The chemistry lab of the future — 100% in your browser

Chemistry, reimagined in the browser.

Every classic WebQC tool — rebuilt on a real engine, then wrapped in an interface that feels less like homework and more like a sci-fi control panel. Type any reaction, drop in one mass, and watch compute live around it.

118 elements, live data 13 pro chemistry tools Free · private · offline-capable

H₂O water CO₂ carbon Au gold NaCl salt

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Thirteen tools. Zero friction.

Real computation engine inside — not a calculator that needs a tutorial. Hover the reel to pause, drag to pick a bench, then open it.

Interlude Watch one reaction balance itself 4 Fe + 3 O₂ → 2 Fe₂O₃ scroll to run it

4Feiron 3O₂oxygen → 2Fe₂O₃rust

gather the iron

That was the engine — real numbers, live.Drop in one mass and the balancer derives every reactant & product weight in grams, kilograms or milligrams.

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Why it doesn’t feel like a chemistry site

Because it’s designed like a product, not a 2003 homework portal.

Buttery smooth60 fps micro-animations, spring physics on every hover and reveal. Nothing stutters.

Instant answersBalance 3-molecule reactions in under a millisecond. Results animate in as they compute.

Built on real dataStandard atomic weights, electronegativities and 118-element shell model — embedded, offline-ready.

Lab wisdom · peer-reviewed by nobody

Never trust an atom. They make up everything.

— a very suspicious proton

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Elements in the live table

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Pro chemistry tools & engines

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Milliseconds to balance a reaction ~

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Lab coats required

Act III · Nucleosynthesis the table that built the universe 0 / 118 elements

iron. the last ember of a dying star.

Every element, one grid — live.Open a cell: shells, density, electronegativity, phase at 25 °C. 118 in total.

scroll

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Act IV · Acids & Bases every liquid sits on a scale of protons scroll to shift the pH

pH0.00

H⁺ OH⁻

0 · acid7 · neutral14 · alkaline

battery acid

One scale, fourteen powers of ten.Every whole step of pH is ten times stronger or weaker — and Zenthalpy computes it for you: type any [H⁺], [OH⁻], pH or pOH and get the other three instantly.

Home

Interactive Periodic Table

Hover to preview · click any element for its full profile with animated electron shells · filter by category or search by name, symbol or number.

◈ Hover any tile to preview its data here — or click to open its full card.

Category colors · tiles are arranged in the modern 18-column layout, with the two f‑block series pulled out beneath rows 6–7 (like every proper periodic table).

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Molar Mass Calculator

Type any formula — with parentheses, charges and hydrates — and get its molar mass plus a live per-element breakdown and instant mole conversions.

Try

Formula

Chemical formula *

Amount you actually have (grams, optional) Leave empty to just see the molar mass. Fill it and the result panel converts it to moles, molecules & atoms.

Results

Your result will land hereNo page reloads, no pop-up ads, no nonsense.

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Equation Balancer

Type any reaction — the solver balances it atom-by-atom with a full matrix engine and returns the smallest whole-number coefficients.

Try

Reaction

Unbalanced equation *

Balanced equation

Waiting for a reaction…Hit “Balance it” or press Enter.

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Limiting Reagent & Yield

Tell it how many grams of each reactant you mixed. Zenthalpy balances the equation, finds who runs out first, and predicts the theoretical yield.

Try

Reaction & amounts

Equation *

Analysis

Enter amounts to beginReactant amount boxes appear automatically after you type the equation.

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Empirical & Molecular Formula

Feed it percent composition (or a molecular formula) — get the simplest whole-number ratio. Add the true molar mass to also unlock the molecular formula.

Composition

Molecular formula (alt. input)

Molar mass if known (for molecular formula)

Formula

Ratio engine idleEnter percent composition or a formula.

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Percent Composition

The mass of every element in a compound as a share of the whole — with animated bars that make the ratios impossible to forget.

Try

Compound

Formula *

Breakdown

Nothing to slice yetType a compound and split it apart.

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Oxidation States

Assign oxidation numbers to every atom in a formula or polyatomic ion using electronegativity-priority rules — instantly, with the arithmetic shown.

Polyatomic ions are detected automatically (e.g. type SO4 or MnO4 and the charge is inferred). For anything else, type the net charge like 1- or 2+.

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Species

Formula *

Net charge (if ion)

Assignments

No atoms on the boardEnter a formula, like K2Cr2O7 or MnO4 1-.

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Unit Converter

Mass, amount, temperature, energy, pressure, volume and concentration — converted live as you type. Click any result to copy it.

Convert

Live results

Pick a category and typeEvery unit of the category appears below, clickable to copy.

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Solution Dilution

The old lab standby — M₁V₁ = M₂V₂. Fill any three of the four boxes and Zenthalpy solves the fourth, then tells you the dilution factor.

Try

Dilution

C₁ — stock conc. (mol/L)

V₁ — stock volume (L)

C₂ — final conc. (mol/L)

V₂ — final volume (L)

Result

Awaiting your numbersLeave exactly one box empty.

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pH · pOH · Concentration

Type any one of [H⁺], [OH⁻], pH or pOH — get the other three plus an acid/base verdict on a live color meter.

Try

Known value

[H⁺] mol/L

[OH⁻] mol/L

pH

pOH

Spectrum

No data yetEnter any one of the four quantities.

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Ideal Gas Law

PV = nRT. Fill any three of pressure, volume, moles and temperature — the fourth pops out. R = 0.08206 L·atm·mol⁻¹·K⁻¹.

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Gas state

Pressure P (atm)

Volume V (L)

Amount n (mol)

Temperature T (K)

Result

Waiting on the flask…Fill three variables, leave one blank.

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Solution Concentration

Molarity with the full lab sheet. Solute as a formula or a name, plus any two of mass · volume · molarity — Zenthalpy fills the blank, then ppm, molality and a volumetric-flask recipe.

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Solution

Solute formula or name *

Solute mass (g)

Final volume

Molarity (mol/L)

Formula + any two boxes. Volume defaults to mL.

Result

No beaker yetEnter a solute + two quantities to prepare a solution.

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Density & the “Will it float?” lab

Name a real substance to look up ρ, or give any two of mass · volume · density. Zenthalpy fills the blank, converts units, and says whether it floats in water.

Try

Object

Substance (optional)

Mass (g)

Volume (mL / cm³)

Density (g/mL)

Any two numbers, or a real substance plus one number. Invalid formulas are refused.

Verdict

Waiting for matter…Enter mass & volume (or mass & density, or volume & density).

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Experimental Lab

Two benches — geometrically frustrated magnets, and a general inorganic / teaching-lab hall. Pick a card.

Grow · Characterise · Understand

Geometrically Frustrated Magnets,
from precursor to single crystal.

Type a target — a kagome quantum spin-liquid, a pyrochlore spin-ice, a frustrated spinel — and get its identity, frustration physics, a solver-verified formation route and a full, compound-specific laboratory protocol.

Compoundscatalogued

Protocolsstage-pipeline

Routeswet & solid-state

Inside the Lab

01 · Weigh & dry

Stoichiometric precursors

Weigh to ±0.1% from the balanced route — hygroscopic and air-sensitive salts are handled fast or in a glove-box.

02 · Grind & mix

Agate-mortar homogenisation

Even, compound-specific grind for a single phase; wet-mix with isopropanol for uniformity.

03 · Pelletise

Press at ~50–100 MPa

A dense, uniform pellet reacts cleanly and cuts surface contamination.

04 · Sinter & fire

Soak at the target temperature

Ramp, dwell and slow-cool exactly per the animated firing profile.

Synthesis console furnace ready

Target planner

What compound do you want to grow? *

Type a target formula — a frustrated magnet you want to synthesise experimentally.

Frustrated-magnet targets

Formulas are plain text: ZnCu3(OH)6Cl2 · Dy2Ti2O7 · SrCu2(BO3)2. Recognised phases get a full dossier; any real formula still gets molar mass, composition, classification and a clean ceramic route to fall back on.

Add a compound above, then click here to download a self-contained Zenthalpy.html with it built in.

Your synthesis dossier lands hereEnter a frustrated-magnet target and press Plan. You'll get its identity, frustration physics, a balanced formation route, key literature and the full protocol suite — safety, grinding, firing, process & cleaning.

Analysis console · Cu Kα / SQUID / PPMS

Analysis Lab

Verify your measured sample against simulated physics — index powder-XRD, fit susceptibility to Curie–Weiss, and separate phonon from magnetic heat capacity.

library41phases

modeverifyexp vs sim

beam armed

1Paste your measured data

2Pick technique · run fit

3Read the verification verdict

Powder X-ray diffractionCu Kα · index observed peaks against the built-in frustrated-phase library

Observed 2θ reflections (°) — one per line or comma separated

data buffer · 2θready

2θ tolerance (°)

Radiation

How it works

The lab indexes your observed 2θ list against every candidate frustrated phase at once, ranks them, draws the simulated diffractogram and — for cubic phases — refines the lattice parameter a from your peaks.

Heads-up: peak positions alone can’t always separate closely related phases. Treat the top candidate as a strong suggestion and confirm with your known chemistry + a couple of unique lines.

Identification report lands herePaste ≥3 observed peaks and press Identify phase.

Simulated reference patterns are typical/idealised Cu-Kα sets for teaching. Unmatched observed peaks are flagged red — they are the tell-tale of an impurity or second phase.

Precipitate · Distil · Calcine

The rest of inorganic chemistry, from lime to aspirin.

Salts, pigments, vitriols, teaching organics, industrial acids. If a compound has more than one legitimate route, pick the one you will actually run — the protocol follows that route, not a furnace program.

Catalogueteaching phases

Protocolsroute-true

Analysisidentity · TGA · FTIR

General Inorganic Lab · synthesis

Classic compounds

Salts, oxides, pigments, lime, vitriols, teaching organics, industrial acids. If a compound has more than one legitimate route, pick the one you will actually run — the protocol follows.

catalogue—phases

modeplanroute + protocol

Formula or common name

Teaching-lab targets

Formulas are plain text. Several cards (CaCO₃, Fe₂O₃, TiO₂, aspirin, Na₂CO₃…) offer more than one route after you press Plan.

Plan a classic compoundPick a chip or type a formula.

General Inorganic Lab · identity / TGA / FTIR / colour

Teaching analysis

Everyday inorganics are checked by composition, thermal mass-loss, infrared fingerprint and solution colour — not Curie–Weiss. Powder XRD for frustrated magnets lives on the other bench.

catalogue—phases

modeverifyteaching checks

IdentityMolar mass and atom counts from the formula

Formula

Teaching checks

What this is

A sanity check that the formula you think you made is the formula you typed — mass, atom % , and the catalogue blurb.

Composition lands hereType a formula or pick a chip, then Compose.

Chemistry, reimagined in the browser.

Thirteen tools. Zero friction.

Why it doesn’t feel like a chemistry site

Got an element of curiosity?

Interactive Periodic Table

Molar Mass Calculator

Formula

Results

Equation Balancer

Reaction

Balanced equation

Limiting Reagent & Yield

Reaction & amounts

Analysis

Empirical & Molecular Formula

Composition

Formula

Percent Composition

Compound

Breakdown

Oxidation States

Species

Assignments

Unit Converter

Convert

Live results

Solution Dilution

Dilution

Result

pH · pOH · Concentration

Known value

Spectrum

Ideal Gas Law

Gas state

Result

Solution Concentration

Solution

Result

Density & the “Will it float?” lab

Object

Verdict

Experimental Lab

Frustrated Magnets

General Inorganic Lab

Geometrically Frustrated Magnets,from precursor to single crystal.

Target planner

Analysis Lab

The rest of inorganic chemistry, from lime to aspirin.

Classic compounds

Teaching analysis

Geometrically Frustrated Magnets,
from precursor to single crystal.