ODD QUESTIONS. USEFUL ANSWERS.
Pick a problem. Move the numbers.
Eight small calculators for real projects and curious decisions.
Find my toolNo sign up. No upload.
Choose a problem
Eight tools. Eight oddly specific problems.
Pizza Size Comparison
Compare total area, usable area and price efficiency between two pizza offers.
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Epoxy Volume Calculator
Estimate resin for a rectangular or circular pour, then round up to packages.
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Candle Wax Calculator
Work out wax, fragrance and reserve for one container or a whole batch.
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Cross Stitch Size Calculator
Turn stitch counts and fabric count into finished and cutting sizes.
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3D Printing Cost Calculator
Separate material, electricity, labor, machine time and failure allowance.
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Pizza Party Calculator
Estimate pizzas, slices, area and budget for adults and children.
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Wedding Drink Calculator
Plan alcoholic and nonalcoholic servings for a wedding or event.
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Screen Time to Books Calculator
Turn a small daily time choice into annual hours and complete books.
Open calculatorFormula and assumptions
Every answer shows its working.
Inputs stay in your browser. Assumptions remain visible and editable.