Next build
Material yield
Estimate how many parts fit on a sheet or roll using trim, bleed, grain direction, or minimum spacing constraints. Costing before the estimate comes back.
Practical calculators for designing things that have to work.
IDCalcs is a working library of production-minded tools: quick dimensional checks, material estimates, and design references that help move an idea from sketch to real-world spec. Free, fast, and built to be bookmarked.
Core calculators
Fabrication and daily-use tools. Everything marked live works right now, on desktop and phone, with no account.
Live
Sheet metal gauge
Convert gauge to thickness, estimate weight per square foot, and compare steel, stainless, and aluminum. Each metal uses a different gauge standard, and the chart makes that explicit.
Live
Bend allowance
Calculate bend allowance, bend deduction, setback, and flat pattern length from thickness, bend angle, inside radius, and K-factor, with a visual reference and the formulas shown.
Live
Box fit and clearance
Start from product dimensions, add clearance presets for foam, corrugate, or bags, choose a board caliper, and get internal and external carton dimensions with volume.
Live
Unit converter
Inches, millimeters, points, ounces, grams, cubic volume, and board caliper in one place, tuned to the units designers actually bounce between.
Live
Pallet utilization
Cases per layer, layers per pallet, and cube efficiency against standard pallet footprints, with club store height and weight references built in.
Packaging and retail wing
The underserved side of the library: tools for packaging designers, POP designers, and private-label teams. This is where IDCalcs aims to be the single source.
In design
Corrugate strength reference
ECT and Mullen burst side by side, flute profiles A through F with calipers and typical uses, and a McKee-based stacking strength estimate.
In design
Carton dimensioning
Internal to external conversions by flute caliper, plus dimensional weight for the major parcel carriers so shipping cost surprises show up early.
Scoped
Club store display checker
Half-pallet and full-pallet display envelopes, weight limits, and shroud clearances by retailer, so a display concept can be sanity-checked before rendering.
How the library grows
One calculator at a time, each one finished and worth bookmarking before the next begins.
1
Ship it working
Every tool launches functional on desktop and phone, with clear inputs and instant results.
2
Show the math
Formulas, assumptions, and standards are stated on the page, never hidden behind the result.
3
Flag the limits
Each tool says when to confirm with a supplier, shop, or retailer spec instead of trusting theory.
4
Repeat carefully
A new calculator is added only after the last one has earned its place in the library.