Currency Converter - Online Exchange Rate (Manual Update)
Convert between currencies using manually updated or default rates. Great for estimation when offline. Local settings.
UD5 Toolkit
| # | Currency | Name | Rate (1 Base = X) | Inverse (1 Unit = X Base) |
|---|
Result = Amount × (TargetRate / SourceRate) where rates are expressed relative to USD. This cross-rate method ensures consistent conversions across all 24 supported currencies.
Convert between currencies using manually updated or default rates. Great for estimation when offline. Local settings.
Find the currency code (USD, EUR, JPY) for any country or reverse‑lookup the country from a code. Static reference.
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
Convert annual salary to effective hourly rate considering holidays, vacation, and work hours per week.
Convert across length, mass, speed, temperature, data, and more. Search any unit and type. Compact and fast.
Change the sample rate of an audio file (e.g., 48kHz to 44.1kHz) without leaving the browser. Ideal for podcast prep.
Type a number and see its full English word representation (e.g., 123 → one hundred twenty‑three). Supports large numbers.
Convert any text to a long string of binary digits. Perfect for learning binary representation. Local conversion.
Translate hexadecimal numbers to decimal integers. Instantly see the magnitude. A simple, private utility for developers and mathematicians.
Measure a ring's inside diameter or circumference and convert to US, UK, European, and Japanese sizes.
Convert between digital storage units: bits, bytes, kilobytes, megabytes, gigabytes, and more. Binary and decimal interpretations available. A developer must-have.
Convert band and cup sizes between US, UK, European, French, and Australian systems. Accurate shopping abroad.
Divide a total bill among multiple people considering tax and service fees. See exactly who pays what.
Convert text between various programming case styles. Includes SCREAMING_SNAKE, PascalCase, etc.
Calculate output voltage from a two-resistor voltage divider. Enter input voltage and resistances to see Vout. Includes circuit schematic. No data sent.
Type notes and convert them into a realistic handwriting image with varied pen styles, ink colors, and paper backgrounds. Perfect for study notes.
Convert between nautical miles, statute miles, kilometers, and knots to mph/kmh. Essential for navigation.
Convert a number like 1234.56 to English words 'one thousand two hundred thirty-four and 56/100'. For checks.
Click cells to see patterns, highlight multiples. Visual way to learn multiplication. Print empty grid.
See exact mm and inch dimensions of ISO A-series and US paper sizes. Visual comparison tool. Also calculates weight based on GSM and dimensions.
Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.
Enter your UK tax code and see an explanation of what the numbers and letters mean. Simple educational reference. No data stored.
Check if your A/B test results are statistically significant using chi-squared test. Enter visitors & conversions for control/variant. Results in plain English.
Enter pins per roll and calculate total bowling score including strikes and spares. Supports 10 frames. Learn scoring rules visually.
Type a mathematical expression like 'sqrt(16)+sin(pi/2)' and get the result instantly. Supports popular functions. Local.
Complete a 10x10 multiplication grid against the clock. A fun way to master times tables.
Enter an original pan size and find an alternative pan with the same batter volume. Never overflow or underfill.
Enter two premises and a conclusion (All A are B, Some C are not B, etc.) to check validity using Venn diagram rules.
Select tuning, scale length, and string gauge to calculate total tension on the neck. Build custom string sets.
Test how fast you can convert between binary and decimal. Timed drills with increasing difficulty. Learn base‑2 fluency.