# Construction Calculator App: Every Calculator in Chippy Tools A construction calculator app for concrete, gravel, stairs, decking, roof pitch and set-out. Metric or imperial, and it works offline on iOS and Android. - Canonical HTML: https://www.chippy.tools/features/ - Publisher: Chippy Tools - Language: en - Updated: 2026-09-13 # Every calculator in Chippy Tools Free to download. Baluster Spacing is included free. [Try every Pro calculator for 7 days](https://www.chippy.tools/free-trial/) with no card required. [See current plans](https://www.chippy.tools/pricing/). A construction calculator app for concrete, stairs, decking and set-out. Metric or imperial, and every calculator works offline. [![Download on the App Store](https://www.chippy.tools/images/download-badges/app-store/en.svg)](https://apps.apple.com/app/apple-store/id1579138717?pt=1325369&ct=chippy.tools&mt=8) [![Get it on Google Play](https://www.chippy.tools/images/download-badges/google-play/en.png)](https://play.google.com/store/apps/details?id=tools.chippy&referrer=utm_source%3Dchippy.tools%26utm_medium%3Dwebsite) ## Concrete & groundwork [**Concrete Calculator**](https://www.chippy.tools/features/concrete-calculator/) [**Gravel Calculator**](https://www.chippy.tools/features/gravel-calculator/) [**Soil Calculator**](https://www.chippy.tools/features/soil-calculator/) [**Asphalt Calculator**](https://www.chippy.tools/features/asphalt-calculator/) ## Stairs & framing [**Stair Calculator**](https://www.chippy.tools/features/stair-calculator/) [**Raked Wall Calculator**](https://www.chippy.tools/features/raked-wall-calculator/) [**Roof Pitch & Rafter Calculator**](https://www.chippy.tools/features/roof-pitch-calculator/) [**Baluster Spacing Calculator**](https://www.chippy.tools/features/baluster-spacing-calculator/) ## Decking & outdoor [**Decking Calculator**](https://www.chippy.tools/features/decking-calculator/) [**Fence Picket Calculator**](https://www.chippy.tools/features/fence-picket-calculator/) [**Wainscoting Calculator**](https://www.chippy.tools/features/wainscoting-calculator/) ## Set-out & measuring [**Check Square Calculator**](https://www.chippy.tools/features/check-square-calculator/) [**Diagonal Calculator**](https://www.chippy.tools/features/diagonal-calculator/) [**Triangle Calculator**](https://www.chippy.tools/features/triangle-calculator/) [**Dumpy Level Calculator**](https://www.chippy.tools/features/dumpy-level-calculator/) [**Equal Spacing Calculator**](https://www.chippy.tools/features/equal-spacing-calculator/) [**Running Measurements Calculator**](https://www.chippy.tools/features/running-measurements-calculator/) Pick the job, not the formula. Each calculator above takes the measurements you already have on the tape and returns the number you're about to act on — volume to order, riser height to mark, spacing that lands evenly on both ends. Chippy Tools started as a set of calculators one carpenter kept re-deriving on the back of a timber offcut. It’s now a full set of them, in one app, built around the way a job actually runs rather than the way a maths textbook is organised. Each calculator asks for the measurements you already have on the tape and gives back the number you’re about to act on — cubic metres to order, riser height to mark out, picket spacing that lands evenly on both ends. There’s no unit conversion step, no formula to remember, and no working out whether the answer came back in the units you asked for. Everything runs on the device. That means the calculators are quick, they don’t hesitate on a bad connection, and they keep working when there’s no connection at all. Pick a calculator from the list above to see what it handles, the formula behind it, and worked examples in both metric and imperial. ## Try Chippy Tools Download Chippy Tools and start calculating in seconds. Works offline, supports metric and imperial. [![Download from the App Store](https://www.chippy.tools/images/download-badges/app-store/en.svg)](https://apps.apple.com/app/apple-store/id1579138717?pt=1325369&ct=chippy.tools&mt=8) [![Download on Google Play](https://www.chippy.tools/images/download-badges/google-play/en.png)](https://play.google.com/store/apps/details?id=tools.chippy&referrer=utm_source%3Dchippy.tools%26utm_medium%3Dwebsite) ## Construction calculator questions Can't find what you need? [Contact us](https://www.chippy.tools/contact/) and we'll point you at the right tool. What is a construction calculator app? A construction calculator app replaces the tape, notepad and phone calculator you'd otherwise juggle on site. Instead of remembering a formula, you pick the job — a slab, a flight of stairs, a deck — enter the measurements you already have, and get the quantity, spacing or cut list you need. Chippy Tools bundles these calculators into one app so you're not hunting for a different tool every time the job changes. What calculators are in Chippy Tools? They're grouped into concrete and groundwork, stairs and framing, decking and outdoor, and set-out and measuring. Every calculator with a guide on this site is listed on this page, and each guide explains the formula it uses and the numbers it expects. Do the calculators work in metric and imperial? Yes. Every calculator accepts both, and you can switch units at any point without re-entering your measurements. Imperial input takes feet and inches with fractions, so you can type what's written on your tape rather than converting it in your head first. Do I need an internet connection to use them? No. All the maths runs on the device, so the calculators work in a basement, in a lift shaft, or on a site with no reception. Nothing you enter is uploaded to be calculated. Which calculator should I use for a concrete slab? The concrete calculator. It handles slabs, footings, post holes and columns, and returns the volume plus a bag count if you're mixing on site rather than ordering a truck. If you're working out how much fill goes under the slab, the gravel and soil calculators cover that. Is Chippy Tools free? The app is free to download on iOS and Android. Baluster Spacing is included free; Pro unlocks the full toolkit. [Try every Pro calculator free for seven days](https://www.chippy.tools/free-trial/), or [compare current plans](https://www.chippy.tools/pricing/). ## Page directory - [Asphalt Calculator: Estimate Materials for Your Paving Project](https://www.chippy.tools/features/asphalt-calculator/index.md): Estimate asphalt materials for paving projects with our free calculator. Plan driveways, parking lots, and roads with accurate tonnage and coverage. - [Baluster Spacing Calculator](https://www.chippy.tools/features/baluster-spacing-calculator/index.md): Easily calculate baluster spacing with Chippy Tools. Avoid regulation issues. Get the app for iOS & Android. - [Check Square Calculator: Diagonal Check for Foundations & Decks](https://www.chippy.tools/features/check-square-calculator/index.md): Verify a foundation, deck, or room is square by comparing its measured diagonal to the calculated diagonal. Chippy Tools handles Pythagoras in metric or imperial on iOS and Android. - [Concrete Calculator: Slabs, Post Holes & Columns](https://www.chippy.tools/features/concrete-calculator/index.md): Calculate concrete volume for slabs, post holes, footings, and columns. Input metric or imperial units for accurate results on iOS and Android. - [Decking Calculator: Boards, Joists, Bearers & Screws](https://www.chippy.tools/features/decking-calculator/index.md): Calculate deck boards, joists, bearers, and screws for any rectangular deck. Chippy Tools handles area, linear metres, and material counts in metric or imperial on iOS and Android. - [Diagonal Calculator: Find Rectangle & Square Diagonals](https://www.chippy.tools/features/diagonal-calculator/index.md): Quickly find diagonal lengths for rectangles and squares with Chippy Tools. Powered by the Pythagorean theorem for carpentry projects on iOS and Android. - [Dumpy Level Calculator: Fast Reduced Level Calculations](https://www.chippy.tools/features/dumpy-level-calculator/index.md): Calculate reduced levels fast with our free dumpy level calculator. Perfect for surveyors and tradies measuring heights with a dumpy or automatic level on site. - [Equal Spacing Calculator](https://www.chippy.tools/features/equal-spacing-calculator/index.md): Calculate equal spacing effortlessly for balusters, posts, shelves, and more. Switch between metric and imperial for perfect measurements every time. - [Fence Picket Calculator: Picket Count, Spacing & Posts](https://www.chippy.tools/features/fence-picket-calculator/index.md): Calculate fence pickets, gaps, and post spacing for any fence run. Chippy Tools handles the math in metric or imperial, on iOS and Android. - [Gravel Calculator: Estimate Volume, Tonnage & Coverage](https://www.chippy.tools/features/gravel-calculator/index.md): Calculate gravel volume and tonnage accurately with Chippy Tools. Input metric or imperial units for driveways, pathways, and bases on iOS and Android. - [Raked Wall Calculator: Stud Lengths & Angles Made Easy](https://www.chippy.tools/features/raked-wall-calculator/index.md): Calculate raked wall stud lengths and angles easily with Chippy Tools. Ensure precision and structural integrity for your projects on iOS and Android. - [Roof Pitch & Rafter Calculator: Rise, Run, and Rafter Length](https://www.chippy.tools/features/roof-pitch-calculator/index.md): Calculate roof pitch, rafter length, and rise over run for any roof. Chippy Tools handles 4/12, 6/12, 12/12 and any custom pitch in metric or imperial, on iOS and Android. - [Running Measurements Calculator](https://www.chippy.tools/features/running-measurements-calculator/index.md): Simplify running measurements with Chippy Tools' Calculator. Get the app for iOS & Android. Contact for expert solutions. - [Soil Calculator: Estimate Volume for Gardens & Beds](https://www.chippy.tools/features/soil-calculator/index.md): Calculate soil volume accurately for raised beds, gardens, and landscaping projects. Input metric or imperial dimensions on iOS and Android. - [Stair Calculator: Stringer, Rise, Run & Treads](https://www.chippy.tools/features/stair-calculator/index.md): Calculate stair stringer length, rises, goings, and treads for any staircase — including deck stairs and stairs with a landing. Metric or imperial, on iOS and Android. - [Triangle Calculator: Sides, Angles, Hypotenuse & Miter](https://www.chippy.tools/features/triangle-calculator/index.md): Calculate right triangle sides, angles, hypotenuse, and miter angles. Chippy Tools handles Pythagoras, trig functions, and 45-45-90 / 30-60-90 specials in metric or imperial. - [Wainscoting Calculator: Panel Spacing, Stiles & Rails](https://www.chippy.tools/features/wainscoting-calculator/index.md): Calculate wainscoting panel widths, stile spacing, and rail heights for any wall. Chippy Tools handles the math in metric or imperial, on iOS and Android. ## Other languages - [es](https://www.chippy.tools/es/features/index.md) - [de](https://www.chippy.tools/de/features/index.md) - [fr](https://www.chippy.tools/fr/features/index.md) - [hi](https://www.chippy.tools/hi/features/index.md) - [hr](https://www.chippy.tools/hr/features/index.md) - [id](https://www.chippy.tools/id/features/index.md) - [ja](https://www.chippy.tools/ja/features/index.md) - [ko](https://www.chippy.tools/ko/features/index.md) - [nb](https://www.chippy.tools/nb/features/index.md) - [pl](https://www.chippy.tools/pl/features/index.md) - [pt](https://www.chippy.tools/pt/features/index.md) - [ru](https://www.chippy.tools/ru/features/index.md) - [sv](https://www.chippy.tools/sv/features/index.md) - [ur](https://www.chippy.tools/ur/features/index.md) - [zh](https://www.chippy.tools/zh/features/index.md) - [vi](https://www.chippy.tools/vi/features/index.md)