Supply and Demand Diagram Maker
The supply and demand diagram is the workhorse of IB Economics: almost every microeconomics answer, from market equilibrium to government intervention, starts with these two curves. Examiners expect accurately drawn, fully labelled diagrams with equilibrium price and quantity clearly marked.
Free forever · no account needed · no watermark · exports as SVG, PNG & JPEG
IB EconGraph AI lets you draw one in seconds: describe the market in plain English and let AI plot mathematically consistent curves, or drag lines onto the canvas yourself. Export at full quality with no watermark, free, forever.
What the supply and demand diagram shows
A standard market diagram plots price (P) on the vertical axis and quantity (Q) on the horizontal axis:
- Demand curve (D): downward-sloping, showing the inverse relationship between price and quantity demanded (law of demand).
- Supply curve (S): upward-sloping, showing that producers supply more at higher prices (law of supply).
- Equilibrium (E): the intersection of D and S, determining market price P* and quantity Q*, usually marked with dotted lines to both axes.
- Shifts vs movements: a change in a determinant (income, costs, tastes) shifts the whole curve to D₁/S₁; a price change causes movement along a curve.
- Consumer & producer surplus: the triangles between the curves and the equilibrium price line, often shaded in evaluation answers.
How to draw it in IB EconGraph AI
- Open the editor and pick the "Supply & Demand" template from the Component Library, or type "supply and demand equilibrium for the coffee market" in the AI panel.
- Label both axes (Price / Quantity) and each curve, the editor supports subscripts like D₁ using underscore notation (D_1).
- Mark the equilibrium with an annotated point; enable dotted lines so P* and Q* project onto both axes.
- To show a shift, duplicate the curve, drag it left or right, and relabel (e.g. D to D₁); add arrows or a second equilibrium point E₁.
- Shade consumer or producer surplus with the fill tool if your answer discusses welfare, then export as SVG or PNG.
IA & exam tips
- For an IA commentary, always draw the diagram specific to your article, label the actual good ("Market for lithium") rather than a generic "Good X".
- Use a full title and figure caption (e.g. "Figure 1: Market for lithium after the export ban"), the editor has a dedicated caption field.
- IB markschemes reward accurate labelling above artistic quality: axes, curves, equilibrium values, and the direction of any shift must all be explicit.
Frequently asked questions
Is this supply and demand graph maker really free?
Yes. Unlimited diagrams, every drawing tool, and full-quality SVG/PNG/JPEG export with no watermark are free forever. AI generation is also free with your own Google AI Studio key.
Can the AI draw curve shifts?
Yes, ask for e.g. "show demand increasing for electric cars" and it plots the original curve, the shifted curve, and both equilibria with consistent intersection coordinates.
What export formats can I use in my IA?
SVG (vector, scales perfectly in documents), PNG, and JPEG. All at full quality with no watermark on the free plan.
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