# Tools

> Small, careful tools for everyday lab work. They run in your browser: no account, no upload, no tracking.

Source: https://khushisingh.in/tools/
Author: Khushi Singh (khushisingh.in). Licence: CC BY 4.0 for text and original illustrations, unless a credit says otherwise.
Evidence labels used on this site: established, strong evidence, emerging, hypothesis, debated. Where a page has Simple, Curious and Expert versions, all three follow.

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Free lab tools

Small, careful tools for everyday lab work. They run in your browser: no account, no upload, no tracking. Each one shows its formulas and sources, so you can check the numbers and cite the method.

- ## [Image lab](https://khushisingh.in/tools/image-lab/)
  ImageJ-style analysis of microscope images.
  Opens TIFF, PNG and JPEG. Works offline once loaded; images stay on your device.
- ## [Lab calculators](https://khushisingh.in/tools/lab-calculators/)
  Molarity, dilutions, centrifuge speed, cell counts, nucleic acids.
  Plain arithmetic with the formulas shown. Nothing is sent anywhere.
- ## [Sequence tools](https://khushisingh.in/tools/sequence/)
  Reverse complement, translation, GC content, primer Tm.
  Paste DNA, RNA or protein. Nothing is sent anywhere.
- ## [Statistics helper](https://khushisingh.in/tools/statistics/)
  Two-group tests, effect sizes and sample size, in plain words.
  Paste two columns of numbers. Nothing is sent anywhere.
- ## [Nuclei counter](https://khushisingh.in/tools/nuclei-counter/)
  Count and measure nuclei in a fluorescence image.
  Opens TIFF, PNG and JPEG. Images stay on your device.
- ## [AlphaFold explorer](https://khushisingh.in/tools/alphafold/)
  Predicted protein structures, mutation scans and figures.
  Fetches public structures from AlphaFold DB only when you ask for a protein.

## About these tools

They are meant for learning, checking and quick everyday work. For a thesis or paper, use them alongside the standard software (Fiji for images, R or a statistics package for analysis), and report the method you used. The Image lab saves every step as an ImageJ macro, so the same analysis can be repeated in Fiji.

Found a wrong number or a missing feature? Please say so through the [contact page](https://khushisingh.in/contact/).