Free AI-Assisted

µg/mL to nM Calculator & Lab Unit Converter

Convert µg/mL to nM, OD600 to cells/mL, and dilutions in one workspace—no account. Built-in AI agent assistant support.

Open tool workspace

Need help with bioinfo analysis? See our bioinformatics services.

Key facts

Key facts about µg/mL to nM Calculator & Lab Unit Converter
FactValue
ModesMolarity, OD600 / Cells, Dilution, Unit Converter (tabs)
Compound library300+ searchable reagents and proteins (fuzzy search)
OD organisms15 presets (E. coli K-12, S. cerevisiae, B. subtilis, CHO-K1, HEK293, Custom, and others)
Concentration unitsM, mM, µM, nM, mg/mL, µg/mL, ng/mL, µg/µL, ng/µL, %
Mass / volume unitspg–kg; µL, mL, L
DilutionC₁V₁=C₂V₂ — leave one field empty to solve
Calculation historyLast 20 runs in browser; Export CSV
Runs in browserYes — no install
Account requiredNo

What it does

Mid-experiment unit math forces tab-switching between vendor calculators—each handles one conversion, none bundles molecular weight lookup or species-aware OD600 uncertainty. This µg/mL to nM calculator chains mass, molarity, OD600, and C₁V₁ dilution in one browser workspace with live results as you type.

Use Compound search (optional) to auto-fill Molecular weight (Da), or type MW yourself. On Molarity, enter Mass and Volume; on OD600 / Cells, enter an OD600 reading and pick Organism from 15 presets with uncertainty ranges; on Dilution, leave one C₁V₁ field empty to solve; on Unit Converter, swap mass, molar, volume, or cell-density units. Chain results to the next tab, Copy a formatted record, or Share URL—no account.

Why researchers use it

  • Stop switching between vendor calculators mid-prep
  • Convert ng/mL or µg/mL to nM without a separate MW lookup
  • See OD600 uncertainty ranges for your organism
  • Solve dilution for any missing concentration or volume
  • Chain OD reading to working concentration to dilution
  • Paste shareable calculation records into an ELN

Best for

  • Protein and small-molecule µg/mL to nM conversions
  • Bacterial, yeast, and mammalian OD600 to cells/mL
  • Quick C₁V₁ dilution before pipetting
  • Western, ELISA, or cell-culture concentration checks
  • Handing off a result to the next prep step without retyping

When to use this vs alternatives

Choose this tool when mass, molar, OD600, and dilution math must chain in one browser tab with shareable state. Use the Molarity Solution Calculator when weighing powder, correcting hydrate notation or bottle purity, or building a serial dilution table before detailed pipette planning. Use the Serial Dilution Planner when you need pipette-aware rounding or 96/384-well plate maps. Use the Molecular Mass Converter for nucleic-acid OD260 batch paste or sequence-specific extinction—not general µg/mL to nM swaps. Tocris or VectorBuilder still fit when you only need one isolated conversion and do not need chaining.

What makes it different

Most free lab calculators return a single number without molecular weight lookup, species-aware OD ranges, or a way to send that result to the next step—forcing tab-switching and transcription errors mid-experiment.

Tocris handles mass↔molar only with manual MW. VectorBuilder OD600 is E. coli–centric with no downstream dilution. GraphPad QuickCalcs lacks biology-specific unit chaining or shareable state. This browser tool combines four conversion modes with 300+ compound search, 15 organism OD presets with uncertainty ranges, solve-any C₁V₁ dilution, cross-tab chaining, local history, and share links—no install or account.

How to get started

  1. Open the workspace; optionally search Compound search (optional) or enter Molecular weight (Da).
  2. Select a tab: Molarity, OD600 / Cells, Dilution, or Unit Converter.
  3. Enter values in the input panel; review the live Result panel and any warnings.
  4. Click a chain link such as → Use as dilution stock (C₁) to pre-fill the next tab.
  5. Click Copy or Share URL to save the calculation for your ELN.
  6. Open History (N) to reload a past run or Export CSV from the history drawer.

Frequently asked questions

How do I convert µg/mL to nM?
Molarity in nM equals mass concentration in µg/mL times 1,000 divided by molecular weight in g/mol (Da). Open the Unit Converter tab, set From to µg/mL and To to nM, enter your value, and fill Molecular weight (Da)—or search a compound to auto-fill MW. Results update as you type. Chain the result to Dilution with one click.
How do I convert OD600 to cells/mL?
Cell density equals OD600 multiplied by a strain-specific conversion factor. On the OD600 / Cells tab, enter your OD600 reading and select Organism—for E. coli K-12 the preset is about 8×10⁸ cells/mL per OD unit. The result shows cell density plus a literature-based Range. Override with Custom factor if you have a local calibration.
What OD600 value is in the linear range?
Spectrophotometer readings are most reliable when OD600 stays below about 0.8 for many bacterial cultures. Above that, scatter and crowding skew the reading. This tool shows an amber warning when OD600 exceeds 0.8: dilute your sample and re-measure rather than trusting the converted cell count.
How does the Dilution tab solve C₁V₁=C₂V₂?
Enter Stock concentration (C₁), Stock volume (V₁), Target concentration (C₂), and Final volume (V₂) with unit dropdowns. Leave exactly one field empty—the tool solves for that unknown and shows diluent volume when stock volume is the answer. Stock concentration must exceed target; inline warnings flag invalid inputs.
Can I chain results between tabs?
Yes. After a valid calculation, click a chain link such as → Use as dilution stock (C₁) or → Open in Unit Converter. One click switches tabs and pre-fills the relevant field so you can continue OD → concentration → dilution without retyping.
How do share links and calculation history work?
Share URL copies a link with your tab, inputs, and units encoded in the URL hash. Copy writes a formatted text block with inputs and result. History (N) stores your last 20 calculations in browser local storage; reload any entry or Export CSV from the Calculation history drawer. No account is required.

Client source code & registry

Open tool workspaceBack to tools

Last updated . Pepkio builds free lab calculators alongside bioinformatics CRO services.