IGCSE Important Formulas (Physics, Chemistry, Add Maths, Maths)

Download IGCSE Formula Sheets & Key Equations by Hodu Academy (Cambridge Syllabus 2025)

Be exam-ready for IGCSE! Find all the most important formulas and definitions for Physics, Chemistry, Maths & Additional Maths – mapped for Cambridge IGCSE 2025. Each formula sheet includes key equations, units, constants, and quick revision tables.
Perfect for last-minute revision, school boards, international exams & Olympiads.

Table of Contents:

• IGCSE Physics Formulas
• IGCSE Chemistry Formulas
• IGCSE Additional Maths Formulas
• IGCSE Maths Formulas
• Quick Unit Conversions
• Common Mistakes to Avoid
• See Also: CBSE Important Formulas

All Key Equations for Cambridge IGCSE Physics (0625)

Download the full Physics formula PDF for chapters including: motion, forces, energy, waves, electricity, magnetism, thermal physics, and more.

Formula / Law	Definition / Notes
v = s / t	Velocity = displacement / time
F = m × a	Force = mass × acceleration (Newton's 2nd Law)
P = VI	Electrical Power = Voltage × Current
E = mcΔθ	Heat Energy = mass × specific heat × temperature change

Quick Reference for Cambridge IGCSE Chemistry (0620)

Download all chemistry formulae for chapters: atomic structure, moles, stoichiometry, acids-bases, redox, electrolysis, organic and environmental chemistry.

Formula / Law	Definition / Notes
Moles = Mass / Mr	Mr = Relative molecular mass
C₁V₁ = C₂V₂	Dilution of solutions (concentration × volume)
pH = -log₁₀[H⁺]	Acidity / basicity formula
% Yield = (Actual / Theoretical) × 100	Percent yield in chemical reactions

Essential Add Maths Equations for Cambridge IGCSE

Additional Maths includes deeper algebra, calculus, trigonometry, vectors, and transformations – all in one download.

Formula / Law	Definition / Notes
dy/dx = derivative of y with respect to x	Differentiation, slope of curve
∫ f(x) dx	Indefinite integral, area under curve
sin²θ + cos²θ = 1	Trigonometric identity
a² + b² = c²	Pythagoras’ theorem

Core & Extended Maths for Cambridge IGCSE

Includes algebra, arithmetic, geometry, statistics, probability, trigonometry, graphs & more. Suitable for Core & Extended syllabi.

Formula / Law	Definition / Notes
Area of Triangle = ½ × base × height	Basic geometry formula
Quadratic Equation: x = [-b ± √(b²-4ac)]/2a	Roots of ax²+bx+c=0
Pythagoras: a² + b² = c²	In a right triangle, c = hypotenuse
Mean = (sum of values) / (number of values)	Statistical mean

To Convert	Multiply By	Result
cm → m	0.01	meter (m)
g → kg	0.001	kilogram (kg)
kJ → J	1000	joule (J)
cm² → m²	0.0001	square meter (m²)
°C → K	+273.15	kelvin (K)
dm³ → m³	0.001	cubic meter (m³)
cm³ → dm³	0.001	cubic decimeter (dm³)

Remember: Always check your units before you start a calculation!

• Wrong unit conversion: Always convert all units to SI before using formulas (e.g., cm → m, g → kg).
• Forgetting to square/cube units: For area (m²), volume (m³), check your conversion powers.
• Sign errors: In velocity/acceleration, check positive/negative directions!
• Omitting constants: Like ‘g = 9.8 m/s²’ in Physics, ‘R’ in Chemistry gas law questions.
• Mistaking significant figures: Give answers to the correct number of significant figures as per question!
• Not labelling diagrams/calculations: Write units in every answer; draw neat diagrams where needed.
• Algebraic rearrangement errors: Check your transposition and factorisation in maths/algebra questions.
• Calculator errors: Double-check your brackets, order of operations (BODMAS), and exponent entries.

Tip: After every answer, quickly check units, calculation and significant figures!

Download, print, and keep these formulae handy for school, tuition, or home revision. For more IGCSE guides or to ask doubts, Contact Hodu Academy.

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