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Quick add-and-go tools for operators and quality checks. Use the table of contents to jump to a tool.

17 free tools
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Resource

Weights & Measures

Quick packer checks using the UK “3 packer rules” (Average, TNE, and Maximum Error).

3 packer rules

Average Quantity Rule: On average, the actual contents (weight or volume) of all packages in a batch must equal or exceed the nominal quantity stated on the label.
Tolerable Negative Error (TNE) Rule: No more than 2.5% of packages in a batch may be short by more than the Tolerable Negative Error (TNE). These are "non-standard" (−T1) packages.
Maximum Error Rule: No single package may be short by more than twice the TNE. These are "inadequate" (−T2) packages and must not be sold.

Declared nominal

Unit

Specific gravity (g/mL)

Packaging tare weight (g)

Check my result (mL)

Safety margin above −T1 (mL)

Internal control only. Readings this close to −T1 are compliant but flagged "at limit". Set 0 to turn off.

Resource

SG Cup Calibration

Calibrate an SG cup using water density vs temperature, check tolerance (PASS / FAIL), and generate a correction factor.

Equipment ID

Calibrated by

Nominal volume (mL)

Measured water weight (g)

Temperature (°C, 4–33)

Tolerance (%)

Actual volume = weight ÷ water density. PASS if |deviation %| ≤ tolerance.

Resource

Tolerance Calculator

Calculate min/max limits from nominal and tolerances.

Nominal

+ Tolerance

- Tolerance

Resource

Unit Converter

Quick conversions for common manufacturing units.

Conversion

Value

Resource

Torque Converter

Convert torque units and estimate preload (optional) from K and diameter.

Torque

Unit

K (nut factor)

Diameter (mm)

Resource

Gage R&R (Quick)

Estimate %GRR and NDC from EV/AV/PV, with the AIAG verdict (under 10% acceptable, 10–30% marginal, over 30% unacceptable; NDC 5 or more).

EV (repeatability)

AV (reproducibility)

PV (part variation)

Resource

AQL Calculator

Calculate sample size and accept/reject points from lot size, inspection level, and AQL values.

Inspection level Critical AQL Major AQL Minor AQL

Lot size

Checked by

Resource

Go / No-Go (Printable)

Enter nominal and tolerances, then type/scan a measured value to get an instant PASS/FAIL. Use Print to post limits at a station.

Nominal

+ Tolerance

- Tolerance

Measured value

Resource

Defects Metrics

Calculate defects per unit (DPU), defects per million units (PPM) and defects per million opportunities (DPMO).

Units produced

Defects found

Opportunities per unit

Resource

Process Capability

Compute Cp/Cpk from mean, sigma and spec limits (Cpk 1.33 or more is capable).

Mean

Std dev (σ)

LSL

USL

Resource

I-MR Quick Limits

Paste measurements to estimate I-MR chart limits (handy for quick checks).

Measurements (comma or space separated)

Resource

Barcode Checker

Scan and compare barcodes (reference vs check), or generate a barcode for manual verification.

Checked by

Mode

Scan barcode value

Barcodes render using CODE128. Most scanners will paste into the field automatically.

Resource

QR Generator

Generate a QR code for a URL or any text (great for station work instructions).

Text or URL

Print and post at a station, or scan to open.

Resource

Julian Code

Convert a date into a Julian code (YYYYDDD), and validate scanned codes (YYYYDDD / YYDDD / DDD).

Selected date

Julian code (YYYYDDD / YYDDD / DDD)

Resource

Week Code

Convert a date into an ISO week code (YYYY-Www).

Date

Resource

Takt Time

Calculate takt time from available minutes and demand.

Available time (minutes)

Demand (units)

Resource

OEE Calculator

Compute overall equipment effectiveness from A/P/Q percentages.

Availability (%)

Performance (%)

Quality (%)

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