{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-05-20T20:47:38.359Z","discovery":{"catalog":"https://toolsly.tools/tools.json","llmsTxt":"https://toolsly.tools/llms.txt","sitemap":"https://toolsly.tools/sitemap.xml"},"relatedTools":[{"slug":"bmi-calculator","name":"BMI Calculator","url":"https://toolsly.tools/bmi-calculator"},{"slug":"percentage-calculator","name":"Percentage Calculator","url":"https://toolsly.tools/percentage-calculator"},{"slug":"age-calculator","name":"Age Calculator","url":"https://toolsly.tools/age-calculator"},{"slug":"date-difference","name":"Date Difference Calculator","url":"https://toolsly.tools/date-difference"},{"slug":"tip-calculator","name":"Tip Calculator","url":"https://toolsly.tools/tip-calculator"},{"slug":"timezone-converter","name":"Timezone Converter","url":"https://toolsly.tools/timezone-converter"},{"slug":"aspect-ratio-calculator","name":"Aspect Ratio Calculator","url":"https://toolsly.tools/aspect-ratio-calculator"},{"slug":"bytes-converter","name":"Bytes Converter","url":"https://toolsly.tools/bytes-converter"}],"kind":"utility","slug":"countdown-timer","name":"Countdown Timer (Time Until)","description":"Calculate how much time until a date — days, hours, minutes, seconds. Heads up: it's a calculator, not a live ticking countdown.","longDescription":"Enter a target date or date-time and get the exact time remaining: days/hours/minutes/seconds breakdown plus totals in each unit. Accepts \"YYYY-MM-DD\", \"YYYY-MM-DD HH:MM\", or full ISO-8601 strings with timezone. If the target is in the past, the result is negative (time since). This is a one-shot calculator — for a live ticking countdown that updates every second, you'll want a different tool or your phone's timer app. Runs entirely in your browser.","category":"calc","categoryName":"Calculators","keywords":["countdown timer","time until","days until","how many days until","countdown calculator","time remaining","time to date","time until date","weeks until","hours until","date countdown","deadline calculator","until christmas","until new year"],"badge":"Calculator","url":"https://toolsly.tools/countdown-timer","inputs":[{"type":"text","key":"target","label":"Target time","defaultValue":"2026-12-31 23:59","placeholder":"YYYY-MM-DD HH:MM","help":"e.g. 2026-12-25, or 2026-12-31 23:59"},{"type":"text","key":"now","label":"From","defaultValue":"now","placeholder":"Default \"now\"","help":"Use \"now\" for the current instant, or a specific date."}],"outputs":[{"key":"daysHoursMinutes","label":"Time remaining"},{"key":"totalDays","label":"In days"},{"key":"totalHours","label":"In hours"},{"key":"totalMinutes","label":"In minutes"},{"key":"totalSeconds","label":"In seconds"},{"key":"iso","label":"Target (ISO)"}],"invocation":{"webUi":"https://toolsly.tools/countdown-timer","api":null,"notes":"Currently invoked via the web UI at `webUi`. Inputs are form fields; outputs are structured text values. A remote MCP/REST API is planned."}}