225 chemistry calculators · formula and constants shown
Type a formula. The molar mass, the share of every element and grams-to-moles update as you type, from IUPAC standard atomic weights.
| Element | Atoms | Atomic weight | g/mol | Mass % |
|---|---|---|---|---|
| H hydrogen | 2 | 1.008 | 2.016 | 2.06% |
| S sulfur | 1 | 32.06 | 32.060 | 32.69% |
| O oxygen | 4 | 15.999 | 63.996 | 65.25% |
Standard atomic weights (IUPAC, abridged). How it is worked out
n = m ÷ M
Grams to moles, moles to grams, particles.
63 calculators Open →
c = n ÷ V
Molarity, molality, mg/mL to µM.
24 calculators Open →
C₁V₁ = C₂V₂
C₁V₁ = C₂V₂, dilution factor, serial dilution.
11 calculators Open →
n_B = n_A × b ÷ a
Mole ratios, product mass, percent yield.
36 calculators Open →
Ā = Σ mᵢ × fᵢ
Average atomic mass, isotope mass, Rydberg.
21 calculators Open →
q = m × c × ΔT
Specific heat, half-life, first-order decay.
30 calculators Open →
pmol = ng × 1000 ÷ (bp × 617.96 + 36.04)
DNA moles, ligation ratio, protein molarity.
7 calculators Open →