Design
Convert LCH color values to HSV/HSB for color manipulation
lch-to-hsv-converterDesign
Convert LAB color values to HEX for screen display
lab-to-hex-converterDesign
Convert LAB color values to HSL for screen display
lab-to-hsl-converterDesign
Convert LAB color values to RGB for screen display
lab-to-rgb-converterAstronomy
Calculate lunar eclipse dates and types for any year
lunar-eclipse-calculatorFormat Conversion
Convert Markdown formatted text to plain text by removing all Markdown syntax and formatting
markdown-to-plain-textEducation
Type a football foul in plain words ("handball in box", "tactical foul to break the counter", "indirect free kick signal") and get the IFAB 2025/26 law reference, restart (DFK/IFK/PK), card, referee signal, and a season yellow-card suspension forecast.
football-foul-tactic-and-referee-gesture-translatorUtilities
Convert any date to ISO 8601 week number, day-of-year, Julian Day, and fiscal-quarter boundaries (4-4-5, 4-5-4, 13-week, or standard).
iso-week-number-and-fiscal-quarter-anchorHealth
Calculate the infusion pump rate in mL/hr = Total volume / Infusion time. Time may be hours+minutes or minutes; also reports mL/min and the decimal duration. Verify pump units match the order, confirm line patency, and sum channels for restricted patients. Derived from Macklin 2011, NICE CK174 2017, Phillips 2007, and ISMP. Not medical advice.
infusion-rate-ml-hrHealth
Calculate the gravity (manual) IV drip rate in drops per minute: gtt/min = Volume × Drop factor / Time. Drop factor selectable (macro 10/15/20 or micro 60 gtt/mL). Time may be hours+minutes or minutes; rounded to whole drops with drift warning. Vasoactive/cardiotonic drugs and pediatric infusions must ALWAYS use a pump. Derived from Philips 2007, Macklin 2011, MDCalc, and ISMP. Not medical advice.
iv-drip-rate-calculatorHealth
Calculate the continuous IV infusion rate that maintains a target steady-state plasma concentration: R₀ = Css · CL, where Css is the target concentration and CL is clearance. At steady state, the infusion rate equals the elimination rate. If the IV solution concentration (mg/mL) is provided, the tool additionally derives the infusion-pump delivery rate in mL/h, which is what the pump is actually set to in clinical practice. This is an IV-only tool — bioavailability F is not applicable. Reaching steady state requires approximately 4–5 half-lives. Not medical advice.
iv-infusion-rate-calculatorText Processing
Turn English words into teaching-oriented US/UK IPA, color-coded phonemes, articulation cues, and minimal-pair drills.
ipa-phonetic-transcription-and-pronunciation-coach