Every calculator in the kitchen drawer

Convert cups, tablespoons, ounces, millilitres and grams using the real density of 100+ ingredients — because a cup of flour and a cup of honey are not the same weight.

Convert millilitres to fluid ounces in both systems at once — the US fluid ounce is 29.57 ml but the imperial one is 28.41 ml — and see what the answer is in ounces of weight.

US butter sticks are a unit no other country uses. Convert sticks to grams, cups, tablespoons and ounces instantly.

Paste a full ingredient list and rescale every line at once — from 4 servings to 12, or from 12 back down to 2 — with sensible fractions and pan-size guidance.

Convert an entire American recipe into metric weights in one pass, matching each line to its ingredient density instead of using one generic cup factor.

Calculated swap amounts for the ingredients people run out of mid-recipe, with notes on what each substitute does to texture and flavour.

Run several named timers side by side — one for the rice, one for the roast — with presets for eggs, pasta and rest times.

Air fryers cook with fast-moving air, so recipes need a lower temperature and a shorter time. Get both numbers, plus shake-and-check timings.

Work out the scaling factor between round, square, rectangular and loaf pans by volume, and how the bake time should change.

Convert between Fahrenheit, Celsius, gas mark and fan-assisted (convection) temperatures, with the standard oven chart.