{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"swim-pace"},"result":{"entity_type":"calculator","id":"swim-pace","calculator_id":"swim-pace","canonical_url":"https://tttkmbb.com/fitness/swim-pace","name":"Swim Pace Calculator","title":"Swim Pace Calculator – Pace per 100 m and 100 yd, Speed and Pool Lengths from Distance and Time","category":"fitness","category_name":"Sports & Fitness","tool_name":"calculate_swim_pace","featured_mcp_tool":false,"description":"Computes swimming pace per 100 metres and per 100 yards, speed in m/s and km/h, and the number of 25 m and 50 m pool lengths from a swum distance and time.","use_when":"You swam (or plan to swim) a given distance in a given time and need the pace per 100 m or 100 yd, e.g. to set interval targets.","do_not_use_when":"The distance is in yards (convert first: 1 yd = 0.9144 m) or you need running/cycling pace (use running-pace or pace-converter).","inputs":[{"name":"distance_m","label":"Distance","type":"number","unit":"m","required":true,"max":100000,"exclusive_min":0,"description":"Distance swum in metres.","example":1500},{"name":"time","label":"Time","type":"string","required":true,"description":"Elapsed time as h:mm:ss, mm:ss (30:00) or plain minutes.","example":"30:00"}],"outputs":[{"name":"pace_per_100m","label":"Pace per 100 m","type":"string","unit":"min:sec/100 m","decimals":4,"description":"Time per 100 metres."},{"name":"pace_per_100yd","label":"Pace per 100 yd","type":"string","unit":"min:sec/100 yd","decimals":4,"description":"Time per 100 yards (91.44 m)."},{"name":"pace_seconds_per_100m","label":"Pace per 100 m (seconds)","type":"number","unit":"s/100 m","decimals":1,"description":"Same pace as seconds per 100 m."},{"name":"speed_m_per_s","label":"Speed","type":"number","unit":"m/s","decimals":3,"description":"Average speed in metres per second."},{"name":"speed_kmh","label":"Speed","type":"number","unit":"km/h","decimals":2,"description":"Average speed in kilometres per hour."},{"name":"lengths_25m_pool","label":"Lengths of a 25 m pool","type":"number","unit":"lengths","decimals":1,"description":"distance_m / 25."},{"name":"lengths_50m_pool","label":"Lengths of a 50 m pool","type":"number","unit":"lengths","decimals":1,"description":"distance_m / 50."}],"input_schema":{"type":"object","properties":{"distance_m":{"description":"Distance swum in metres. Unit: m.","type":"number","maximum":100000,"exclusiveMinimum":0,"examples":[1500],"x-unit":"m"},"time":{"description":"Elapsed time as h:mm:ss, mm:ss (30:00) or plain minutes.","type":"string","examples":["30:00"]}},"additionalProperties":false,"required":["distance_m","time"]},"output_schema":{"type":"object","properties":{"pace_per_100m":{"description":"Time per 100 metres. Unit: min:sec/100 m.","type":"string","x-unit":"min:sec/100 m"},"pace_per_100yd":{"description":"Time per 100 yards (91.44 m). Unit: min:sec/100 yd.","type":"string","x-unit":"min:sec/100 yd"},"pace_seconds_per_100m":{"description":"Same pace as seconds per 100 m. Unit: s/100 m.","type":"number","x-unit":"s/100 m"},"speed_m_per_s":{"description":"Average speed in metres per second. Unit: m/s.","type":"number","x-unit":"m/s"},"speed_kmh":{"description":"Average speed in kilometres per hour. Unit: km/h.","type":"number","x-unit":"km/h"},"lengths_25m_pool":{"description":"distance_m / 25. 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Inputs supplied by the caller determine the output."},"examples":[{"name":"1500 m in 30:00","inputs":{"distance_m":1500,"time":"30:00"},"expected":{"pace_per_100m":"2:00","pace_per_100yd":"1:50","pace_seconds_per_100m":120,"speed_m_per_s":0.833,"speed_kmh":3,"lengths_25m_pool":60},"url":"https://tttkmbb.com/api/v1/calculate/swim-pace?distance_m=1500&time=30%3A00"},{"name":"400 m in 6:40","inputs":{"distance_m":400,"time":"6:40"},"expected":{"pace_per_100m":"1:40","pace_per_100yd":"1:31","speed_m_per_s":1,"speed_kmh":3.6,"lengths_50m_pool":8},"url":"https://tttkmbb.com/api/v1/calculate/swim-pace?distance_m=400&time=6%3A40"}],"faq":[{"q":"Why is the pace per 100 yards faster than per 100 metres?","a":"100 yards is 91.44 m, about 8.6 % shorter, so the same speed gives a proportionally shorter time. Short-course-yards (SCY) times are not directly comparable with metres."},{"q":"What is a typical pace?","a":"Recreational lap swimmers commonly hold 2:00–2:30 per 100 m; competitive distance swimmers are near 1:05–1:15 per 100 m."}],"tags":["swim pace","pace per 100 m","pace per 100 yards","swimming speed","pool lengths"],"related":[{"calculator_id":"pace-converter","reason":"Convert running paces and speeds between units."},{"calculator_id":"calories-burned","reason":"Energy cost of the swim from its duration."}],"links":{"html":"https://tttkmbb.com/fitness/swim-pace","markdown":"https://tttkmbb.com/fitness/swim-pace.md","json":"https://tttkmbb.com/fitness/swim-pace.json","api":"https://tttkmbb.com/api/v1/calculate/swim-pace","schema":"https://tttkmbb.com/api/v1/calculators/swim-pace","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-23"},"timestamp":"2026-09-23T23:31:14Z","next_actions":[{"tool":"run_calculator","calculator_id":"swim-pace","reason":"Run Swim Pace Calculator with the inputs above."}],"links":{"markdown":"https://tttkmbb.com/fitness/swim-pace.md"}}