calcs.homes

Everyday & hobby calculators

17 free tools that don't fit a single trade — furniture fit, pricing, gardening, sewing, and quick household math.

Markup Calculator
Selling price, markup %, and margin % from any two of the three.
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Aquarium Calculator
Tank volume in gallons or liters, plus water weight.
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Dilution Ratio Calculator
Exact concentrate and water amounts for any ratio.
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Plant Spacing Calculator
How many plants fit a garden bed, laid out in rows.
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Circle Skirt Calculator
Waist radius, hem radius, and fabric width for sewing.
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Flag Calculator
A well-proportioned flag size for your flagpole height.
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Kitchen Remodel Cost CalculatorPopular
A rough budget range by kitchen size and finish tier.
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TV Mounting Height Calculator
Ideal mount height plus top and bottom edges.
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Desk Height Calculator
Ergonomic seated desk and chair seat height.
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Standing Desk Height Calculator
Standing desk height and monitor eye-level position.
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Fabric Calculator
Yardage needed from area and fabric bolt width.
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Will It Fit Through the Door?
Check furniture against a doorway, straight or at an angle.
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Furniture Resale Value Calculator
Depreciated resale value from price, age, and condition.
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Room Size Calculator
Square footage and how it compares to typical room sizes.
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Bean Bag Filler Calculator
Filler volume needed to refill or top off a bean bag.
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Ring Size Calculator
US ring size from a finger circumference or diameter measurement.
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Shoelace Length Calculator
Right lace length by eyelet count and lacing style.
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