Free Online Calculators
Every calculator on this page runs in your own browser tab. Enter a salary, a debt or an interest rate and the arithmetic happens on your device — the page is a static file, the formula is JavaScript, and no request carries your numbers anywhere. You can verify that in the Network tab, or turn off your Wi-Fi and keep calculating.
- 01Savings Goal CalculatorMonthly saving to reach a goal.
- 02Debt Payoff CalculatorWhen you'll be debt-free, interest saved.
- 03ROI CalculatorTotal ROI, profit and annualised rate.
- 04Simple Interest CalculatorInterest and total, I = P × r × t.
- 05Compound Interest CalculatorGrowth with monthly contributions, year by year.
- 06Salary to Hourly CalculatorAnnual salary and hourly wage, both directions.
- 07Percentage CalculatorX% of Y, percentage change, discounts.
- 08Age CalculatorExact age, or days between two dates.
- 09Loan Calculator (EMI)Payment, total interest, full amortization.
- 10Mortgage CalculatorMonthly payment and lifetime interest.
- 11Tip CalculatorTip, total and each person's share.
- 12Discount CalculatorSale price, % off and stacked deals.
- 13Sales Tax CalculatorAdd or remove sales tax, 50-state rates.
- 14Fuel Cost CalculatorTrip fuel and cost, metric or imperial.
- 15Time CalculatorDuration between times, or add/subtract.
- 16Freelance Rate CalculatorThe hourly rate you actually need to charge.
- 17Markup, Margin & VAT CalculatorCost to price, markup to margin, VAT either way.
- 18UCAS Points CalculatorTariff points from your grades, 2026 official tables.
- 19Exam Grade CalculatorWeighted average so far, and what the final paper needs.
- 20Etsy Fee CalculatorEvery Etsy fee itemized, and your real net payout.
- 21eBay Fee CalculatorUS and UK eBay fees itemized, business and private.
- 22Vinted Fee CalculatorWhat sellers keep and what buyers really pay.
- 23Depop Fee CalculatorDepop's real fees after the 2024 shake-up, itemized.
- 24GST Calculator (India)The current 5/18/40 slabs with the CGST–SGST split.
- 25CGPA to Percentage CalculatorNamed university formulas, each with its source.
- 26Income Tax Calculator (Bangladesh)FY 2025–26 slabs as amended by the Finance Act 2026.
- 27Gratuity Calculator (UAE)End-of-service under the current law — no resignation cut.
- 28Tax Calculator (Philippines)Take-home pay on the 2026 SSS, PhilHealth & BIR rates.
- 2913th Month Pay CalculatorProrated 13th-month pay and the ₱90,000 tax rule.
- 30SSS Contribution CalculatorThe 2026 SSS table: employee, employer, MPF and EC.
The borrowing tools do more than return a single payment figure. The Loan Calculator (EMI) computes your monthly payment and total interest, then builds the full amortization schedule — on a 30-year loan, 360 payments, each split between interest and principal, showing how slowly the balance falls in the early years. The Mortgage Calculator is the pointed version of the same arithmetic: monthly payment and lifetime interest, the figure that makes two rate offers directly comparable. On the saving side, the Compound Interest Calculator projects growth year by year with monthly contributions, so you can see what a regular deposit does over a decade instead of guessing.
The pricing tools are for people who bill for their time or sell things. The Freelance Rate Calculator works out the hourly rate you actually need to charge, which is not the same number as an annual salary divided by working hours. The Salary to Hourly Calculator handles the plainer version of that conversion, turning an annual salary into an hourly wage and back — the calculation you need when weighing a contract offer against a salaried one. The Markup, Margin & VAT Calculator turns cost into price, translates markup into margin — two numbers that are routinely confused — and adds or removes VAT in either direction.
The numbers you type into these pages are salaries, debts and rates — exactly the figures most people would rather keep to themselves. Here is why they stay put: each calculator is a static page served from a CDN, and the formula behind it is JavaScript that runs inside your tab. There is no server-side step, no account and no sign-up, and none of the calculators on this page makes any network request after it loads. You do not have to take that on trust. Open your browser's developer tools, switch to the Network tab, and run a calculation: the page and its assets load, and then nothing further. The stronger test is to load the page, turn off your Wi-Fi, and keep working — everything the calculator needs arrived with the page.