             250,000 m
34 C to F               93.2 F°
$500 to EUR
weather in London

See Units, currencies & weather.

Where your data lives

Sheets are stored on your Mac in ~/Library/Application Support/Numlex. Import and export any sheet as a .nlx file. See Sheets & files and Privacy & network.