{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"force"},"result":{"entity_type":"calculator","id":"force","calculator_id":"force","canonical_url":"https://tttkmbb.com/conversion/force","name":"Force Converter","title":"Force Converter – Newtons, Kilonewtons, Pounds-Force, Kilograms-Force, Dynes and Kips","category":"conversion","category_name":"Unit Conversion","tool_name":"convert_force","featured_mcp_tool":false,"description":"Converts force between newtons (N, kN), dynes, gram-force, kilogram-force (kilopond), ounce-force, pound-force and kips using exact factors (1 lbf = 4.4482216152605 N, 1 kgf = 9.80665 N).","use_when":"You need a load, thrust or weight-force in another unit, e.g. lbf to N, kgf to N or kN to kips for structural loads.","do_not_use_when":"You need to compute force from mass and acceleration (Newton's second law is a physics calculation, not a unit conversion), a spring force (use hookes-law) or plain mass units (use mass).","inputs":[{"name":"value","label":"Value","type":"number","required":true,"description":"Amount to convert, expressed in from_unit.","example":100},{"name":"from_unit","label":"From unit","type":"enum","required":true,"values":[{"value":"N","label":"Newton (N)","aliases":["newton","newtons"]},{"value":"kN","label":"Kilonewton (kN)","aliases":["kilonewton","kilonewtons"]},{"value":"dyn","label":"Dyne (dyn)","aliases":["dyne","dynes"]},{"value":"gf","label":"Gram-force (gf)","aliases":["gram-force","gram force","gramforce","gram·force","gram_force","grams-force","grams force","gramsforce","grams·force","grams_force","pond"]},{"value":"kgf","label":"Kilogram-force (kgf)","aliases":["kilogram-force","kilogram force","kilogramforce","kilogram·force","kilogram_force","kilograms-force","kilograms force","kilogramsforce","kilograms·force","kilograms_force","kilopond","kiloponds","kp"]},{"value":"ozf","label":"Ounce-force (ozf)","aliases":["ounce-force","ounce force","ounceforce","ounce·force","ounce_force","ounces-force","ounces force","ouncesforce","ounces·force","ounces_force"]},{"value":"lbf","label":"Pound-force (lbf)","aliases":["pound-force","pound force","poundforce","pound·force","pound_force","pounds-force","pounds force","poundsforce","pounds·force","pounds_force"]},{"value":"kip","label":"Kip (kip)","aliases":["kips","kilopound","kilopounds","kilopound-force","kilopound force","kilopoundforce","kilopound·force","kilopound_force","klbf"]}],"description":"Unit of the input value. Accepted symbols: N, kN, dyn, gf, kgf, ozf, lbf, kip; spelled-out names and common abbreviations are accepted too.","example":"lbf"},{"name":"to_unit","label":"To unit","type":"enum","required":true,"values":[{"value":"N","label":"Newton (N)","aliases":["newton","newtons"]},{"value":"kN","label":"Kilonewton (kN)","aliases":["kilonewton","kilonewtons"]},{"value":"dyn","label":"Dyne (dyn)","aliases":["dyne","dynes"]},{"value":"gf","label":"Gram-force (gf)","aliases":["gram-force","gram force","gramforce","gram·force","gram_force","grams-force","grams force","gramsforce","grams·force","grams_force","pond"]},{"value":"kgf","label":"Kilogram-force (kgf)","aliases":["kilogram-force","kilogram force","kilogramforce","kilogram·force","kilogram_force","kilograms-force","kilograms force","kilogramsforce","kilograms·force","kilograms_force","kilopond","kiloponds","kp"]},{"value":"ozf","label":"Ounce-force (ozf)","aliases":["ounce-force","ounce force","ounceforce","ounce·force","ounce_force","ounces-force","ounces force","ouncesforce","ounces·force","ounces_force"]},{"value":"lbf","label":"Pound-force (lbf)","aliases":["pound-force","pound force","poundforce","pound·force","pound_force","pounds-force","pounds force","poundsforce","pounds·force","pounds_force"]},{"value":"kip","label":"Kip (kip)","aliases":["kips","kilopound","kilopounds","kilopound-force","kilopound force","kilopoundforce","kilopound·force","kilopound_force","klbf"]}],"description":"Unit to convert into (same symbols as from_unit).","example":"N"}],"outputs":[{"name":"result","label":"Result","type":"number","decimals":6,"description":"Converted value expressed in to_unit (rounded to 6 decimals; see result_text for very small or very large values)."},{"name":"result_text","label":"Conversion","type":"string","decimals":4,"description":"The conversion as text with 6 significant figures, e.g. \"5 mi = 8.04672 km\"."},{"name":"formula","label":"Unit relation","type":"string","decimals":4,"description":"Relation used, e.g. \"1 mi = 1.609344 km\"."},{"name":"factor","label":"Factor","type":"number","decimals":12,"description":"Multiplier from from_unit to to_unit (result = value × factor); absent for non-linear conversions."},{"name":"conversion_table","label":"Conversion table","type":"object","decimals":12,"description":"The input value expressed in every supported force unit (6 significant figures), keyed by unit symbol."}],"input_schema":{"type":"object","properties":{"value":{"description":"Amount to convert, expressed in from_unit.","type":"number","examples":[100]},"from_unit":{"description":"Unit of the input value. Accepted symbols: N, kN, dyn, gf, kgf, ozf, lbf, kip; spelled-out names and common abbreviations are accepted too.","type":"string","enum":["N","kN","dyn","gf","kgf","ozf","lbf","kip"],"examples":["lbf"]},"to_unit":{"description":"Unit to convert into (same symbols as from_unit).","type":"string","enum":["N","kN","dyn","gf","kgf","ozf","lbf","kip"],"examples":["N"]}},"additionalProperties":false,"required":["value","from_unit","to_unit"]},"output_schema":{"type":"object","properties":{"result":{"description":"Converted value expressed in to_unit (rounded to 6 decimals; see result_text for very small or very large values).","type":"number"},"result_text":{"description":"The conversion as text with 6 significant figures, e.g. \"5 mi = 8.04672 km\".","type":"string"},"formula":{"description":"Relation used, e.g. \"1 mi = 1.609344 km\".","type":"string"},"factor":{"description":"Multiplier from from_unit to to_unit (result = value × factor); absent for non-linear conversions.","type":"number"},"conversion_table":{"description":"The input value expressed in every supported force unit (6 significant figures), keyed by unit symbol.","type":"object"}}},"formula":"result = value × factor, factor = (1 from_unit in N) / (1 to_unit in N)","method":"kgf and lbf are the weights of 1 kg and 1 lb under standard gravity gₙ = 9.80665 m/s²; a mass in kg therefore has the same numeric value in kgf.","sources":[{"name":"NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors","url":"https://www.nist.gov/pml/special-publication-811","type":"standard","retrieved_at":"2026-09-23"},{"name":"BIPM – The International System of Units (SI Brochure, 9th edition)","url":"https://www.bipm.org/en/publications/si-brochure","type":"standard","retrieved_at":"2026-09-23"},{"name":"Wikipedia – Conversion of units","url":"https://en.wikipedia.org/wiki/Conversion_of_units","type":"reference","retrieved_at":"2026-09-23"}],"freshness":{"type":"static","max_age_seconds":null,"note":"Deterministic formula with fixed constants; results never go stale. Inputs supplied by the caller determine the output."},"examples":[{"name":"100 pounds-force to newtons","inputs":{"value":100,"from_unit":"lbf","to_unit":"N"},"expected":{"result":444.822162,"factor":4.4482216153,"formula":"1 lbf = 4.448221615 N","conversion_table":{"kgf":45.3592,"kN":0.444822}},"url":"https://tttkmbb.com/api/v1/calculate/force?value=100&from_unit=lbf&to_unit=N"},{"name":"500 N to kilograms-force","inputs":{"value":500,"from_unit":"N","to_unit":"kgf"},"expected":{"result":50.985811,"conversion_table":{"lbf":112.404,"dyn":50000000}},"url":"https://tttkmbb.com/api/v1/calculate/force?value=500&from_unit=N&to_unit=kgf"}],"faq":[{"q":"Is kgf the same as kg?","a":"No. kg is mass; kgf is the force exerted by 1 kg under standard gravity (9.80665 N). On Earth the numbers match, which is why scales are labelled in kg."},{"q":"What is a kip?","a":"A kilopound-force, 1000 lbf = 4448.22 N, used in US structural engineering."}],"tags":["force converter","lbf to n","kgf to n","newtons to pounds force","kip","dyne"],"related":[{"calculator_id":"mass","reason":"Mass units behind kgf and lbf."},{"calculator_id":"torque","reason":"Force × lever arm units (N·m, lbf·ft)."},{"calculator_id":"hookes-law","reason":"Spring force from stiffness and displacement."}],"links":{"html":"https://tttkmbb.com/conversion/force","markdown":"https://tttkmbb.com/conversion/force.md","json":"https://tttkmbb.com/conversion/force.json","api":"https://tttkmbb.com/api/v1/calculate/force","schema":"https://tttkmbb.com/api/v1/calculators/force","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-23"},"timestamp":"2026-09-23T23:23:56Z","next_actions":[{"tool":"run_calculator","calculator_id":"force","reason":"Run Force Converter with the inputs above."}],"links":{"markdown":"https://tttkmbb.com/conversion/force.md"}}