How do you make a supply and demand graph?

Put price on the y-axis and quantity on the x-axis, draw the demand curve sloping down and the supply curve sloping up, and mark the equilibrium where they cross. This maker draws both curves, calculates the equilibrium for you, and lets you shift the curves and export the graph as SVG or PNG — free.

What is the equilibrium point on a supply and demand graph?

The equilibrium is where the demand and supply curves intersect. It gives the equilibrium price (P*) and equilibrium quantity (Q*) — the price at which the quantity buyers want to buy equals the quantity sellers want to sell. The graph drops dashed guide lines to the axes so you can read P* and Q*.

What happens when demand increases?

An increase in demand shifts the demand curve to the right. With supply unchanged, this raises both the equilibrium price and the equilibrium quantity. Use the demand shift buttons to show this — the original curve stays dashed and the new equilibrium is recalculated.

What happens when supply increases?

An increase in supply shifts the supply curve to the right. With demand unchanged, this lowers the equilibrium price but raises the equilibrium quantity. A decrease in supply does the opposite.

What is the difference between a price ceiling and a price floor?

A price ceiling is a legal maximum price; if set below equilibrium it causes a shortage. A price floor is a legal minimum price; if set above equilibrium it causes a surplus. The tool can draw either and shade the resulting shortage or surplus.

Is this supply and demand graph maker free, and can I download it?

Yes. The Supply & demand mode runs entirely in your browser, calculates the equilibrium and shifts precisely, and is free with no image credits used. Export a clean SVG or high-resolution PNG for homework, slides, and exams.

Economics Tool

Supply and Demand Graph Maker with Equilibrium & Shifts

Make a supply and demand graph in seconds. Plot the demand and supply curves, find the market equilibrium (P* and Q*), shift either curve to show changes, add a price ceiling or floor with the resulting shortage or surplus, and export SVG or PNG — free.

Demand & supply curvesAuto-calculated equilibrium (P*, Q*)Shift curves · price ceiling & floorSVG & PNG export — free

Demand curveno shift

Supply curveno shift

Price control

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Supply & Demand Examples

Equilibrium, shifts, and price controls rendered by the exact engine

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Market Equilibrium

Demand and supply cross at the equilibrium price (P*) and quantity (Q*).

equilibriumcurves

Increase in Demand

A rightward demand shift raises both the equilibrium price and quantity.

demand-shiftincrease

Decrease in Demand

A leftward demand shift lowers both the equilibrium price and quantity.

demand-shiftdecrease

Increase in Supply

A rightward supply shift lowers the equilibrium price and raises quantity.

supply-shiftincrease

Price Ceiling → Shortage

A binding price ceiling sits below equilibrium and creates a shortage.

price-ceilingshortage

Price Floor → Surplus

A binding price floor sits above equilibrium and creates a surplus.

price-floorsurplus

What is a supply and demand graph?

A supply and demand graph plots price on the vertical axis and quantity on the horizontal axis. The demand curve slopes downward (people buy more when prices are lower) and the supply curve slopes upward (producers supply more when prices are higher). Where the two curves cross is the market equilibrium — the price (P*) and quantity (Q*) at which the amount buyers want equals the amount sellers offer.

How to draw a supply and demand graph

Label the axes: price (P) on the y-axis, quantity (Q) on the x-axis.
Draw the demand curve sloping down and the supply curve sloping up.
Mark the equilibrium where they intersect, and drop dashed lines to read off P* and Q*.
To show a change, shift the relevant curve left or right and mark the new equilibrium — this generator does the intersection math for you.

Shifts in demand and supply

A shift moves an entire curve. An increase in demand shifts the demand curve right (raising P* and Q*); a decrease shifts it left (lowering both). An increase in supply shifts the supply curve right (lowering P* but raising Q*); a decrease shifts it left. Use the shift buttons to move either curve — the original curve stays dashed and the new equilibrium is recalculated automatically, so you can illustrate events like higher income, new technology, or a supply shock.

Price ceilings, price floors, shortages, and surpluses

A price ceiling is a legal maximum price; when it is set below equilibrium it is binding and causes a shortage (quantity demanded exceeds quantity supplied). A price floor is a legal minimum price; when set above equilibrium it causes a surplus (quantity supplied exceeds quantity demanded). Turn on the price ceiling or floor to draw the control line and shade the resulting shortage or surplus.

The law of supply and demand

The law of supply and demand says that in a competitive market, price adjusts until the quantity demanded equals the quantity supplied. If the price is above equilibrium there is a surplus that pushes prices down; if below, a shortage pushes prices up. The market clears at the equilibrium, which the graph shows as the crossing point of the two curves.

When to use the AI illustration mode

Use the exact Supply & demand mode for microeconomic graphs with precise equilibria and shifts. Switch to AI illustration for related graphs the template does not cover: aggregate demand and aggregate supply (AD–AS), the money market, labor markets, or annotated diagrams showing taxes, deadweight loss, or consumer and producer surplus.