UnitSheet
The spreadsheet with units. Built for STEM.
Work with units, not just numbers.
UnitSheet treats quantities as data: value and unit together, so formulas stay dimensionally correct and conversions happen automatically. In other spreadsheet applications, units are just comments and conversion factors are ad-hoc. A mislabeled cell or mixed dimension can silently produce a meaningless value — or worse, a catastrophic failure.
280+ units across 61 dimensions.
Preview the quantity engine
Try an expression using the same unit-aware arithmetic UnitSheet uses in
workbooks.
No account needed.
Open the full calculator with expressions and unit reference →
The problem with ordinary spreadsheets
Silent failures
Wrong units can produce plausible numbers. Nothing flags that your result is meaningless.
Manual conversion
You maintain lookup tables, sanity checks, and unit-checking formulas by hand.
No dimensional guardrails
Adding meters to seconds is allowed. The sheet has no idea the answer is nonsense.
How UnitSheet is different
Units are data
Dimensions travel with values through every formula.
=25mi / 35min → mph → 42.86mph
Automatic conversion
Same-dimension arithmetic converts in place — results follow the first term's unit.
=5m + 3ft → 5.9144m
Errors, not lies
Incompatible dimensions surface as errors, not quiet wrong answers.
=5m + 3s → #UNIT
Built for technical work
For anyone who thinks in meters, newtons, kelvin, or ampere-hours — analysis, teaching, and verification, not general office use.
UnitSheet is under active development. Core quantity arithmetic, formula evaluation, and workbook storage are in place. Accounts are for early access while the interface and collaboration features mature.
Ready to work with real quantities?
UnitSheet is in early access. Join the waitlist to get notified.
Already have one? Log in