Free Online Calculators
Finance, math, health, construction, and everyday tools in one searchable catalog.
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Fabric Yardage & Cut Layout Calculator
Lay out rectangular fabric pieces with grain controls. Calculate yardage to buy, check an existing cut and print your cutting worksheet.
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Fence Calculator — Panels, Posts, Gates & Cost
Plan fence panels, shared posts and gate openings for connected or separate runs. Compare material, delivery and installation quotes.
CalculateFence Picket Calculator — Boards, Gaps & Layout
Plan individual fence pickets across unequal bays. See even gaps, inspect board positions, add whole spare boards and print your layout.
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Free Date Calculator — Days Between Dates & Age Calculator
Calculate days between dates, add or subtract days, or find an exact age with weekend controls, clear steps, and instant visual results.
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French Drain Calculator — Gravel, Pipe & Fabric
Plan a French drain with changing ground levels. Estimate gravel, pipe pieces, fabric rolls and your material costs with a live trench profile.
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Grass Seed Calculator — Lawn Areas, Bags & Cost
Plan seed for multiple lawn areas using your product label. Combine new lawns and overseeding, subtract existing seed and buy whole bags.
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Gravel Calculator — Volume, Tons, Bags & Delivery
Estimate gravel for rectangular, circular or measured areas. Compare cubic yards, tons, bags, supplier order increments and delivery costs.
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Grout Calculator — Coverage & Package Purchase Plan
Plan grout for floors, walls and backsplashes. Combine product-specific coverage, keep colours separate, and get whole packages, remainder and an optional cost.
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Insulation Calculator — Packages, Layers & Cost
Plan batts, rolls or loose-fill bags from product-label coverage. Combine surfaces, keep products separate and build a purchase list with your own quotes.
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Laminate Flooring Calculator — Layout, Cartons & Cost
Plan laminate for multiple rooms. Compare row direction, reuse compatible offcuts and calculate separate carton orders with existing stock and your prices.
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Mulch Calculator — Beds, Bags, Bulk & Cost
Plan mulch for multiple garden beds, subtract existing layers and stock, then compare whole bags with bulk delivery using your quotes.
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Ovulation Calculator — Fertile Window & Cycle Calendar
Estimate ovulation, fertile-window and next-period dates from an average cycle or a variable cycle-length range, with a visual calendar and three-cycle forecast.
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