FREE TOOLS
Browser-based utilities for engineering and quality teams. No login, no upload to a server — everything runs in your browser.
Combine multiple PDF files into one in seconds. Drag, reorder, and merge — all in your browser. No upload, no account.
Try it free →PDFAdd or remove text watermarks from PDFs instantly. Presets include CONTROLLED, DRAFT, CONFIDENTIAL, and more.
Try it free →CONVERTERConvert torque, pressure, and length units used in manufacturing — N·m, psi, in·lbf, bar, mm, and more. Export results as CSV.
Try it free →TEMPLATESDownload free PDF templates for ISO 9001, AS9100, IATF 16949, and FDA 21 CFR 820 — job aids, work instructions, control plans, and SOPs.
Try it free →THREADSMetric (M1.6–M24) and Imperial (UNC/UNF #0–1") tap drill sizes with adjustable thread engagement percentage. Calculates tap drill diameter in mm and inches — runs entirely in your browser.
Try it free →WEIGHTSCalculate the weight of steel, aluminum, copper, titanium, and plastic stock shapes — round bar, tube, hex bar, sheet — in kg and lb. No login, no account.
Try it free →SPCCompute Cp, Cpk, Pp, Ppk, sigma level, and estimated PPM defective from raw measurement data or summary statistics. Color-coded results and histogram — no login required.
Try it free →AQLGenerate ANSI/ASQ Z1.4 (ISO 2859-1) single-sampling normal inspection plans instantly. Enter lot size, inspection level, and AQL — get code letter, sample size, and accept/reject numbers.
Try it free →MACHININGCalculate spindle RPM and feed rate for milling, turning, and drilling. Built-in SFM/SMM and chip load tables for Aluminum, Steel, Stainless, Titanium, and more. Inch and metric. Export CSV.
Try it free →HARDNESSConvert HRC, HRB, HB (Brinell), HV (Vickers), and tensile strength for steel. Enter any value and get instant equivalents — ASTM E140 based, runs in your browser.
Try it free →FRACTIONSConvert between fractional inch, decimal inch, and millimeters. Enter any value — the others update instantly, snapped to the nearest 1/64". Complete 1/64" to 1" reference table with CSV export.
Try it free →GD&TAll 14 GD&T geometric characteristics — Form, Orientation, Location, Profile, Runout — with SVG symbols, datum requirements, MMC/LMC applicability, and plain-English definitions. Plus all 6 modifier symbols.
Try it free →TORQUECalculate recommended tightening torque for metric (8.8 / 10.9 / 12.9) and SAE imperial (Grade 2 / 5 / 8) bolts. Select size, grade, and lubrication condition — results in N·m and ft·lbf instantly. No login required.
Try it free →MSACompute EV (repeatability), AV (reproducibility), Gage R&R, Part Variation, and %GRR using the AIAG Average & Range method. Up to 10 parts × 3 operators × 3 trials — color-coded results, CSV export, no login required.
Try it free →WELDINGInteractive AWS A2.4 welding symbol chart — groove, fillet, plug, spot, seam, surfacing, back welds, supplementary symbols, and reference-line conventions. Inline SVG symbols with plain-English descriptions. Filter by category, search instantly.
Try it free →DRILLINGComplete drill bit size chart — number (#80–#1), letter (A–Z), fractional (1/64"–1"), and metric (0.30–25 mm) — all sorted by decimal size. Type any size or decimal/mm value to jump to the nearest match. CSV export.
Try it free →CNCCalculate X/Y hole coordinates for any bolt circle (hole pattern). Enter diameter, number of holes, start angle, and center — get a coordinate table, SVG preview, and CSV export for CNC or inspection use.
Try it free →COPLAIN AI PLATFORM
Turn dense work instructions into audit-ready job aids, run compliance audits, and translate documents in minutes.
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