Free Online Calculators
Finance, math, health, construction, and everyday tools in one searchable catalog.
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Calorie Calculator — Daily Calorie Intake & Macros
Calculate BMR, TDEE, and daily calories for weight loss, maintenance, or muscle gain in metric or imperial units, with a visual macro breakdown.
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Candle Wax Calculator
Plan mixed candle sizes, weigh wax and fragrance, and work out complete batches from your ingredient stock.
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Carpet Calculator — Roll Length, Layout & Cost
Compare two carpet layouts, allow for edge trimming, and estimate roll length and costs from your supplier’s quotes.
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Carport Calculator — Layout, Materials & Cost
Plan a freestanding steel carport with an editable post grid, roof, sheets, framing lengths, footings, fasteners and a transparent preliminary material budget.
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Circle Skirt Calculator — Pattern & Fabric
Draft quarter to double-circle skirts with seam allowances, a waistband and fabric layout. Print an actual-size panel on A4 or Letter paper.
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Concrete Calculator — Cubic Yards, Bags & Cost
Enter a slab, footing, column, stair, or mixed pour and see concrete cubic yards immediately, then refine waste, truck loads, bags, and cost.
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Continuous Bias Binding Calculator
Plan continuous bias tape from a fabric square. See full-width bands, discarded fabric and the square needed for your required length.
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Debt Payoff Calculator
Compare debt avalanche and snowball with the same budget. See what to pay each creditor each month, add one-time extras and download your plan.
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Deck Board Calculator — Cut List, Stock Lengths & Cost
Compare board directions and stock lengths for a rectangular deck. Count cut pieces, gaps, saw kerf, spare boards and quoted material cost.
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Diagonal Quilt Backing Calculator
Plan a diagonal quilt backing with a rounded cut length, illustrated slide and seam, straight-panel comparison and printable cutting plan.
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Dry Well Calculator — Storage, Pit Size & Drain Time
Size or check a residential dry well from roof runoff, rainfall, storage media, pit dimensions and a measured infiltration rate. Compare storage, drain-down, excavation, fabric, modules and editable cost.
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Drywall & Plasterboard Calculator — Sheets & Cost
Plan drywall or plasterboard for one or several rooms. Choose US or metric board sizes, separate walls and ceilings, subtract openings and price your order in USD or GBP.
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