Printable Cheat Sheets
One-page reference cards for the bench, workshop, kitchen or glove box. Open one, print it or save as PDF.
Electronics & electrical
Bench references for component values, circuit formulas and cable sizing.
- Resistor Color Code Chart — 4-band and 5-band color codes with E12/E24 preferred value series
- Ohm's Law Reference Card — V = IR triangle, P = IV power formula and common worked examples
- AWG Wire Ampacity — safe current ratings by gauge for NEC and chassis wiring
- NEC Voltage Drop Limits — max permitted drop percentages and conductor sizing by circuit length
3D printing
Maker bench references for filament profiles, drying and material data.
- Materials Comparison Chart 2026 — side-by-side print temperatures, strength and flexibility for PLA, PETG, ABS, ASA and TPU
- Filament Settings Chart — extruder temp, bed temp, cooling and retraction values by filament type
- Filament Drying Reference — moisture absorption ranking, drying temperature and time per material
- Filament Density & Price — density in g/cm³ and cost-per-gram comparison across common filament types
Kitchen & cooking
Quick references for measurements, oven temperatures and coffee ratios.
- Kitchen Measurements — cups, tablespoons and teaspoons in mL, plus common ingredient gram equivalents
- Oven Temperature Chart — Fahrenheit, Celsius and gas mark with bread, cake and roast temperature bands
- Coffee Brewing Ratios — grams of coffee to water for espresso, pour-over, French press and moka pot
EV & solar
Handy references for the glove box or solar installation.
- EV Charging Levels & Connectors — Level 1/2/3 power ratings, connector types (Type 1/2, CCS, CHAdeMO) and typical charge times
- Solar Sizing Formulas — panel output, battery capacity and inverter sizing formulas for off-grid systems
General reference
Everyday conversions for travel, shopping and everyday measurements.
- Metric to Imperial — length, weight, volume and temperature conversions in a single printable A4 reference
What is a cheat sheet?
Each cheat sheet is a single print-ready HTML page: a clean, print-optimised layout focused on the reference itself. Open the page, press Ctrl+P (or Cmd+P on Mac) and choose "Save as PDF" or send it straight to a printer. The cards are designed to fit on one A4 or letter-sized sheet.
When to use a cheat sheet instead of the calculator
- Working offline or away from a screen
- Pinning a reference to a wall or fridge
- Keeping one in the glove box, tool bag or kitchen drawer
- Teaching or sharing with someone who needs the values at a glance
For calculations on the screen, the interactive tool is faster. For values you need repeatedly without typing, a printed card wins.
Frequently Asked Questions
How do I print a cheat sheet?
Open the cheat sheet page, then press Ctrl+P on Windows or Cmd+P on Mac. In the print dialog, choose your printer or select "Save as PDF" to keep a digital copy. The pages are designed with print-specific CSS that hides the sidebar, navigation and footer, leaving only the reference content.
Do the cheat sheets work on mobile?
Yes. Each page is responsive and readable on a phone or tablet. To save as PDF on Android, use the browser's share menu and choose "Print" then "Save as PDF". On iOS, use the share sheet and tap "Print", then pinch to zoom to save to Files as a PDF.
Are new cheat sheets added regularly?
New printables are added when a converter or calculator topic has enough reference data to fill a useful one-pager. If you have a suggestion for a topic that would make a good cheat sheet, use the contact page.