Raw data in,
clean charts out.
LabScale is a free workbench for analysing, fitting and plotting measurement data. Paste a column, get a graph. Run a test, get a report. Nothing to install and nothing leaves your device.
Animation: streams of zeros and ones move from the left and are transformed into line charts, bar charts, scatter plots with a regression line, heat maps and spectra with fitted peaks.
Four steps from file to figure
The same workspace carries your data from import to a finished, publication-ready result.
Everything a lab notebook needs
One tool instead of a spreadsheet, a statistics package, a curve fitter and a plotting program.
Worksheets
Spreadsheet-style grids with formulas, fill, sort, filter, find and replace, column formats and dates. Insert and delete rows and columns, or use functions such as SUM, CORREL and COUNTIF.
110+ chart types
From line, scatter and box plots to violin, Sankey, Piper, Smith, ternary, 3D surfaces, isosurfaces and clustered heat maps. Add trendlines, error bands, tables and maths text.
110+ analyses
Descriptive statistics, t-tests, ANOVA, non-parametric tests, regression, survival, PCA, clustering, time series, power analysis and a Stats Advisor that suggests the right test.
Curve fitting
49 built-in models plus your own formulas: global fits with shared parameters, weights, bounds, confidence bands, peak finding, baselines and model comparison.
Signal processing
Smoothing, FFT and inverse FFT, filters, wavelets, spectrograms, Hilbert transform, convolution and correlation. Preview your signal while you work.
Quality and DOE
Control charts, process capability, gage R&R, tolerance intervals, acceptance sampling, stability studies, factorial and response-surface designs.
Reports and layouts
Every result is logged and updates when data change. Build layout pages, write report notes with live placeholders and export PDF, Word, HTML, Markdown or PowerPoint.
Made for flow
Global search, right-click menus, undo history, templates, drag-and-drop import with a smart import wizard, dark mode and three layouts from full ribbon to minimal.
See the data before you decide
Select columns and preview them as dozens of chart types at once, then keep the one that tells the story.
Everyday
Statistics
Science and engineering
Surfaces and 3D
Flows and networks
Maps and diagrams
Your data stays on your device
LabScale is a static web app. All calculations run in your browser, projects are saved in local storage, and there are no accounts, trackers or cookies.
- Works offline once loaded
- Open formats: CSV, Excel, JSON, HTML tables, XML in; PDF, SVG, EPS, PNG, XLSX, DOCX, PPTX out
- Optional components such as the Excel reader load only after you agree
// while you analyse uploads 0 bytes tracking none cookies none account not needed data location your browser
Questions
Is LabScale really free?
Yes. There is no sign-up and no paywall. Open the app and start working.
Does my data get uploaded?
No. Files you open, tables you type and results you compute stay in your browser. Only optional helpers, such as the Excel reader, are downloaded, and only after you confirm.
Which files can I import?
CSV, TXT and TSV with an import wizard that detects separators, decimal commas, headers, units and dates; Excel workbooks; JSON; HTML tables and XML. You can also paste straight from a spreadsheet.
Can I use my figures in a paper or presentation?
Yes. Graphs export as vector PDF, SVG and EPS or as PNG, JPG, TIFF and WebP; reports export as PDF, Word, HTML and Markdown, and all graphs can go into a PowerPoint file.
How do I choose the right statistical test?
The Stats Advisor looks at your columns, checks assumptions such as normality and equal variances, and recommends tests. Every result shows the numbers behind it.