PRACTICAL TOOLS · ACCURATE CALCULATIONS

Calculators made for
real-world projects.

Straightforward, single-purpose tools with transparent formulas, worked examples, and zero data tracking. From the kitchen scale to the workshop desk.

Measure twice, scale once, build with quiet confidence.

FIELD NOTES & PRECISION FORMULAS

The Tool Collection

Seven focused tools for measuring, scaling, and planning

Bake Ratio Lab diagram RECIPES & PAN GEOMETRY 01
KITCHEN & CULINARY · RECIPES & RATIOS

Bake Ratio Lab

Scale batches accurately by weight, convert round and rectangular pan areas, and compute baker’s flour percentages with zero math guesswork.

Scale by flour % · Round & square pan area · Hydration weight
Screen Size Lab diagram ACTIVE DISPLAY GEOMETRY 02
TECH & WORKSPACE · MONITORS & PPI

Screen Size Lab

Compare active screen rectangles side-by-side at scale, calculate pixel density (PPI), and plan dual/triple monitor widths for your desk.

True aspect ratios · PPI density scale · Dual & triple desk span

OUR DESIGN PRINCIPLE

Built like well-kept
workshop tools.

Every calculation runs entirely in your browser using deterministic arithmetic and geometry. We publish our formulas, explain the rounding choices, and never ask for account registration or personal data.

Whether you're scaling a sourdough recipe by weight, sizing monitors for a sit-stand desk, or coordinating global meetings across daylight saving boundaries, you get instant numbers you can trust.

100% In-Browser Privacy

Your recipes, room dimensions, and team schedules never leave your device. Zero database logging, zero tracking forms.

Transparent Formulas

Every tool explains its arithmetic or geometric equations and assumptions upfront so you can audit the results.

Instant Edge Delivery

Pure static assets delivered via high-speed global Anycast CDN edge nodes with sub-50ms response times worldwide.