🎃 Jack-o'-Lantern Carve Planner
🎃 Jack-o'-Lantern Carve Planner
Plan the carve before the knife goes in: how long the pattern will take, how many candles it needs, how much air the flame gets, and what to check before you light it.
Front view of the design at your chosen width. The preview is a guide, not a stencil — draw it on paper first if you want symmetry.
Carve briefing
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More Halloween tools: pumpkin stencil generator · purée and pie planner · costume generator · the Halloween guide
Where the time estimate comes from, and how the flame gets its air
The timing model. Carve time is fixed prep (lid, scoop, clean the inside) plus pattern transfer plus cutting. Cutting time is the total length of the pattern divided by a cutting speed: about 5 cm a minute with a pumpkin saw, 3 with a craft knife, 2.5 with a paring knife. A detailed stencil adds transfer time because the paper has to be pinned and pricked. Experience multiplies the cutting time — a first pumpkin takes about half as long again.
Why the wall matters. Under 1.5 cm the walls tear and the face collapses within a day; over 4 cm a small saw struggles to turn a corner, and the design needs wider cuts. The planner flags both ends. A thick-walled pumpkin also holds a candle further from the skin of the fruit.
Air and heat. A candle needs oxygen and gives off heat and moisture. A closed pumpkin with a single tealight can starve itself and go out, and the top gets hot enough to scorch. Cut a chimney: a small hole in the lid, behind the stem, lets hot air out and fresh air in. As a screening rule, allow at least 1.5 litres of interior volume per flame, and put the candle in a glass holder so it cannot fall over when the pumpkin is moved.
Fire safety. Never leave a lit pumpkin unattended, keep it away from door curtains, paper decorations and costumes, and use an LED instead anywhere a child might brush past it. Real candles and trick-or-treat costumes are a bad combination: trailing fabric and a low flame at exactly the height of a hem.
Last reviewed: 2026-10-20. A planning aid for a decorative craft; follow the candle maker's instructions and your own fire-safety common sense.