Calculators that answer the whole question
Cut lists with the joinery worked out. Layouts you can build from. Every number traced to where it came from, and a sheet you can print and take to the bench.
Woodworking
Cut lists, joinery and glue-ups, worked out for the material actually on the bench.Cabinet Cut List CalculatorEvery part of a cabinet carcass dimensioned for the material you are actually using, with the pocket-hole schedule, the dado sizes, the doors and the shelves.Glue-Up Clamp CalculatorHow many clamps an edge-to-edge glue-up needs, how far apart they go, whether it needs cauls, and how long to leave it in the clamps.Span and Sag CalculatorHow much a shelf, bench top, joist or beam will sag under its load, whether that is within a limit you choose, whether it is strong enough, and the longest span or heaviest load that stays within it.Board Feet and Lumber Order CalculatorBoard feet for a list of parts, exactly and as the yard will tally them, with a waste allowance and a price per board foot, so you know what to ask for and what it will cost.Wood Movement CalculatorHow much a board will shrink and swell across the year where it will live, and the gap, slot or groove depth the joint needs so it can move without splitting.
Ballistics
Where a bullet goes: zeroes, holds and wind, worked out from the load and the sight.Zero CalculatorPick a zero distance and see where the bullet sits against your line of sight at every range, how far the wind moves it, and the holds in inches, MOA and mils.Effective Range CalculatorHow far a load still does its job: where the bullet stops expanding, where the energy falls below what you need, where the wind moves it further than the target is wide, and which of those runs out first.
Landscaping
What to put down and how much: fertilizer rates worked out from the bag.Fertilizer CalculatorHow much of the bag to put down for the rate your lawn needs, how many bags to buy, what the other nutrients come along at, and how to split it across applications.Daylight Hours CalculatorHow many usable hours of light your location gets, month by month through the year, and how much of your working day happens in the dark.
Construction
Layouts and counts for the building trades, worked out from the room.Drywall Layout CalculatorHow many sheets a room takes, which way they go, and where the seams land, with every joint kept clear of door and window corners, plus the compound, tape and screws to finish it.Fastener Strength CalculatorHow much a screw will hold where you are putting it, which of three different failures comes first, and the safe load rather than the load it gives at.
What this is
Most calculators answer the easy half of a question. You can find out how many board feet are in a plank, but not where the pocket holes go. These are for the other half: the ones with enough steps that doing them on paper is a chore and getting one wrong costs material.
There are 11 of them so far, and more when I need them. Everything runs in your browser. There are no accounts, nothing is sent anywhere, and every tool shows the sources its numbers come from.