Units, Colors, Timestamps: The Everyday Conversion Toolkit
Inches to centimetres, hex to RGB, epoch to human time — the conversions that interrupt everyone's day, each one tool and two seconds away.

A US recipe wants cups; your kitchen speaks grams. The furniture listing is in inches; your room is measured in centimetres. The designer sent a hex code; the tool demands RGB. A log file says 1737350400 and means... some moment, presumably. Conversions are the paper cuts of daily work — trivial individually, constant collectively, and always Googled into a page with fourteen ads and a wrong answer above the fold.
Here's the clean version of the whole category.
Physical units: the measuring trio
- [Length Converter](/length-converter) — mm, cm, m, km ↔ inches, feet, yards, miles. Furniture, fabric, screen sizes, running distances. The inch↔cm bridge (×2.54) is the single most-crossed border in unit-land.
- [Weight Converter](/weight-converter) — kg ↔ pounds ↔ ounces, plus grams for the small stuff. International shipping labels and gym plates, mostly.
- [Temperature Converter](/temperature-converter) — °C ↔ °F (and K for the scientists). The oven manual is Fahrenheit; the weather app abroad is mysterious; this is the fix. Rule-of-thumb check: °F ≈ °C×2+30 — the converter is for when close-enough isn't.
Each shows conversions live as you type, both directions, no submit button ceremony.
Kitchen units: where precision meets chaos
Cooking conversions deserve their own tool because they're *not* pure math — a cup of flour and a cup of honey weigh wildly different amounts. Cooking Unit Converter handles cups↔grams↔ml↔tablespoons with ingredient-awareness where it matters, which is why the American cake recipe and your weighing scale can finally cooperate. Baking is chemistry; guessing is how bread becomes brick.
Color codes: the designer-developer bridge
The same coral can be #e15b48, rgb(225, 91, 72), or hsl(8, 72%, 58%) — three dialects for one colour, each demanded by different tools. Color Converter translates between hex, RGB and HSL instantly, both directions. Pair it with the wider Design Tools drawer when the job grows from converting one colour to building a palette around it.
Timestamps: what 1737350400 means
Unix time — seconds since January 1, 1970 — is how systems store moments, and it's meaningless to humans by design. Unix Timestamp converts both ways: paste the number from the log/API/database and get the human date (in your timezone and UTC); pick a date and get the epoch value for testing. Two details that save debugging hours: watch the seconds-vs-milliseconds distinction (13 digits means milliseconds — divide by 1000), and remember the timestamp itself has no timezone; only its *display* does.
Number bases: the programmer's corner
Binary for bit-flags, hex for memory addresses and colours, octal for Unix permissions — Number Base Converter moves values between base 2, 8, 10 and 16 without the manual arithmetic that introduces exactly the off-by-one your bug hunt didn't need. Related classic: file permissions like 755 decoded properly in the Developer Tools collection.
Frequently Asked Questions
Are these converters accurate enough for real work?
Yes — standard definitions, exact factors, no rounding surprises beyond honest display precision. For legal/engineering documents, the underlying factors (like 25.4mm per inch) are exact by international definition.
Do currency conversions belong here?
Live currency rates need a data feed, which conflicts with tools that run fully offline in your browser — a deliberate trade for privacy and reliability. For formatting money values (₹ lakhs/crores style), Currency Formatter handles the notation side.
Why does my timestamp convert to the wrong day?
Timezone, almost always — the timestamp is UTC-anchored; your display isn't. Check both readouts, and check seconds vs milliseconds if the date lands in 1970 or 56545.
Can I convert while offline?
Yes — like everything at AnyTool, converters work offline once loaded. Airport WiFi optional.
Bookmark the one you reach for weekly — start with Length Converter — and the full exchange desk is at Converters.



