Useful browser tools, organized by the job

Pick a category, open a calculator, converter, or working example, and get the answer in the browser.

442 tools & guides7 categories

Browse tool categories

Excel + Google Sheets

Formula builders, working examples, CSV cleanup tools, and lightweight spreadsheet templates.

SUMIFS builder · QUERY builder · Formula examples

Materials + project planning

Estimate paint, concrete, tile, decking, drywall, pavers, gravel, mulch, and other project materials.

Paint · Concrete · Tile

Cost + calibration

Calculate print cost, filament or resin use, quotes, flow, rotation distance, and calibration values.

Print cost · Filament · Calibration

Sizing + placement

Plan HTV, DTF, sublimation, shirt decal, tumbler wrap, placement, and production costs.

Shirt sizing · Tumbler wraps · DTF

Reference

Cross-brand paint color matches with measured color distance and visible source details.

Cross-brand matches · Color distance · LRV

Image-to-pattern workspace

Turn an image into an editable fuse-bead pattern, preview colors, and export construction files.

Convert image · Edit colors · Export pattern

Local-first utilities

Format, convert, validate, decode, compare, and generate common developer values in the browser.

JSON · Encoding · Linux permissions