TradeUnits

TradeUnits is a focused conversion app built for people who work with real measurements every day. Instead of one bloated universal calculator, it brings together three specialized professional profiles — Culinary, Studio, and Site — each with its own units, formulas, density tables, and correction coefficients tuned to the way that craft actually works. Switch between profiles instantly from the tab bar; every workspace keeps its own tools, presets, and history.

The Kitchen profile converts ingredients between grams, millilitres, cups, and spoons using real per-ingredient density, scales full recipes by serving count, converts oven temperatures across Celsius, Fahrenheit, and Gas Mark, and calculates baker's percentages for dough. The Studio profile solves the exposure triangle, shows stop deltas and equivalent combinations, applies the Sunny 16 rule, plans long exposures with ND filters, and computes depth of field and hyperfocal distance for any sensor format. The Site profile estimates mortar, plaster, and screed, counts bricks and mortar bags, plans paint coverage, and lays out tiling jobs with grout and waste buffers. A built-in Quick Convert handles everyday length, mass, volume, area, temperature, and speed conversions right from the home screen.

Every calculation can be pinned as a reusable preset or saved to a shared history you can export at any time. A personal library lets you add custom ingredients, materials, and coefficients for your own workflow, alongside a curated field reference of constants and rules. TradeUnits replaces a drawer full of cheat sheets and single-purpose calculators with one precise, professional companion.