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Liquidity ratios answer one urgent question: can this business pay its bills over the next twelve months? This calculator computes the two classic liquidity measures — the current ratio and the quick ratio — from three balance-sheet inputs, then gives you a plain-English verdict on short-term financial health. Follow the steps below.
The verdict grades your position at a glance: strong ratios mean bills are comfortably covered, while ratios below 1.0 warn that short-term obligations exceed short-term resources. Try entering your own company's balance-sheet figures — or a competitor's, from their published accounts — to see how the verdict changes.
Liquidity is a company's ability to meet its short-term obligations — the bills, wages, loan payments, and supplier invoices coming due within the next twelve months — using assets that can be converted to cash in that same window. A business can be profitable on paper yet fail if it cannot pay next month's payroll: that is a liquidity crisis, and liquidity ratios are the early-warning system.
Current assets are resources expected to become cash within one year: cash and cash equivalents, marketable securities, accounts receivable (money customers owe you), inventory (goods awaiting sale), and prepaid expenses. Current liabilities are obligations due within one year: accounts payable (money you owe suppliers), short-term loans, the current portion of long-term debt, accrued wages, and taxes payable. Both come straight from the balance sheet, which is why these ratios are sometimes called balance-sheet ratios.
The current ratio — current assets divided by current liabilities — is the broadest liquidity test. A ratio of 2.00 means the company holds $2.00 of short-term assets for every $1.00 of short-term obligations. The traditional rule of thumb calls 2.0 healthy and 1.0 the danger line: below 1.0, the company technically cannot cover its coming bills even by liquidating everything short-term it owns.
The quick ratio, also called the acid-test ratio, is the stricter sibling: it removes inventory from current assets before dividing by current liabilities. The logic is that inventory — raw materials, half-finished goods, unsold stock — may take months to sell and convert to cash, and in a crisis it might sell only at a deep discount. Creditors therefore often ask: "Can you pay us without selling a single widget?" A quick ratio of 1.0 or higher answers yes.
Working capital — current assets minus current liabilities — is the dollar-denominated cousin of these ratios. With $500,000 of current assets and $250,000 of current liabilities, working capital is $250,000: the cash-like buffer available to fund day-to-day operations. Ratios and working capital tell the same story in different units; analysts watch both.
Lenders scrutinize liquidity ratios before extending credit, suppliers check them before offering payment terms, investors use them to gauge bankruptcy risk, and managers track them to decide whether the company can afford expansion, dividends, or buybacks. Because the inputs come from audited financial statements, the ratios are hard to manipulate cosmetically — though, as the mistakes section below explains, they can still mislead if read naively.
The two formulas are simple divisions:
Current ratio = Current assets ÷ Current liabilities
Quick ratio = (Current assets − Inventory) ÷ Current liabilities
Interpretation bands used by most analysts:
Worked example 1 — strong position. A distributor reports current assets of $500,000 (including $150,000 of inventory) and current liabilities of $250,000. Current ratio = $500,000 ÷ $250,000 = 2.00. Quick ratio = ($500,000 − $150,000) ÷ $250,000 = $350,000 ÷ $250,000 = 1.40. Working capital = $500,000 − $250,000 = $250,000. Both ratios sit in the strong zone: the company covers its short-term bills twice over, and even ignoring inventory it still covers them 1.4 times. This is the calculator's default example.
Worked example 2 — weak position. A startup reports current assets of $120,000 (including $70,000 of inventory) and current liabilities of $100,000. Current ratio = $120,000 ÷ $100,000 = 1.20. Quick ratio = ($120,000 − $70,000) ÷ $100,000 = $50,000 ÷ $100,000 = 0.50. Working capital = $120,000 − $100,000 = $20,000. The current ratio looks merely thin, but the quick ratio exposes the real problem: strip out the inventory and the company can cover only half its coming bills. More than half its "liquidity" is stock sitting on shelves.
The cash ratio — the strictest test. Some analysts go further and count only cash and cash equivalents: Cash ratio = (Cash + Cash equivalents) ÷ Current liabilities. If the distributor above holds $80,000 in cash, its cash ratio is $80,000 ÷ $250,000 = 0.32 — it can cover 32% of short-term obligations from cash alone, without collecting a single receivable. The three ratios form a ladder of strictness: current (2.00) → quick (1.40) → cash (0.32).
The table below summarizes the two worked examples side by side:
| Measure | Example 1: Distributor | Example 2: Startup |
|---|---|---|
| Current assets | $500,000 | $120,000 |
| Inventory | $150,000 | $70,000 |
| Current liabilities | $250,000 | $100,000 |
| Current ratio | 2.00 | 1.20 |
| Quick ratio | 1.40 | 0.50 |
| Working capital | $250,000 | $20,000 |
| Verdict | Strong | Weak |
Brightline Components, a small manufacturer, applies for a $400,000 line of credit to buy raw materials for a big order. The bank pulls its balance sheet: current assets of $1,200,000 (including $300,000 of inventory) and current liabilities of $600,000.
The loan officer computes: current ratio = $1,200,000 ÷ $600,000 = 2.00; quick ratio = ($1,200,000 − $300,000) ÷ $600,000 = $900,000 ÷ $600,000 = 1.50; working capital = $600,000. Both ratios clear the bank's minimums (typically 1.25 current and 1.0 quick for manufacturers), and the quick ratio shows the company is not dependent on selling inventory to service debt.
But the officer digs one level deeper, because ratios are a starting point, not a verdict. She checks the trend: last year the current ratio was 2.40 and the quick ratio 1.80 — both have slipped as the company stocked up for the big order. She checks receivables quality: $500,000 of the current assets are receivables, and one customer owes $180,000 past 90 days. The ratios say "approve"; the trend and the aging receivables say "approve, but monitor." The bank extends the credit line with quarterly ratio covenants — a textbook example of liquidity ratios opening the door while deeper analysis sets the terms.
Corner Mart, a regional grocery chain, shows current assets of $800,000 — but $560,000 of that is perishable inventory — against current liabilities of $320,000.
Current ratio = $800,000 ÷ $320,000 = 2.50 — a number that looks excellent in isolation. Quick ratio = ($800,000 − $560,000) ÷ $320,000 = $240,000 ÷ $320,000 = 0.75 — below the 1.0 comfort line. The two ratios tell opposite stories, and the quick ratio is the honest one here: 70% of the company's "liquid" assets are groceries on shelves that must be sold within days or written off.
An investor comparing Corner Mart to a software company with the same 2.50 current ratio would be making a category error. The software company's current assets are mostly cash and receivables (quick ratio perhaps 2.30); the grocer's are mostly perishables (quick ratio 0.75). Same headline ratio, completely different risk. This is why analysts never compare liquidity ratios across industries — supermarkets routinely run current ratios near 1.0 because inventory turns over weekly, while manufacturers are expected to hold 1.5 or better. Context is everything: compare each company to its own history and its industry peers, never to a universal number.
1. Reading a single quarter in isolation. Liquidity is seasonal: retailers bulge with inventory before the holidays, manufacturers build stock before peak season. A current ratio of 1.30 in December might be 2.10 by March. Always look at the trend across at least four quarters before judging — a declining ratio over three straight quarters is a far louder warning than any single number.
2. Comparing across industries. A supermarket's 1.1 current ratio can be perfectly healthy (inventory sells in days), while a heavy manufacturer's 1.1 can signal distress (inventory sits for months). Benchmark against companies with similar business models and inventory cycles, not against a magic number from a textbook.
3. Trusting stale balance-sheet figures. Ratios use a snapshot — usually quarter-end — but cash positions swing daily. A company can "window dress" by delaying supplier payments until after quarter-end, temporarily inflating the current ratio by, say, $50,000 of payables shifted into next quarter. Lenders counter this by averaging several periods or requesting monthly management accounts.
4. Assuming all inventory is equal. The quick ratio excludes inventory entirely, but the current ratio counts every dollar of it at book value — including obsolete, damaged, or slow-moving stock that may never convert to cash at anything near its carrying value. If $70,000 of a startup's $120,000 inventory is last year's unsold model, the 1.20 current ratio is fiction. Footnotes on inventory write-downs deserve as much attention as the ratio itself.
5. Confusing liquidity with solvency or profitability. Liquidity measures survival over the next twelve months; solvency measures survival over the long term (total debt versus total assets); profitability measures whether the business model works at all. A company can be profitable and insolvent, liquid and unprofitable, or — like many fast-growing startups — profitable on paper with a 0.50 quick ratio and a looming cash crunch. Use liquidity ratios for what they measure: short-term staying power, nothing more.
Liquidity is one lens on financial health — keep analyzing with our Financial Calculators collection, with more than 80 free tools covering loans, mortgages, investments, retirement planning, and everyday money math. Model the cost of the credit line your ratios just helped you qualify for, project the investment returns on the working capital cushion you measured, or stress-test budgets and savings plans against the short-term obligations you just tallied.
This page provides a liquidity ratios calculator computing the current ratio and quick (acid-test) ratio. Inputs: current assets ($), inventory ($), current liabilities ($). Formulas: current ratio = current assets ÷ current liabilities; quick ratio = (current assets − inventory) ÷ current liabilities. Reference values: $500,000 assets, $150,000 inventory, $250,000 liabilities → current ratio 2.00, quick ratio 1.40, verdict Strong. Interpretation bands: current ≥ 2.0 strong, 1.5–2.0 healthy, 1.0–1.5 watch, below 1.0 weak; quick ≥ 1.0 healthy, below 1.0 caution. Companion metric: working capital = current assets − current liabilities; cash ratio = (cash + equivalents) ÷ current liabilities. Ratios use balance-sheet book values; compare within industries and across time, not as single absolute numbers. Related resources: Financial Calculators index (https://sigmacalculator.net/financial-calculators/).
Generally 1.5 to 2.0 or higher. At 2.00 the business holds twice the short-term assets it needs for its coming bills. Below 1.0 is a warning sign - obligations exceed short-term resources.
Inventory is the hardest current asset to convert to cash quickly - it may take months to sell, or sell only at a discount in a crisis. The quick ratio tests whether bills can be paid without selling any inventory.
Yes. A current ratio far above 2.0 can mean cash is sitting idle instead of being invested or returned to owners. Benchmark against industry peers - supermarkets run fine near 1.0 while manufacturers target 1.5 or better.
Sources: standard financial-ratio formulas applied to balance-sheet book values; interpretation bands reflect conventional analyst guidance (current ratio >= 2.0 strong, quick ratio >= 1.0 healthy).