| Document and Entity Information - USD ($) | 6 Months Ended | |
| Dec. 31, 2018 | Dec. 31, 2017 | |
| Document and Entity Information: | ||
| Entity Registrant Name | Ecomat Inc. | |
| Document Type | 10-Q | |
| Document Period End Date | Dec. 31, 2018 | |
| Trading Symbol | ecmt | |
| Amendment Flag | false | |
| Entity Central Index Key | 1,008,653 | |
| Current Fiscal Year End Date | --06-30 | |
| Entity Common Stock, Shares Outstanding | 16,836,750 | |
| Entity Public Float | $ 144,270 | |
| Entity Filer Category | Smaller Reporting Company | |
| Entity Current Reporting Status | Yes | |
| Entity Voluntary Filers | No | |
| Entity Well-known Seasoned Issuer | No | |
| Document Fiscal Year Focus | 2,019 | |
| Document Fiscal Period Focus | Q2 |
| ECOMAT, INC. - BALANCE SHEETS | Dec. 31, 2018USD ($) | Jun. 30, 2018USD ($) | |
| Current assets: | |||
| Cash | $ 0 | $ 0 | |
| Total current assets | 0 | 0 | |
| Total Assets | 0 | 0 | |
| Current Liabilities: | |||
| Accounts payable - trade | $ 1,000 | $ 0 | |
| Advances from - related party | 16,731 | 12,502 | |
| Accrued compensation - related party | 15,000 | 60,000 | |
| Accrued interest - related party | 7,869 | 3,926 | |
| Convertible note | $ 125,000 | $ 50,000 | |
| Total current liabilities | 165,600 | 126,428 | |
| Total liabilities | 165,600 | 126,428 | |
| Stockholders' deficit | |||
| Preferred stock | [1] | ||
| Common stock | [2] | 1,684 | 1,684 |
| Additional paid in capital | 3,791 | 3,791 | |
| Accumulated deficit | (171,075) | (131,903) | |
| Total Stockholders' deficit | (165,600) | (126,428) | |
| Total Liabilities and Stockholders' Deficit | $ 0 | $ 0 | |
| [1] | $0.0001 par value; 10,000,000 shares authorized; none issued | ||
| [2] | $0.0001 par value; 100,000,000 shares authorized; 16836750 issued and outstanding at December 31, 2018 and June 30, 2018. | ||
| ECOMAT, INC. - STATEMENTS OF OPERATIONS - USD ($) | 3 Months Ended | 6 Months Ended | ||
| Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | |
| Statements of Operations | ||||
| Revenue | $ 0 | $ 0 | $ 0 | $ 0 |
| Costs and expenses: | ||||
| General and administrative | 17,730 | 29,550 | 35,230 | 59,449 |
| Total costs and expenses | 17,730 | 29,550 | 35,230 | 59,449 |
| Other income and expenses | ||||
| Interest expense | 2,646 | 153 | 3,942 | 423 |
| Total other expenses | 2,646 | 153 | 3,942 | 423 |
| Net loss | $ (20,376) | $ (29,703) | $ (39,172) | $ (59,872) |
| Basic and diluted per share amounts: | ||||
| Basic and diluted net income (loss) | $ 0 | $ 0 | $ 0 | $ 0 |
| Weighted average shares outstanding | ||||
| Basic and diluted | 16,836,750 | 16,836,750 | 16,836,750 | 16,836,750 |
| ECOMAT, INC. - STATEMENTS OF CASH FLOWS | 3 Months Ended | |
| Sep. 30, 2018USD ($) | Sep. 30, 2017USD ($) | |
| Cash flows from operating activities: | ||
| Net loss | (39,172) | (59,872) |
| Changes in operating assets and liablities: | ||
| Accounts payable | 1,000 | |
| Increase (decrease) in accounts payable and accrued liabilities | $ 34,943 | $ 31,373 |
| Cash flows used by operating activities | (3,229) | (28,499) |
| Cash flows from investing activities: | ||
| Cash used in investing activities | $ 0 | $ 0 |
| Cash flows from financing activities: | ||
| Advances from related party | 3,499 | 3,499 |
| Convertible note borrowings | 25,000 | 25,000 |
| Cash provided by financing activities | $ 28,499 | $ 28,499 |
| Change in cash | 0 | 0 |
| Cash - beginning of period | 0 | 0 |
| Cash - end of period | $ 0 | $ 0 |
| Non-cash investing and financing activities: | ||
| Accrued compensation settled with convertible note payable | 75,000 | |
