Mole Calculator
Convert between moles, particles, and mass.
Amount of substance
0.9992
molIntroduction
Calculate moles from grams using molar mass, or convert moles to Avogadro's number of particles. Essential for stoichiometry homework and lab prep. Use The Daily Tools' Mole Calculator for private, browser-based processing — no account or server upload required.
What is Mole Calculator?
Mole Calculator helps you convert between moles, particles, and mass. Use it to check chemistry arithmetic after you have identified the substances, balanced equation, units, and assumptions that apply to your problem.
Definition: Mole Calculator is a free, browser-based calculator for convert between moles, particles, and mass.
Formula
n = mass (g) ÷ molar mass (g/mol); N = n × N_A
Calculation steps
- The core formula: n = mass (g) ÷ molar mass (g/mol); N = n × N_A
- Enter your values in the fields above — units and assumptions are under your control.
- The Daily Tools computes the result instantly in your browser using JavaScript.
- Review the result panel for the primary output and supporting breakdown values.
Worked example
Example: amount of water in 36.0 g H₂O
Inputs: Mass = 36.0 g, molar mass of H₂O = 18.015 g/mol
- Divide mass by molar mass: 36.0 ÷ 18.015.
- Keep the result in moles for a reaction-ratio calculation.
- Multiply by Avogadro's constant only if a particle count is required.
36.0 g of water is about 2.00 mol, or 1.20 × 10²⁴ water molecules.
Use cases
- Checking a basic chemistry calculation for coursework or lab preparation
- Showing the formula, units, and intermediate quantities behind a result
- Comparing a calculation with a balanced equation, data table, or measured value
Advantages
- Browser-based processing — entered values and selected files are not sent to our servers
- No account required
- Instant results with a clean, readable interface
- Transparent formula shown on this page
Limitations
- Results depend on the formula, units, significant figures, and chemical data entered.
- A calculator cannot determine whether a reaction equation, chemical formula, or experimental measurement is correct.
- Use appropriate laboratory procedures, safety information, and instructor or supervisor guidance for real experiments.
Frequently asked questions
- Which units should I use?
- Use the units shown by the calculator and keep them consistent throughout the calculation. Convert values before entering them rather than mixing unit systems in one equation.
- How many significant figures should I report?
- Keep guard digits while calculating, then round the final result to match the least precise measured value or the convention required by your course or lab.
- Can this replace checking my chemistry setup?
- No. It checks the calculation from the values you provide. You still need to verify the chemical formula, balanced equation, conditions, and measurement quality.
- Is the Mole Calculator free to use?
- Yes. Mole Calculator on The Daily Tools is completely free, requires no account, and runs entirely in your browser.
- Does The Daily Tools store my inputs?
- No. Your numbers and text never leave your device. The Daily Tools has no backend database for calculator inputs.
- Who should use the Mole Calculator?
- Anyone who needs a clear chemistry calculation and wants to check the assumptions used.
- How accurate is the Mole Calculator?
- Results follow the standard formula shown on this page. They are estimates for planning — not a substitute for professional advice.
- Can I use the Mole Calculator on mobile?
- Yes. The Daily Tools is fully responsive and works on phones, tablets, and desktops.
Sources & references
Key points
- Mole Calculator is a free, browser-based calculator for convert between moles, particles, and mass.
- Formula: n = mass (g) ÷ molar mass (g/mol); N = n × N_A
- Private, browser-only processing
- Private, browser-based processing