Calculators Bundle
9 free calculators · No sign-up

Free online calculators for everyday decisions

Fast, accurate answers with the formula and a worked example on every page.

PopularCGPA to percentageDeck materialDeck stainFence materialPost-hole concrete
Deck material calculatorLive example25stock boards12 × 10 ft deck · 12 ft boards · 10% waste
Deck surface120 ft²
Board rows22
Estimated cost$375.00
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Home & DIY

Decks, fences, concrete, roofing and lumber.

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Deck material calculatorDecking boards, waste and cost for a rectangular deck.Deck stain calculatorStain quantity from area, coats and coverage.Fence material calculatorPickets, posts and rails for a straight fence run.Post-hole concrete calculatorConcrete bags for round or square post holes.Roof pitch calculatorPitch, angle and sloped length from rise and run.Board foot calculatorBoard feet and total cost for lumber.

Education

CGPA, grades and percentage conversions.

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CGPA to percentage calculatorConvert CGPA to percentage with CBSE, VTU, 10-point or any-scale formulas.SGPA calculatorCalculate semester GPA from course credits and grade points.CGPA from SGPA calculatorCombine semester SGPAs using applicable credits or confirmed equal credits.
How it works

Three steps to a clear answer

  1. Pick a calculatorSearch or browse by category to find the right tool.
  2. Enter your numbersResults update as you type. Switch between metric and imperial any time.
  3. Use the answerSee the formula and a worked example, then download or print your result.
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Guides

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5 min readHow to plan deck materialsStart with the layout, then count the boards.4 min readYour fence materials checklistPosts, rails and pickets, one straight run at a time.4 min readHow much concrete goes in a post hole?Hole volume, post displacement and bag yield.
Why Velour Trends

Calculators you can check

Most online calculators give you a number and nothing else. Every Velour Trends calculator shows the formula it used, a worked example you can follow by hand and the assumptions that could change the answer. If your board, university or product uses a different rule, you can see the difference and choose the right one.

The tools run in your browser, so nothing you type is stored, and you do not need an account. We started with home and DIY projects such as decks, fences, concrete and roofing, added education tools such as the CGPA to percentage calculator, and we keep adding calculators for everyday decisions.